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1. OM SM HY 12GF CE HY 24GF CE Access Door for Pilot Switch Manual Gas Valve and Gas Reset Switch Access Door for Pilot Switch Manual Gas Valve and Gas Reset Switch 1 ELECTRICAL 13mm CONDUIT FITTING 3 DRAIN CONNECTION 50mm DIAMETER HOSE 2 COLD WATER SUPPLY 3 4 BSPT 4 GAS CONNECTION 3 4 BSPT 1 2 For multiple installations the requirements for Required Ventilation Rate individual appliances should be added together See table page 5 Installation must comply withlocal Units Type Range 7 60 and or national regulations and a competent installer Pastry Oven must be employed Recommendations for ventilation for catering appliances are given in BS Fryer 90 Electrical Supply Connection Sissi 26 The unit is designed for connection to fixed wiring A Steamer 17 600 suitably rated isolating switch with contact separation ER of at least 3 mm on both poles must be fitted to the Sterilizing Sink installation Wiring must be executed in accordance with the regulations listed in this manual Tea Coffee Machine 8 5 14 300 500 OM SM HY 12GF CE amp HY 24GF CE Cable entry is at the top rear right side of the appliance for model HY 12GF CE There are two cable entries on model HY 24GF CE at the rear right side of each cavity Access is gained as described in the Operator and Service Manuals for this appliance from the gas valve le
2. OE vb ee e EU berba sre Peat dert 36 ELECTRICAL SCHEMATIC iae es eee Pen Pec tone unun Ea cena 37 TROUBLESHOOTING CHARTS 2 GE Robots 38 4 OPERATOR MANUAL lt 2 2i deba 44 EQUIPMENT DESCRIPTION oet gta aetas ol rato mat wi oa tg eon 44 WATER CONDITIONING Ca uper m ne ri Ete e e mete meri 44 STARUP isses d echo dose ot ie fen 46 OPERATION S based ld dlc I dogm Id dos Ed 48 CLEANING 90 58 d APPS ILLE UM ILE 49 MAINTENANGE 5idemetuepebebeterebepepebedbm E DECEM CUIU PM ETE 51 SERVICE LOG lt RE QU EI RADO HE wapus Casa anc Ob da Rd 52 WARRANTY dodge d ido beo 53 OM SM HY 12GF CE amp HY 24GF CE 1 Installation Assembly and Commissioning CAUTION IT IS MOST IMPORTANT THAT THESE INSTRUCTIONS AND THE OPERATOR AND SERVICE MANUALS BE CONSULTED BEFORE INSTALLING AND COMMISSIONING THE APPLIANCE FAILURE TO COMPLY WITH SPECIFIED PROCEDURES MAY RESULT IN DAMAGE OR THE NEED FOR A SERVICE CALL These appliances have been CE marked on the basis of compliance with the gas appliance directive EMC and low voltage directive for the countries gas types and pressures as stated on the data plate These appliances must be installed by a competent person in conformity with the installation
3. 2 Servicing and Conversion CAUTION BEFORE ATTEMPTING ANY SERVICING ENSURE THAT THE ISOLATING COCK IS TURNED OFF AND CANNOT BE INADVERTENTLY TURNED ON CHECK THAT THE ELECTRICITY SUPPLY IS DISCONNECTED AFTER ANY MAINTENANCE TASK CHECK THE APPLIANCE TO ENSURE THAT IT PERFORMS CORRECTLY AND CARRY OUT ANY NEEDED ADJUSTMENTS AS DETAILED IN SECTION 1 AFTER CARRYING OUT ANY SERVICING OR EXCHANGE OF GAS CARRYING COMPONENTS ALWAYS CHECK FOR GAS SOUNDNESS Conversion To change from natural gas to propane gas or vice versa change the following Burner injectors high fire orifices Rimner Tube Injector low fire orifice Pilot orifice Pressure setting Data Plate The governor spring does not need to be changed only the pressure setting After Servicing 1 Test for gas soundness as specified in IGE UP1 as appropriate after any gas connection has been disturbed 2 Check for correct operation see Commissioning of Appliance 2 1 Assembly Disassembly Procedures GENERAL INFORMATION The procedures which follow are based on having full access to the steamer on all four sides If the steamer is installed between other appliances and there is not enough room on the sides for access it must be puled out from its position Exercise care when moving the steamer to avoid stress or pull on electrical water and gas connections 2 1 1 Right Side Panel Louvered Removal P N 123196 1 With a flat blade screwdriver remove
4. Open the door and slide the pans onto the supports If you will only be steaming one pan put it in the middle position for the set time and then turn it off A red light will come on and a beeper will sound Steam production stops f you want to steam continuously turn the timer to the manual ON position A green light will come on The unit will continue steaming until you stop it by turning the timer to OFF When steaming continuously YOU MUST CONTROL STEAMING TIME CONTACT WARNING WHEN YOU OPEN THE DOOR STAY AWAY FROM THE STEAM COMING OUT OF THE UNIT THE STEAM CAN CAUSE BURNS 5 Open the door Remove the pans from the steamer using hot pads or oven mitts to protect your hands from the hot pans 6 shut down the unit press the ON switch pad to OFF The steam generator will automatically drain Gas Lockout Indicator and Reset Control Should the pilot fail to ignite during start up and indicator on the control panel see below will light and the supply of gas to the unit will be halted When this happens the ignition process may not be started again for five minutes After that time press the Lockout Reset switch located behind the front panel and try to start the unit again If the lockout continues to occur after three attempts contact your Groen Service Agency for assistance STEAMER TIMER READY INDICATOR NEON CLEANING INDICATOR NEON HIGH TEMP INDICATOR NEON GAS LOCK
5. 3 The pilot burner ignite Electrical feedback to the control board confirms that the pilot burner is lit 4 The Green neon on the switch actuator illuminates showing that the gas pilot burner is lit 3 1 2 Cooking Food To use the steamer press the ON OFF touch pad for the cavity being used Water enters the steam generator to the fill point With the cavity door closed the low heat and high heat gas valves then open heating the water to a boil When the cavity is heated to 85 C 185 F the READY neon comes on The unit switches to low power reducing the steam but maintaining the boil The READY neon shows that cooking can start When food is to be cooked in either or both of the cavities slide in the pans and close the door Rotate the timer control knob around the dial to the desired time from 1 to 60 minutes or place it in the position In the timed position a red neon on the panel will come on when cooking time is completed and a beeper will sound In the manual position a green neon on the right side of the dial will be on to show that the steamer is operating continuously When the timer is set in a timed position 1 to 60 minutes or in the ON position the motor and fan in the cavity start steam enters the cavity and the steam is distributed throughout the cavity When the timed cooking period is done a beeper sounds and the red neon will stay on until the time knob is turned to the 12 o
6. IMPORTANT INFORMATION KEEP FOR OPERATOR IMPORTANT INFORMATION OPERATOR AND SERVICE MANUAL OM SM HY 12GF CE amp HY 24GF CE Part Number 132465 INTERNATIONAL MODELS HY 12GF CE amp HY 24GF CE HyPerSteam Atmospheric Convection Steamer Self Contained Gas Heated C HY 12GF CE HY 24GF CE CE KEEP THIS MANUAL WITH THE STEAMER DOCUMENTS OPERATORS AND TECHNICIANS SHOULD READ UNDERSTAND AND FOLLOW WARNINGS AND INSTRUCTIONS IN THIS MANUAL THE SERVICE MANUAL AND THE OPERATOR SECTIONS Information contained in this document is known to be current and accurate at the time of printing creation Unified Brands recom 4 mends referencing our product line websites MADE INUSA unifiedbrands net for the most updated product information and specifications OM SM HY 12GF CE amp HY 24GF CE IMPORTANT READ FIRST IMPORTANT IT IS MOST IMPORTANT THAT THESE INSTRUCTIONS AND THE OPERATOR AND SERVICE MANUALS BE CONSULTED BEFORE INSTALLING AND COMMISSIONING THE APPLIANCE FAILURE TO COMPLY WITH SPECIFIED PROCEDURES MAY RESULT IN DAMAGE OR THE NEED FOR A SERVICE CALL THESE APPLIANCES HAVE BEEN CE MARKED ON THE BASIS OF COMPLIANCE WITH THE GAS APPLIANCE DIRECTIVE EMC AND LOW VOLTAGE DIRECTIVE FOR THE COUNTRIES GAS TYPES AND PRESSURES AS STATED ON THE DATA PLATE THESE APPLIANCES MUST BE INSTALLED BY A COMPETENT PERSON IN CONFORMITY WITH THE INSTALLATION AND SERVICI
7. To Install 4 Note that the motor shaft has a flat surface Position the fan hub on the motor shaft so that the 3mm Allen set screw is opposite the flat portion of the motor shaft 5 Slide the fan onto the motor shaft far enough so that the motor shaft is at the end of the fan hub 6 With a 3mm Allen wrench tighten the set screw onto the fan NOTICE Advise customers to clean the fan blades periodically of deposited food grade grease coming from the foods being cooked The deposit of such grease over time could cause the fan to vibrate 2 1 23 Fan Motor Assembly Motor Shaft Seal P N 096740 P N 096868 Motor Insulator Oil Slinger Washer 094135 096831 Shut off electrical power to the steamer From inside the cavity remove fan using a 3mm Allen wrench Using an 11mm nut driver socket remove the four 14 20 nuts which hold the motor Note that one of the nuts secures the motor ground strap to the steamer Pull the printed circuit mounting plate forward to clear the lower two threaded studs securing the motor Remove the motor mounting plate to which the motor is attached To Install a New Motor 6 Make sure the motor insulation board P N 094135 is installed on the four threaded studs to the new cavity wall Apply Never Seez on both sides of the steamer seal and the inside hold Refer to the Fan Motor Assembly Diagram Insert the steamer motor seal in the cutout of the insulator boar
8. and from the gas solenoid valves 12 Using an open ended wrench connect the 9 5 mm aluminum tubing to the inner and lower 3 From the front of the steamer using a Channel steam generator manifold Lock wrench loosen and disconnect the pipe union which connects the assembly to the main 13 Using an open ended wrench connect the 12 7 gas valve mm aluminum tubing from the inner and outer steam generator manifolds 4 From the left side or back of the steamer use an open ended wrench to loosen and disconnect 14 Reconnect the wires to the correct valve the compression fittings which connect the 9 5 mm aluminum tubing from the inner and outer manifolds 2 1 7 Igniter Module P N 122180 5 From the left side or back of the steamer use an open ended wrench to loosen and disconnect 1 Shut off power and gas to the steamer the compression fittings which connect the 9 5 mm aluminum tubing from the inner and outer 2 Remove the cover to the electrical compartment manifolds 6 The entire assembly of both regulators and the lt 1 y IGNITER MODULE GAS PILOT GAS SOLENOID VALVE SWITCH VALVE 12 The igniter module is located next to the motor Note or tag the wires for reinstallation before unplugging Carefully disconnect the seven push terminals from the igniter module be careful not to pull the terminal by the wire Use needle nose plers to grip onto the terminal itself Use a nut driver preferably w
9. cut the hose Follow this procedure for the other steam hose and the cleaning hose Install the back panel Fasten the igniter spark cable to the pilot light porcelain heat sensor Install the aluminum tubing from the high and low heat gas manifold to the respective solenoid valves using open ended wrenches Install the flame runner tube using an open ended wrench 2 1 17 High Limit Thermostat P N 096892 1 As viewed from the front of the steamer the high limit thermostat is located on the right side of the outer steam generator and the left side of the inner steam generator 2 Shutoff power to the steamer 3 Allow water to drain from steam generator s 4 remove the thermostat first unplug the two wire plugs which lead to the thermostat 5 Holding the insulation foil with your hand use a 22mm open ended wrench to remove the thermostat from the steam generator To Install 6 Apply pipe thread compound to the thermostat and screw it into the steam generator 7 Using a 22mm open ended wrench tighten the thermostat and replace the two wire terminals To Check 8 Operate steamer and observe if there are any leaks coming from the new thermostat 2 1 18 Steam Generator Probes High and Low Water P N 070178 NOTE There are two probes for each steam generator 1 Shutoff power to the steamer 17 OM SM HY 12GF CE amp HY 24GF CE 2 With an 8mm nut driver LOOSEN but do not remove the nuts holding the w
10. in closed position Check switch 36 OM SM HY 12GF CE HY 24GF CE 3 4 8 Problem Fan Motor Does Not Operate PROBABLE CAUSES CORRECTIVE ACTION Door may be open Close steamer door Steamer not ready Check steam generator ready thermostat for open circuit Refer to previous problems Timer in off position Check timer position Door switch may be open circuit Test door switch with meter with door closed Check magnet position in door Check that switch is plugged into harness especially if door was reversed If switch remains open replace switch Door magnet missing or in wrong position Check for proper position of magnet in door Motor connector loose Check connector on circuit board Motor voltage plug missing or incorrect position Check circuit board for plug connection Motor mounting plate distorted Inspect bracket to make sure there are no distortions which would prevent motor from turning freely Motor operational problem Check motor seals for wear or misalignment Check motor windings continuity Motor thermal protective switch open Disconnect steamer from branch circuit and let motor cool Disconnect wires from motor harness and check continuity between thermal switch terminals Replace motor if reading between white and yellow wires is open Fan Motor relay contacts and coils Check motor relay contacts K3 or K6 to make sure they are closed when relay K3 or K6 is energized Replace control board If necessary 3
11. 12GF CE amp HY 24GF CE 50 mm 1 0 HOSE 50 mm 0 D STAINLESS STEEL ELBOW 50 mm CLAMP 3 REQ HOSE CUT SO THAT AIR GAP IS MAINTAINED AT LOWER END AIR E FLOOR DRAIN GAP Drain Connection with Drain Box position This valve is located behind an access panel on the right side of the unit 4 Turn on electrical service to the unit The unit will not operate without electrical power Do not try to operate the unit during a power failure 5 The steamer will not operate until the pilot burner has been ignited To light the pilot burner activate the pilot switch next to the main gas valve See photo below When the ignition sequence is successful a green light on the electrical panel will glow GAS VALVE OM SM HY 12GF CE amp HY 24GF CE 6 The trial for ignition period is roughly 90 seconds If the pilot burner does not light within 90 seconds the system automatically stops gas flow to the pilot burner and lights the Lockout neon on the front control panel If this happens turn off the pilot switch push the Gas Reset switch and repeat the trial for ignition During the first start up the pilot may require several trials for ignition to bleed air from the piping Subsequent start ups should only need about five seconds to achieve pilot ignition NOTE See Automatic Pilot Operation at the end of this section 7 Sues the pilot ame hasbeen MAIN GAS HIGH
12. 2 and then remove the switch as described above Door Reversing Procedures Turn off steamer power and allow steamer to cool 21 OM SM HY 12GF CE amp HY 24GF CE 2 2 1 31 To remove door support the door while removing hinge to steamer bolts Place door with hinge on a flat clean table or similar support with the gasket facing up Be careful not to scratch the door surface Note and record the distance between the jam nut and end of door locking pin bullet This information will be needed during bullet installation in Step 6 Loosen jam nut with a 13mm wrench and remove the door locking pin and jam nut Coat locking pin threads with Never Seez high temperature 1000 C anti seize and lubricating compound Install door locking pin and jam nut directly across the steamer cavity from the other bullet location Install these two items so that jam nut to end of bullet distance is the same as that measured in Step 4 Remove the two 14 20 truss head screws from above and below the old bullet location and install them above and below the new bullet location Remove the screws and U channel from the door Take the magnet and block assembly from its present location and place it at the opposite end of the door channel with magnet facing outward from the door Door Gasket P N 106209 Turn off steamer and allow to cool Remove the door using one of the following two methods a Support door weight and r
13. 4 9 Problem Fan Motor Vibrates Excessively WARNING BE SURE OVEN IS DISCONNECTED FROM BRANCH CIRCUIT POWER BEFORE PERFORMING ANY SERVICE WORK Food on fan blades Clean fan blades Tighten motor mounting hardware Tighten and or install missing nuts 3 4 10 Problem Indicator Lights Malfunctioning No electricity to steamer when ON switch Check electrical supply connections Check building fuses or circuit pressed breakers Clean light comes on after four minutes Check water supply hose for kinks and that it is connected Clean water screen filter on inlet valve De lime the steamer 3 4 11 Problem Steam Generator Does Not Operate Properly Steam Generator not filling Turn unit ON Connect electrical supply No steam Connect water supply Check for low water pressure De lime the steamer Close steamer door s Excessive steam escaping from rear of unit Straighten unclog hose Check spray solenoid and nozzle 37 OM SM HY 12GF CE amp HY 24GF CE 4 Equipment Description Your Groen HY 12GF CE HyCapacity HyPerSteam is designed to give years of service It consists of a stainless steel cavity cooking chamber which is served by an electrically heated atmospheric steam generator The HY 24GF CE has two cavities and two generators Two powerful blowers circulate the steam in each cavity to increase heating efficiency A dual position pan rack on the left side of the cavity can be quickly changed to allow f
14. Check gas supply Gas manifold burners do not ignite Check replace low high fire gas solenoids Check connections and solenoid operation 3 4 5 Problem Boiler Overfills Water level probe circuit Probe encrusted with lime Clean probes Check connections to probes for open circuit Water inlet valve not closing Check inlet valve for debris in diaphragm which would keep valve Valve is normally closed open Replace if necessary Water board not grounded properly Perform continuity check and restore ground to water level control board Water board Replace water level control board 3 4 6 Problem Water Leaks Leaks around water inlet valve Check tighten hose clamps Defective gasket in hose connection Replace gasket Cracked water inlet valve housing Replace water inlet valve Leaks around heating elements and steam Replace gasket tighten fittings Check for loose nuts generator inlet fittings Leaks at drain box Check tighten hose clamps Leaks at drain box overflow Check clear blockage in drain 3 4 7 Problem Improper Condensate Spray Operation No condensate spray Steam coming out vent Check for defective spray water valve Replace as required Too much condensate spray Excessive water coming out of drain Check incoming water line pressure Correct pressure if necessary Defective or missing spray nozzle or orifice Continuous condensate spray Solenoid stuck in open position Check solenoid Door switch stuck
15. SWITCH 2 ae Ren IGNITER PILOT EEN SWITCH TERMINAL CON x 32 RED BLOCK TB1 2 MVPV TR B IGN RESET CO BLACK SWITCH 5 J6 pv GBEENAELLOM 2 ACHI Ze n GREENYELLOW X 1 BLUE ACLO MV TH TOPILOT x 477 SPRK Brack P7B 1 4 AUTO TEST 8 GREENYELLOW oko CIRCUIT sw 7 4 7 BREAKER S O i 1 WHITE HIGH POWER 1 1 2 BROWN s lt lt J STEAMERSELECT TEA 2 YELLOW HIGH POWER 2 1 A8V 2 BROWN TS 14 ORANGE 14 B PILOT s 449004 s BLACK 3 RED _ LOW POWER KM AN GAS VALVE CUTOUT 12 12 11 RED 11 4 BLACK _ 24VAC OUT SWITCHED ac CEH HSH TRANSFORMER HIGH PROBE 10 10 TAA URAD LOW PROBE 9 BHACK 3 5 RED FILLVALVE AFILL wv RED aco gt H H E BLACK d n 1 GREEN 1 6 BLUE EDUCTORVALVE wWvs EDUCTOR wye MA S 8 5 mira 2 T 7 GREEN CONDENSATE VALVE ue 1 6 1 3 FED N 8 BLACK 24 OUTSWITCHED 10 yee 8 GREEN YELLOW 13 1 1 9 BLACK gt OVERTEMPIN 12VDC K1 uiia ER L 40 DRAIN OUT DC Dv CUT 24 11 RED DRAIN OUT DC BROWN 24VAC HI mx 42 RED 24VA C CONTROL RELAY s SE 230 ot STEANER SELECT TABLE 49 BLACK _ DRAININ24VAC UNSWITCHED COIL SEM HY 12G CE ON ON 14 ORANGE
16. aluminum foil insulation blanket to gain access to the nuts which hold the port to the steamer Fold up aluminum foil insulation blanket to expose the two 1 4 20 keps nuts which hold the steam port to the threaded studs on the cavity wall With an 11mm nut driver remove the two kep nuts Remove the steam port from the threaded studs To Install 8 10 11 12 2 1 27 Put a small bead of silicone sealant in and around the groove in the steam port to seal any possible leaks or use gasket P N 099250 Install the steam port on threaded studs Secure with two keps nuts Fold down the aluminum foil insulation blanket to its original position and repair cuts with aluminum duct tape Reinstall the thermostat as described above Reinstall the steam hose to the steam port Slide the hose clamp up into position not more that 12mm from the end of hose and tighten Do not over tighten the clamp as it may cut the hose Cavity Steam Hose Assemblies P N 106578 P N 106579 Shut off power to the steamer 2 Remove the cavity side and lower side back panels of the table 3 In upper portion of the steamer using an 8mm nut driver loosen the hose clamp where the hose is attached to the steam port Turn and pull the hose to remove it from the hose nipple 4 n the lower section of the steamer using an 8mm nut driver loosen the hose clamp where it is connected to the steam generator Turn and pull the hose to re
17. circuit breaker continues to trip Gas supply turned off Pilot burner not ignited OM SM HY 12GF CE amp HY 24GF CE CORRECTIVE ACTION Make sure disconnect device is turned on If necessary reset circuit breaker or if fuse has blown ask customer to make arrangements to replace the fuse Check for cause of blown fuse example shorted heating element Refer to schematic and wiring diagrams and check for correct power connection If needed notify the customer that an electrician is required to correct the problem Check transformer voltage on primary and secondary sides Turn off power and check continuity with wires disconnected Check for continuity to ground on all primary and secondary terminals with wires disconnected Refer to schematic diagram and perform continuity check for electrical short circuits Turn on gas supply Perform the following trial ignition and look and listen for spark Attempt to ignite the pilot burner If this burner does not ignite within 90 seconds after the switch is turned on the gas reset switch will lock out Wait at least five minutes before attempting to reactivate the pilot and gas reset switches Repeat the trial for ignition The pilot may require several trials for ignition to bleed air from the gas piping After the initial installation subsequent startups should require only about two to five seconds to get pilot ignition Check 24VAC supply at igniter module terminals MV PV a
18. food for a certain length of time set the timer for that period The timer will automatically run the steamer The control panel on new models has the following touch pads and indicator lights The ON OFF touch pad gets the HyPerSteam ready for use or shuts it off e The READY indicator light shows that the steam generator is at standby temperature and the cavity is hot enough to begin steaming The CLEANING indicator light is lit when the unit is operating in the cleaning mode The SERVICE indicator light shows when the water level probes have stopped working and need to be cleaned normally an indication of lime deposits When one probe is not working the SERVICE light flashes briefly every few seconds If both probes fail the light flashes continuously and the beeper will sound The HI TEMP indicator light comes on when the steam generator is too hot The unit will automatically shut off and cannot be turned on again until the steam generator cools and the HI TEMP indicator light goes out The TIMING indicator light stays on when the timer is running The CLEAN touch pad is used to start the automatic 30 minute cleaning cycle Operating Procedure Press the ON switch pad for the steamer The steam generator will fill and heat until the READY light comes on About 10 minutes Load food into pans in uniform layers Pans should be filled to about the same levels and should be even on top
19. in place OM SM HY 12GF CE amp HY 24GF CE NOTE The following components and subassemblies are to be found in the upper portion of the steamer 2 1 20 Timer Assembly P N 100983 Timer Fastener Nut P N 101145 1 Remove knob from the timer Under the knob is a hexagonal nut which holds time mechanism to the steamer s front panel Note that there is a FLAT side on the time shaft and that this flat is facing upward 2 From the left side unplug the five terminals wires violet gray black tan and white from the time mechanism and unplug the two black timer motor leads 3 With a 26mm open ended wrench remove the hex nut holding the timer in place The timer may then be removed from the front panel 4 Notice Right below the timer shaft the timer has a small plastic anti rotation tab molded into its case There is a corresponding hole punched in the steamer s sheet metal panel This hole may be seen only when the timer is removed To Install 5 Fit the timer in place ensuring that it is set so that the anti rotation tab on the timer fits into the punched hole in the front panel and that the flat on the time shaft is again facing up This means that when the knob is installed the pointer will be exactly between the two indicators 6 Once the timer is properly positioned tighten the hex nut so that it does not slip or rotate 7 Plug the terminal wires in place see Paragraph 2 above and c
20. microamps control board to the side continually check the Flame Rectification Circuit large orange wire spark electrode 4 Unplug the three terminals on the side of the pilot burner hood and ground connections water level control board Low and High If necessary tighten ground connections Note wire colors and terminal positions and or replace defective component s 5 Remove four nuts holding the board to the 5 Check for moisture around the pilot burner and steamer frame and remove board for corrosion on the electrode and the pilot burner hood If necessary remove moisture with 6 Unplug the multi conductor plug on the opposite dry clean cloth If hood and or electrode are side of the board excessively corroded replace pilot burner assembly To Install 2 1 10 Steam Generator Probes High and Low Plug the multi conductor plug on the bottom of Water P N 070178 the board Make sure the plug is firmly and properly seated NOTE There are two probes for each steam generator 8 Place the water level control board over the 1 Shut off power to the steamer mounting studs and fasten with four nuts 2 With an 8 mm nut driver LOOSEN but do not 9 Plug in the three terminals on the side of the remove the nuts holding the wire s on the probe terminal s 14 board making sure to plug the low wire into the 10 2 1 12 7 8 low terminal the high wire into the high terminal and the C into the
21. shaft seal Drip Shield Motor Harness Ready Door Switch Harness Control Board Extension Switch Rocker Pilot Circuit Board Assembly Capacitor 4 0 uF Probe Water Ignition Module Transformer 75 Amp 24 VAC Transformer 20 VAC Relay 12 VDC Coil Relay 24 VDC Coil Panel Overlay Mylar not shown Reset Switch Pushbutton Tube Manifold 5 16 O D Tube Low Fire Tube Manifold 1 2 O D 25 Part No 101145 119844 119878 125788 087951 119875 106270 070178 122180 106234 119815 119813 119814 123131 122003 106457 106458 106456 Key 38 39 40 41 42 43 44 45 46 47 47 48 49 50 51 52 53 54 Description Manifold Assembly Clamp Double Wire Clamp Hose Reducer Water Flow Boiler Assembly Clamp Constant Pressure Hose Steam Inlet 1 2 dia 5 3 8 Hose Steam Inlet 1 1 2 I D x 13 Hose Steam Inlet 1 1 2 1 0 x 22 Gas Valve Natural Gas Gas Valve Propane Gas Valve Gas Manual 1 2 NPT Valve Gas 25V Motor Fan Bracket High Limit Screw Flat Head Light Indicator Relay Part No 125856 127662 093482 106445 106217 126011 106581 106578 106579 098443 098444 098458 106627 096740 123448 069722 122122 074842 OM SM HY 12GF CE amp HY 24GF CE 2 2 Parts Identification Witt 4 6 4 2 N 77777727777 y 20 24 21 26 OM SM HY 12GF CE amp HY 24GF C
22. significant savings On the HY 12GF 24GF the twin water connections are on the rear of the unit with the treated water intake beneath that for untreated water OM SM HY 12GF CE amp HY 24GF CE Start Up After the HY 12GF CE Steamer has been installed test it to be sure that it is operating correctly 1 Remove all literature and packing materials from the interior and exterior of the unit 2 Make sure the water supply line is open 3 Make sure the gas supply line is open and that the gas shut off valve in the unit is in the OPEN position This valve is located behind an access panel on the right side of the unit 4 Turn on electrical service to the unit The unit will not operate without electrical power Do not try to operate the unit during a power failure 5 The steamer will not operate until the pilot burner has been ignited To light the pilot activate the pilot switch located next to the main gas valve When the pilot ignition sequence has been successful a green light will glow 6 The trial for ignition period is roughly 90 seconds If the pilot burner does not light within 90 seconds of pilot switch activation the ignition system automatically stops gas flow to the pilot burner and the gas lockout neon will be lit Wait five minutes then press the Gas Reset Switch to start During the first start up the pilot may require several trials for ignition to bleed air from the piping Subsequent star
23. terminal 4 Using a 21mm open ended wrench turn the probe counter clockwise to remove Clean or replace water level probes WARNING WHEN STEAMER POWER IS TURNED ON THERE IS HIGH VOLTAGE PRESENT IN THE ELECTRICAL To Install COMPONENTS COMPARTMENT BE SURE THAT 5 Apply high temperature pipe compound to the STEAMER IS DISCONNECTED FROM BRANCH CIRCUIT BEFORE PERFORMING ANY REPAIRS probe and screw it in by hand Using a 21mm open ended wrench tighten the probe into the fitting 1 Turn off steamer power 6 Replace the wire s to the probes by snapping the fork terminals around the terminal post 2 Disconnect the ground green wire from the Using an 8 mm nut driver tighten the terminal igniter module nut 3 Connect a DC micrometer between the igniter NOTE f two probes are to be replaced either replace ground terminal and the disconnected green them one at a time or note the color of the wires wire attached to the probes Do not mix them up WARNING 2 1 11 L Control Board DO NOT ATTEMPT TO LIGHT THE PILOT BURNER WITH A FLAME 1 Shut off electrical power to the steamer 4 Ignite the pilot The micrometer should read 2 Remove the side panel screws and slide panel microamps minimum away from steamer If current reading is correct replace the 3 Remove two kep nuts and star washers securing igniter module see 2 1 7 main control board mounting bracket Lay main If current reading is below
24. the two 10 32 screws on the lower edge of the panel The panel is retained to the steamer by an interlocking guide track on the top edge and three spring like clips at the rear edge 2 Once the screws are removed SLIDE the panel toward the front of the appliance with a lifting 10 motion Do not attempt to pry the panel Once the panel is clear of the rear clips it may be lifted off of the top rack ASSEMBLY TIP When replacing the panel press the rear edge inward so that all three clips are retained by the back flange Make sure that the holes in the panel align with the two tapped holes in the steamer so that replacing the screws will be easy and will not damage the threads 2 1 2 Left Side Cover Removal Left P N 123197 Under normal conditions the left side cover should never have to be removed since there are no operational or replacement parts to be accessed The single exception occurs when the door has been reversed so that the handle is on the left and the Door Interlock Switch requires replacement The door switches for both door positions are installed at the factory so there is no need to have access to them if the door is to be reversed 1 Ifthe left side cover is to be removed because of a faulty door switch remove the right side panel first Using a 7mm nut driver and the flat blade screwdriver remove the retaining clip and the two screws on the lower edge of the left side cover The assembly may then b
25. to the steamer Remove the water supply hose connection on the rear of the steamer Remove the two screws on the right side of the water inlet panel Pull the water inlet valve mounting plate away from the steamer and slide it free Loosen the hose clamp nearest the end of the black hose Pull the hose off from valve nipple OM SM HY 12GF CE amp HY 24GF CE 4 Cut the hose down to the spray nozzle about 7 inch and remove the nozzle 2 1 15 Water Inlet Valve Coil If a solenoid coil in the water inlet valve is defective replace the valve as described in 2 1 3 above 2 1 16 Steam Generator Insulated P N 106583 Steam Generator Assembly P N 106217 1 Shut off the power water and gas supplies to the steamer 2 Remove the right and left side Remove the two screws on each side and slide the panels away from steamer 3 Turn the manual gas shut off valve to its closed position 4 Remove the steam outlet hose from the steam generator Use a nut driver to loosen the hose clamp on the hose Slide it down the hose for later use Remove the hose from the steam generator Repeat this step for the other steam hose and for the cleaning hose 5 Unplug the ignition cable from the igniter porcelain similar to a spark plug 6 Please refer to the following paragraphs for additional removal procedures 2 1 1 2 1 5 2 1 12 2 1 2 2 1 9 2 1 13 7 Remove flame runner tube Remove the two screws at th
26. 12VDC OUT NE 24 10 WHITE 15 24 GREEN BROWN SWITCHED VEILOW 16 GRW YEL GROUND 17 HI PROBE 18 29 LO PROBE 31 HY 12G CE WIRING DIAGRAM P N 132310 REVA OM SM HY 12GF CE amp HY 24GF CE 3 3 Troubleshooting Chart SYMPTOM WHAT TO CHECK Are electrical connections made with a ground Is gas supply connection made Is pilot ignition switch activated Is gas valve turned on Is spark ignition cable connected to module pilot Are building fuses or circuit breakers all right Are there drafts that could blow out the pilot Is the amber Gas Lockout neon lit If yes press Reset switch Pilot will not light rsa o e Steam generator does not fill with water Is ON switch depressed Is electric supply connected Is water supply connected Check for low water pressure less than 30 PSI Is screen or filter clogged where
27. 2 1 9 Pilot Burner Replacement Current Check Adjustment Pilot Flame Sensor Replacement P N 102258 Natural P N 106610 Propane P N 003328 Flame Sensor 1 Turn off the main gas and power supply 2 Remove the front cover 3 Remove the right side panel as described in Paragraph 2 1 1 4 Turn the manual gas valve to the OFF position Place pilot switch SW3 in the OFF position 5 Disconnect the pilot line from the pilot burner 6 Disconnect the spark lead from the pilot burner 7 Remove the flame sensor from the flame sensor bracket 8 Remove the pilot burner Installation 9 Connectthe pilot line to the pilot burner 10 Connect the spark lead to the pilot burner Be sure to route the lead around the outside of the gas lines 11 Replace the flame sensor on the flame sensor bracket 12 Apply anti seize lubricant to mounting head screw threads Install the pilot burner and flame sensor assembly and tighten the screws NOTE Route the spark lead and flame sensor wire away from the manifold to prevent improper operation 13 Turn manual gas valve to the ON position 14 Connect unit to the branch circuit and turn on the main gas supply 15 Place pilot switch SW3 in the ON position Check for gas soundness OM SM HY 12GF CE amp HY 24GF CE Pilot Flame Current Check 3 The wires are connected to wire fork terminals These will snap on and off the terminal post Unsnap them by gently pulling on the
28. AND TO DRAW ATTENTION TO THE FACT THAT SOME PARTS WILL BY NECESSITY BECOME VERY HOT AND WILL CAUSE BURNS IF TOUCHED ACCIDENTALLY WARNING BEFORE REMOVING ANY PARTITION OR PANEL ALWAYS TURN OFF THE ELECTRIC POWER AND ALLOW THE FAN TO STOP ROTATING BEFORE WORKING ON ANY ELECTRICAL COMPONENT DISCONNECT THE POWER SOURCE FROM THE UNIT NOTE IS IMPORTANT THAT THE END USER ROUTINELY EXAMINE THE FLUE OUTLET ON A REGULAR BASIS DEBRIS COVERING THE FLUE OUTLET CAN CAUSE A POTENTIALLY HAZARDOUS CONDITION REMOVE ANY FOREIGN MATERIAL BEFORE USING THIS PIECE OF EQUIPMENT WARNINGS AND CAUTIONS PROVIDED IN THE BASIC OPERATOR AND SERVICE MANUALS OM HY 6G AND GROEN HYPERSTEAM SERVICE MANUAL MUST BE COMPLIED WITH 5 12 amp HY 24GF CE TABLE OF CONTENTS WARNINGS s erm 2 1 INSTALLATION ASSEMBLY AND COMMISSIONING 4 2 SERVICING AND GONVERSION rere Sen 10 PARTS IDENTIFICATION 2 252 4 eR oe XA a ade BGA aa 26 STEAMER BLOCK DIAGRAM 224 34S429S5 28 S42 Sts 30 INTERCONNECT BLOCK DIAGRAM 2 0 pes dS weed xS UR p REP 31 CONTROL BOARD BLOCK DIAGRAM 32 CONTROL BOARD LED LOCATIONS DIAGRAM 33 3 TROUBLESHOOTING 1er RES eee Ga E eure Ged 34 ond
29. C terminal Install two star washers and kep nuts to secure main control board mounting bracket Install the side cover and fasten with screws Steam Generator Gas Jet Manifold P N 106224 Shut off power and gas to the steamer Remove the right side panel Turn manual gas valve to the closed position Remove the three aluminum tubes connected to the manifold Disconnect the tubes using an open ended wrench Remove the two screws from the pilot mounting bracket Remove pilot from the gas manifold Using a nutrunner or socket wrench remove the two top and two bottom bolts which hold the manifold to the steam generator manifold mounting bracket Remove the burner manifold from the appliance Remove the flame retention springs and injectors as required To Reassemble 9 10 NOTE 2 1 13 Replace the injectors and retention springs Ensure a suitable gas sealant is used on the threads of the injectors to ensure a gas tight seal Fit the burner manifold to the steam generator manifold mounting bracket Reinstall and tighten the aluminum tubes to the burner manifold Ensure all gas connections are sound before continuing Steam Generator Drain Valve P N 071234 Turn off power and allow steamer to drain completely Remove back cover panel and loosen clamps or spring 15 OM SM HY 12GF CE amp HY 24GF CE 2 Test 2 1 14 Using a 7mm nut driver or spring clamp pliers disconnect
30. E 2 2 Parts Identification 27 OM SM HY 12GF CE amp HY 24GF CE 2 2 Parts Identification Key OMAN O Q ON gt Description Cover Right Side Door Assembly Complete Door Handle Door Gasket Mylar Overlay Left Pan Rack Blower Cover Rack Door Locking Pin Door Pin Lock Nut Part No 123196 106365 070123 106209 123131 106309 106384 078914 003823 Key 10 11 12 13 14 15 16 17 18 Description Gas Lockout Neon Tray Drip Screw Shoulder Drip Tray Screw Hex Slot Door Gas Valve Access Door Handle Back Panel Flue Cover Funnel Assembly 28 Part No 122122 106294 070467 069777 106434 087903 125847 106482 106624 Key 19 20 21 22 23 22a 23a 24 Description Left Side Panel Drain Box Door Switch Steam Port Front Steam Port Rear Steam Port Gasket Front Steam Port Gasket Rear Fan Part No 123197 106385 096857 106244 106512 009920 106341 106354 5 12 amp HY 24GF CE Section 3 Troubleshooting 3 1 Basic Operation See Block Diagram 3 1 1 Pilot Burner Ignition and Start Up The pilot switch is located in the lower section behind the front panel When it is placed in the ON position the following take place 1 The control boards and pilot ignition circuits are powered up 2 The gas solenoid valve opens for pilot burner for the steam generator s
31. LE CAUSES CORRECTIVE ACTION Defective high limit steam generator thermostat Check for defective steam generator high limit thermostat It should be closed and will open only when temperature exceeds 113 C Check thermostat continuity with meter If thermostat is OPEN steam generator is less than 1139 replace the thermostat Check fuses F2 and F3 and replace as required Water level probe shorted Measure AC volts from probe to ground An open probe will read 9 13 VAC A shorted probe sensing water will read 0 1 8 VAC If shorted clean the probe Transformer TR1 could be defective Turn on unit power and check supply voltage Then check for 24 VAC at transformer TR1 secondary terminals with wires disconnected If 24 VAC is not present replace TR1 WARNING DO NOT ATTEMPT TO LIGHT THE PILOT BURNER WITH A FLAME Pilot burner flame goes out Check for proper pilot flame height Check for defective main gas valve Check for air flow that blows out pilot Gas supply turned off or interrupted Close gas supply line and check for cause of gas supply loss Have problem corrected Air in gas supply line or blockage Check supply line Clear or clean as required WARNING DO NOT ATTEMPT TO LIGHT THE PILOT BURNER WITH A FLAME Pilot burner not ignited Perform the following trial ignition and look and listen for spark Attempt to ignite the pilot burner If this burner does not ignite within 90 seconds after the pilot switch is turn
32. NG INSTRUCTIONS AND NATIONAL REGULATIONS IN FORCE AT THE TIME PARTICULAR ATTENTION MUST BE PAID TO THE FOLLOWING I E E REGULATIONS FOR ELECTRICAL INSTALLATIONS ELECTRICITY AT WORK REGULATIONS GAS SAFETY INSTALLATION AND USE REGULATIONS HEALTH AND SAFETY AT WORK ACT LOCAL AND NATIONAL BUILDING REGULATIONS FIRE PRECAUTIONS ACT DETAILED RECOMMENDATIONS ARE CONTAINED IN INSTITUTE OF GAS ENGINEERS PUBLISHED DOCUMENTS IGE UP 1 IGE UP 2 BS6173 AND BE5440 FURTHERMORE IS A NEED ARISES TO CONVERT THE APPLIANCE FOR USE WITH ANOTHER GAS A COMPETENT PERSON MUST BE CONSULTED THOSE PARTS WHICH HAVE BEEN PROTECTED BY THE MANUFACTURER MUST NOT BE ADJUSTED BY THE USER USERS SHOULD BE CONVERSANT WITH THE APPROPRIATE PROVISIONS OF THE FIRE PRECAUTIONS ACT AND THE REQUIREMENTS OF THE GAS SAFETY REGULATIONS IN PARTICULAR THEY SHOULD BE AWARE OF THE NEED FOR REGULAR SERVICING BY A COMPETENT PERSON TO ENSURE THE CONTINUED SAFE AND EFFICIENT PERFORMANCE OF THE APPLIANCE WARNING TO PREVENT SHOCKS ALL APPLIANCES GAS OR ELECTRIC MUST BE EARTHED UPON COMPLETION OF THE INSTALLATION THE OWNERS MANUAL SHOULD BE HANDED TO THE USERS AND THE INSTALLER SHOULD INSTRUCT THE RESPONSIBLE PERSON S IN THE CORRECT OPERATION AND MAINTENANCE OF THE APPLIANCE THIS EQUIPMENT IS ONLY FOR PROFESSIONAL USE AND SHALL BE OPERATED BY QUALIFIED PERSONS IT IS THE RESPONSIBILITY OF THE SUPERVISOR OR EQUIVALENT TO ENSURE THAT USERS WEAR SUITABLE PROTECTIVE CLOTHING
33. OUT INDICATOR NEON OM SM HY 12GF CE amp HY 24GF CE POWER ON OFF BUTTON POWER INDICATOR NEON SERVICE INDICATOR CLEAN BUTTON DELIMING PORT OM SM HY 12GF CE HY 24GF CE Cleaning To keep your steamer in proper working condition A Precautions clean it periodically by the following procedure Regularly scheduled cleaning reduces the effort required to clean the steam generators and cavities WARNING BEFORE CLEANING THE OUTSIDE OF A Suggested Tools THE STEAMER DISCONNECT THE HIGH ELECTRIC POWER SUPPLY VOLTAGE 4 KEEP WATER AND CLEANING SOLUTIONS OUT OF CONTROLS AND ELECTRICAL COMPONENTS NEVER HOSE OR STEAM CLEAN ANY PART 1 Mild detergent 2 Stainless steel exterior cleaner like Zepper from Zep Manufacturing Company 3 Lime A Way from Ecolab or equivalent de OF THE UNIT liming agent De liming agent should contain DO NOT MIX DE LIMING AGENTS phosphoric acid not to exceed 30 total ACID AND DE GREASERS ALKALI volume See warning about chlorides and ANYWHERE IN THE UNIT sulfamic acid below TAKE PRECAUTIONS TO AVOID 4 Degreaser like Encompass Malone 34 Puritan CONTACT WITH ANY CLEANERS DE Puribrute or Con Lie LIMING AGENT OR DE GREASER AS RECOMMENDED BY THE SUPPLIER 5 Cloth or sponge MANY CLEANERS ARE HARMFUL TO THE SKIN EYES MUCOUS 6 Plastic wool or a brush with soft bristles MEMBRANES AND CLOTHING 7 Spray bottle CAREFULLY READ THE WA
34. RNINGS AND FOLLOW THE DIRECTIONS ON 8 Measuring cup THE LABEL OF EACH CLEANING AGENT 9 Nylon pad EVEN WHEN THE UNIT HAS BEEN SHUT OFF DO NOT PUT HANDS OR 102 Towels TOOLS INTO THE COOKING CHAMBER UNTIL THE FAN STOPPED TURNING 12 Funnel DO NOT OPERATE THE UNIT UNLESS THE TWO REMOVABLE INTERIOR IMPORTANT PARTITIONS HAVE BEEN RETURNED DO NOT USE ANY METAL MATERIAL SUCH AS TO THEIR PROPER LOCATIONS METAL SPONGES OR METAL IMPLEMENTS DO USE A CLEANING OR DE SUCH AS A SPOON SCRAPER OR WIRE LIMING AGENT THAT CONTAINS ANY BRUSH THAT MIGHT SCRATCH THE SURFACE SULFAMIC ACID OR CHLORIDE SCRATCHES MAKE THE SURFACE HARD TO INCLUDING HYDROCHLORIC ACID TO CHECK FOR CONTENT OF TO GROW DO NOT USE STEEL WOOL WHICH MAY LEAVE PARTICLES IMBEDDED IN THE THESE SUBSTANCES REFER TO THE SURFACE WHICH COULD EVENTUALLY CAUSE MATERIAL SAFETY DATA SHEET CORROSION AND PITTING PROVIDED BY THE CLEANING AGENT MANUFACTURER 11 Plastic disposable gloves CLEAN AND PROVIDE PLACES FOR BACTERIA 42 Procedure 1 Outside a Prepare a warm solution of mild detergent as instructed by the supplier Wet a cloth with this solution and wring it out Use the moist cloth to clean the outside of the unit Do not allow freely running liquid to touch the flue exhaust outlet controls control panel any electrical part or any open louver To remove materials stuck to the unit use plastic wool a fi
35. TEMPERATURE PILOT established the green light on the VALVE RESET SWITCH SWITCH electrical panel is on press the ON Switch for the desired steamer cavity The steam generator will fill with water door on the right side of the unit NOTE The door MUST be closed for the main high heater to work 10 To shut down the unit turn the ON switch to the OFF position The steam generator will 8 When the steam generator has filled with water automatically drain You may also switch OFF the main and low burners will automatically light the pilot switch to conserve energy The READY light should come on within 10 minutes to show that the water has reached its 11 If your steamer works as described it is standby temperature When the READY light is functioning correctly and is ready for use on the operator may take any of the following steps Automatic Pilot Operation a Setthe timer to the desired time for timed Once the pilot burner has been lit it essentially steaming functions as a standing pilot When the pilot switch is on if the pilot is accidentally extinguished by a very strong gust of wind or the like it will re ignite WARNING gt automatically The unit will shut off completely for a AVOID STEAM few seconds while the pilot is re ignited The unit will CONTACT lt then come back on and resume operation in the mode and at the running timer value existing just prior to shutdown The pilot switch may be turned off durin
36. ak detection spray or some solution may be used with the burners lit 131 Gas Pressure Adjustment Gas pressure has been set at the factory but should be checked by connecting a manometer to the pressure tap on the burner manifold The adjusted gas pressures are shown in the table below Provide 230 Volt 50 Hz Single Phase 15 Ampere service Maximum load is 2 Amps The electrical schematic is located in the service compartment and in this manual Gas Propane Gas HY 12GF CE HY 24GF CE If necessary the gas pressure may be readjusted as described in Section 3 WARNING THIS APPLIANCE MUST BE EARTHED 1 3 Gas Supply Connection Incoming service must be of sufficient size to supply full rate without excessive pressure drop A gas meter is connected to the service pipe by the Gas Supplier Any existing meter should be checked out by the Gas Supplier to ensure that it has adequate capacity to provide the required rate of gas to the steamer in addition to any other installed equipment GAS INPUT RATE BTU HR AND KW ee Ta 150130 BTU hr 150130 BTU hr HY 12GF 44 KW 44 KW 2 x 150130 2 x 150130 BTU hr BTU hr 2x44 KW 2x44 KW 1 3 2 Injector Diameters NatualGas Propane Gas Injector No of Injector No of Dia mm Injectors Dia mm Injectors B HY 24GF CE Main Burner high fire Igniter Burner low fire HY 24GF CE HY 24GF Installation pipe work must
37. and servicing instructions and national regulations in force at the time Particular attention must be paid to the following E Regulations For Electrical Installations Electricity at Work Regulations Gas Safety Installation And Use Regulations Health And Safety at Work Act Local And National Building Regulations Fire Precautions Act Detailed recommendations are contained in Institute of Gas Engineers published documents IGE UP 1 IGE UP 2 BS6173 and BE5440 Furthermore is a need arises to convert the appliance for use with another gas a competent person must be consulted Those parts which have been protected by the manufacturer must not be adjusted by the user Users should be conversant with provisions of the Fire Precautions Act and requirements of Gas Safety Regulations In particular they should be aware of the need for regular servicing by a competent person to ensure safe and efficient performance of the appliance WARNING TO PREVENT SHOCKS ALL APPLIANCES GAS OR ELECTRIC MUST BE EARTHED Upon completion of the installation the owners manual should be handed to the users and the installer should instruct the responsible person s in the correct operation and maintenance of the appliance This equipment is only for professional use and shall be operated by qualified persons It is the responsibility of the supervisor or equivalent to ensure that users wear suitable protective clothing and to draw atte
38. be fitted in accordance with IGE UP 2 The appliance governor is suitable for both natural and propane gas without conversion The governor is incorporated in the gas control valve which is inside the control cabinet Connection to the gas supply can be completed with BSPT pipe Although the immediate connection to the appliance is BSPT gas supply piping must be large enough to provide 160 000 BTU hour Minimum supply pressure is 20 mBar for natural gas or 37 mBar for propane gas An isolating cock must be located close to the appliance to allow shut down in an emergency or for servicing The installation must be tested for gas soundness and purged as specified in IGE UP 1 For the part of the integral gas supply downstream Igniter Burner low fire HY 12GF CE Pilot Burner HY 24GF CE Pilot Burner 1 3 3 Burner Air Adjustment The unit is equipped with fixed aeration type burners which have no provision for air inlet adjustment 1 4 Water Supply Connection Water entry is at the rear right side of the appliance There are two water entries on the HY 24GF CE The steamer is fitted for a 4 inch BSPT cold water connection The water supply must be provided at a rate of not less than 7 6 liters two gallons per minute INCH BSPT Pressure must be COLD WATER 2 0 to 4 0 Bar 30 to CONNECTION 60 PSI maximum Water quality minimums require totally dissolved solids T D S of 30 parts per
39. below Remove the governor cap screw on the gas control valve to gain access to the screw inside the turret See photograph The governor is suitable for both natural and propane gas Turn the screw inside the turret clockwise to increase the pressure anti clockwise to reduce it Check the burner pressure again after 15 minutes operation and adjust if necessary Disconnect the pressure gauge from the test point Reseal the test point and test for gas soundness Replace governor cap screw and replace control box panel and lid For operation at high altitudes 1000 meters and above consult the Groen Food Service Engineering Department 1 8 Instructions to User IMPORTANT After installing and commissioning the appliance the User s Instructions should be handed to the user or purchaser Ensure that the instructions for lighting turning off correct use and cleaning are properly understood Emphasize the location of the main gas isolating valve and demonstrate the emergency shut down procedure OM SM HY 12GF CE amp HY 24GF CE To test pressure attach a pressure gauge to the test nipple on the gas manifold A 2 E l m FEET n 17 8 ss ES S m ME amp 3 GAS PRESSURE ADJUSTMENT CAP amp TURRET Adjust Gas Pressure by Turning the Screw inside the Gas Pressure Adjustment Turret 34 BSPT COLD WATER CONNECTION OM SM HY 12GF CE amp HY 24GF CE
40. ber brush or a plastic or rubber scraper with detergent solution Do not use any metal material such as metal sponges or metal implements such as a spoon scraper or wire brush that might scratch the surface Scratches make the surface hard to clean and provide places for bacteria to grow Do not use steel wool which may leave particles imbedded in the surface and cause corrosion and pitting Stainless steel surfaces on the outside of the unit may be polished with a recognized stainless steel cleaner Zepper etc Steam Generator and Cooking Chamber regularly scheduled basis or if the SERVICE neon is on follow the simple de liming instructions below This procedure should be followed for each cavity REMEMBER DON T ALLOW DE LIMING AGENTS TO MIX WITH DEGREASERS a b Ensure that the unit is turned on Set the timer to OFF Using a glove or towel for hand protection carefully open the de liming port The port may be hot and a small amount of pressureless steam may escape as you open the port Add one liter of de liming agent or until the agent is 12 mm below the rim of the port Close the de liming port cover Holding in the CLEAN button press and release the ON button The clean cycle will start and will take about 30 minutes When the cleaning cycle is complete the CLEANING light will flash and the unit will beep OM SM HY 12GF CE amp HY 24GF CE i Wipe out the insid
41. both ends of the drain hose from the spray box and the steam generator Unplug and disconnect the valve electrical wires Remove the 10 32 kep nuts holding the valve to the plate Remove the valve from the threaded studs Then remove silicone hose from the valve Inspect the silicone hose for any damage or lime buildup Clean or replace hose if required Attach new drain valve to valve bracket if bracket applicable Pull silicone hose through drain valve and loosely install hose clamps over both ends of the hose Be sure that the silicone hose is properly aligned and does not have any kinks bends or twists in it Position the valve over the valve mounting threaded studs and connect both ends of the hose to drain box or drain tube and steam generator Position the clamps so that the worm screw may be easily tightened Using a 7mm nut driver tighten both hose clamps Be careful not to over tighten clamps since they could cut the hose If using spring clamps use pliers to position them Install and tighten the valve mounting 10 32 cap nuts Plug electrical leads into wiring harness Operate the steamer and allow steam generator to fill Check for leaks and observe if the drain valve fully closes Turn off the steamer and make sure that the drain valve opens and the steam generator drains Install back cover Drain Box Spray Nozzle P N 106445 Disassemble 1 Turn off power to the steamer Turn off the water supply
42. cessively or to bend it 6 With a pipe wrench or Channel Lock open the pipe union on the left side of the main gas valve and the right side near the solenoid valves Remove the assembly 7 From both sides of the main gas valve using a Channel Lock turn to remove the nipples Support the valve with a vise or Channel GAS PRESSURE ADJUSTMENT Lock pipe wrench To Assemble 8 Screw in and tighten the nipples into both sides of the main gas valve using approved gas pipe sealant OM SM HY 12GF CE amp HY 24GF CE 9 Using a pipe wrench or Channel Lock attach the gas solenoid valves for the upper and lower union and tighten steam generators may be removed as an integrated unit 10 Attach all aluminum tubing and tighten with an open ended wrench 7 Remove the failed gas solenoid valve 11 Plug in the two connectors to the main gas valve To Reinstall 2 1 6 Gas Solenoid Valve 8 Clean pipe threads and apply compound to all P N 122120 joints being connected The gas solenoid valves must be removed as an assembly along with the regulators using the following 9 Install the new gas solenoid valve procedures 10 Slide the assembly into the steamer and align 1 Turn off the gas supply and power to the the tee fitting with the pipe union Align the gas steamer valves with their respective aluminum tubing 11 Connect the pipe union using a Channel Lock 2 Disconnect wires from the main gas Step 4 wrench Paragraph 2 1 5
43. cidity rating of 7 0 or higher Please follow these simple precautions 5 Do not rely on unproven water treatments which are sold as scale prevention or scale removers They don t always work The best way to prevent scale is to supply the purest possible water 10 20 ppm TDS 6 If your water contains scale forming minerals as most water does use a well maintained water softener Whether an exchangeable softener cartridge or a regenerating system is chosen a regular maintenance program is essential T 38 Installing a water meter between the softener and the steamer will provide an accurate gauge of water use and will help determine when to exchange cartridges or regenerate the softener Using a water softener will provide longer generator life higher steam capacity and reduce maintenance requirements If you notice a slowdown in steam production check the unit for scale build up Heavy scale reduces the unit s ability to boil water and can even cause heating elements in the steam generator to overheat and burn out Groen Steamers are also available with an option for two separate water intakes one for the steam generator soft water the other for the spray condenser untreated water The steam generator only uses 14 to 31 of a steamer s water feed Since softener systems are typically sized by total GPH gallons per hour the second intake could reduce treatment requirements by up to 80 resulting in
44. clock position If the door is opened during cooking the door interlock Switch causes power to the convection motor to be stopped and the high heat gas solenoid valve to open 29 This instantly reduces heat in the steam generator and the steam entering the cavity and stops the timer 3 1 3 Water Level Control and Entry Into Steam Generator The HIGH WATER probe determines if there is a full and proper level of water in the steam generator If the water level drops this probe is uncovered and the resulting open circuit is detected by the CONTROL BOARD If this level is low for more than about five seconds the CONTROL BOARD will cause the WATER SUPPLY solenoid valve for that steam generator to turn on This permits water to enter the steam generator Water will continue to enter the steam generator until its level is high enough for electrical contact with the HIGH WATER probe This shows that the steam generator is full and the WATER SUPPLY solenoid valve then turns off This stops water flow to the steam generator When the HIGH WATER probe is uncovered there is a three to five second delay before the water supply solenoid opens This is to allow for the changing levels in the bubbling action of boiling water in the steam generator When the probe is uncovered for more than five seconds the water valve solenoid is activated 3 1 4 Low Water Level Detection The LOW WATER PROBE detects a low levels of water in the steam g
45. ct the two wires from the switch to the wiring harness 20 Close steamer and operate five minutes Then check for leaks If there are no leaks the steamer is ready for operation If there are leaks around the door recheck door alignment and if necessary door gasket installation OM SM HY 12GF CE amp HY 24GF CE 2 2 Parts Identification E eee cy v fan 97 gt 7 29 a at Faget DEN 39 1743 dor 16 53 y gt i 4 2 2 Parts Identification Key ON O OQ Q N gt gt DOA N Description Platform Assembly Motor Assembly Electronic Control Assembly Line Connection Assembly Universal Thermostat Plastisol Boot Valve Water Inlet 2 way triple Timer Steamer 50 Hz Knob Timer Steamer Control PC Board Assy Light amp Timer PC Board Assy Standoff Hex 6 32 x 3 4 Standoff Hex 6 32 x 1 1 4 Harness Timer Motor Jumper Control Bd To Display Bd Cover Control Panel Nut Keps 6 32 Nut lock nylon insert 6 32 Screw slotted hex 8 32 x 1 4 Part No 125818 096740 132453 119873 099947 101143 090827 100983 123100 119801 119817 119826 119827 123120 123122 128800 071289 119855 074242 Key 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 5 12 amp HY 24GF CE Description Nut Rotary
46. d To prepare motor for mounting slide the oil slinger washer onto the shaft about 12mm down the shaft IMPORTANT This washer has two surfaces a rubber surface and a resin surface Make sure the resin surface is facing the motor 10 11 12 Install the plate seal holder onto the motor shaft Carefully slide the plate seal holder down the motor shaft until it engages the slinger washer Continue moving the plate seal holder down the motor shaft until the plate comes to rest on the raised bosses of the motor casting Using this technique the rubber side of the oil slinger washer should be in contact with the plate holder There should be a space of approximately 2mm between the resin face of the washer and the motor Using four hex slotted 6 32 screws screw on the motor mounting plate Be sure each screw 19 OM SM HY 12GF CE amp HY 24GF CE 13 2 1 24 passes through corresponding holes in the plate seal holder The entire assembly may now be positioned on the four threaded stud bolts which protrude from the cavity wall Fasten the assembly with the 20 kep nuts using an 11mm nut driver Make sure that the green ground strap is fastened by one of the kep nuts securing the motor Motor Starting Capacitor P N 106270 Turn off the electrical power Remove the right side panel Remove two screws and slide the panel away from the steamer Unplug the two terminal wires from the capacitor Remove th
47. e manifold and disconnect the nut opposite the orifice 8 Remove its two screws and remove the radiation shield 9 Remove vertical gas flue if HY 24GF from the steam generator by removing the two screws which hold its mounting bracket to the rear panel Remove the two screws securing the vertical flue to the horizontal flue 10 To remove each flue lift the vertical flue enough to clear lip on the horizontal flue 11 Remove the drain vent pipe Remove one screw at the top of the vent pipe and lift the pipe out 12 Remove the drain box mounting screw on the back panel Loosen the hose clamp screw which is inside the frame on the left side Pull drain box out of the steamer and remove the back panel 16 13 Disconnect the wires from the side of the steam generator which are attached to the heat thermostat 14 With an open ended wrench disconnect the high and low water level probes from the steam generator Clean or replace the probes as needed 15 Disconnect the steam generator water inlet hose by loosening its compression fitting with an open ended wrench 16 Remove the terminal block which is mounted inside back panel 17 The steam generator is covered with an insulation blanket Carefully remove this blanket without tearing it so that it can be reused 18 Remove two bolts holding steam generator braces to base 19 The steam generator s may be now be removed Steam generators should be rem
48. e of the steamer cavity the steamer is to be used turn the switch on and set the timer to the ON position When READY neont turns on the steamer is ready for operation NOTES 1 If the clean cycle ends abruptly the CLEANING neon will flash 5 times per second This indicates that the clean cycle was aborted sumi WARNING SHOULD A CLEAN CYCLE BE INTERRUPTED IT ISPOSSIBLE THAT SOME CLEANING SOLUTION IS STILL PRESENT IN THE STEAM GENERATOR RE RUN THE CLEAN CYCLE AND CONFIRM THAT THE WATER IS DRAINING 2 Inthe event of power outage during a clean cycle rerun the clean cycle when the power is restored 3 To abort a clean cycle turn the ON switch off for one second and turn it back on REMEMBER DE LIMING AGENT MAY STILL BE PRESENT IN THE STEAM GENERATOR If the SERVICE neon is on 1 Take the actions listed in the Troubleshooting Section of this manual Turn the steamer off for 10 seconds and then re start 2 Repeat steam generator cleaning cycle DELIMING PORT Open The De Liming Port is at the Bottom of the Control Panel 43 OM SM HY 12GF CE amp HY 24GF CE Maintenance The HY 12GF Steamer is designed for minimum maintenance and no user adjustments should be necessary Certain parts may need replacement after prolonged use If there is a need for service only Groen personnel or authorized Groen representatives should perform the work Always sup
49. e screw which secures the capacitor to the steamer wall To Install New Capacitor 5 2 1 25 Install capacitor and make sure it is seated properly Secure capacitor to the steamer wall with a screw Connect the two terminal wires to the capacitor IMPORTANT Be sure to use the correct valve capacitor 4 uF at 330Volts Steam Generator Ready Thermostat P N 099947 This thermostat is attached to the cavity steam port using two 6 32 screws 1 2 Turn off power to the steamer Unplug the two wires from the thermostat from the wiring harness Using a flat blade screwdriver remove the two 6 32 screws which hold the thermostat to the steam port To install a new thermostat use a small amount of heat sink compound 1 drop applied to bottom of thermostat Seat the thermostat on the steam port and fasten with the two screws as described above Plug the thermostat into the wiring harness OM SM HY 12GF CE amp HY 24GF CE 2 1 26 7 Steam Port Front P N 106594 Steam Port Rear P N 106512 Steam Port Front Gasket P N 099250 Steam Port Rear Gasket P N 106341 Shut off power to the steamer Remove the 4 mm steam hose by loosening the clamp around the hose and sliding it away from the steam port Loosen the hose and remove it from steam port With a flat blade screwdriver remove the two 6 32 screws holding the thermostat to the port With a sharp knife or small scissors cut the
50. e slid forward Once clear of the retaining clip it may be lifted off ASSEMBLY TIP When replacing the left cover assembly be sure that the retaining clip is replaced and screwed down tightly 2 1 3 Water Inlet Valve Three Way P N 090827 1 Turn off power and water supply to the steamer 2 Remove the water supply hose connection on the rear of the steamer 3 Remove the right side panel as described in Paragraph 2 1 1 above 10 11 12 Remove the screws holding the water inlet valve bracket and pull the bracket with the valve a few cm away from the body of the appliance The water inlet valve branches to three individual solenoid activated valves within its housing These are connected with the following three sets of wires Steam Generator Fill Yellow amp Orange Steam Generator Clean Violet amp Gray Condensate Spray Green amp Blue Using a 7 mm nut driver loosen the hose clamps on the inlet valve Slide the hose clamps down the hose until needed for reassembly Loosen and remove the hoses from the valve with a gentle rocking motion Remove the bracket from the valve and lower the valve WITH THE WIRES STILL ATTACHED Carefully unplug the connectors one at a time and attach to the new valve To install a new valve reverse the procedures First install the six wires three sets as listed in item 5 above Make certain that the valve is NOT installed upside do
51. ective wire Pilot burner ignited Main valve will not open No 24 VAC between 24V 1 and 24V 2 Check the strength of the flame sensor Insert an ammeter between the module and ground A minimum of 3 microamps is required Clean pilot burner and sensor Check wire for continuity Replace module 24 VAC between 24V 1 and 24V 2 Replace gas valve 3 4 2 Problem Upper or Lower Cavity Will Not Turn On Amber indicator on power switch is NOT on Place switch in ON position and check switch illuminated older models continuity with meter If switch indicates OPEN in the ON position replace switch If switch Indicates continuity but the amber lamp is not on replace switch Defective steam generator high limit thermostat This device should be closed and will open only when steam generator temperature is in excess of 113 C Check thermostat continuity with meter If thermostat indicates OPEN replace the thermostat 3 4 3 Problem Steamer Cavity Turns Off During Operation Steamer input power interrupted Check for cause of power failure After power is restored restart the steamer High limit steam generator thermostat tripped Check if red neon is lit If lit press reset switch located next to pilot switch If this thermostat trips repeatedly investigate the cause and correct it prior to usage 34 OM SM HY 12GF CE amp HY 24GF CE 3 4 3 Problem Steamer Cavity Turns Off During Operation Continued PROBAB
52. ed on turn off the pilot switch Wait at least five minutes before attempting to reactivate the pilot switch Repeat the trial for ignition The pilot may require several trials for ignition to bleed air from the gas piping After the initial attempt subsequent startups should require only about two to five seconds to achieve pilot ignition Spark observed Turn on oven power Refer to schematic diagram and check for 24VAC at igniter module terminals MV PV and PV 3 4 4 Problem Steamer Cavity Does Not Achieve Ready Status Low power supply lower than 10 percent Check voltage Have customer call power company Steam generator overfills See Problem 3 1 5 35 OM SM HY 12GF CE amp HY 24GF CE 3 44 Problem Steamer Cavity Does Not Achieve Ready Status Continued PROBABLE CAUSES CORRECTIVE ACTION Drain valve open normally open valve Check replace drain valve Check for 20 VDC minimum at drain valve connector and that TR1 output is 22 VAC minimum Improper drain valve operation Check replace water level board Steam generator ready thermostat malfunction Test thermostat for shorted or open condition Replace thermostat Thermostat opens on temperature rise Door open Close door Make sure door is secured by latch Check door adjustment Door switch malfunction Check door switch connectors to wiring harness Check switch for continuity using magnet Check position of magnet in door Low gas pressure supply
53. emove hinge pin Or b Support weight of the door and remove the two door to hinge bolts Place the door on a flat clean smooth table or similar support Be careful not to scratch the door Position door on workbench so that its front is lying flat with the le hanging over the edge of the bench Remove four 8 32 truss head screws and remove the inner door panel Remove and discard door gasket OM SM HY 12GF CE amp HY 24GF CE 7 Clean back of the inner door panel Be sure that the old sealant is completely removed To Install 8 Install a high temperature silicone sealant such as GE RTV 159 Red Sealant on the four spacers 9 Install new door gasket around inner panel as shown in the illustration Be sure the inner door panel flange is fully inserted into the door gasket groove 10 Apply a high temperature silicone sealant such as GE RTV 159 or equivalent to the four door spacers 11 Apply Locktite 242 to inner door panel mounting screws 12 Install inner door panel and door gasket on the door spacers and tighten mounting screws 13 Align door with hinge and insert hinge pin OR apply Locktite 242 to the door to hinge bolts and install the door and mounting bolts Do NOT tighten mounting bolts at this time 14 Align the door to the steamer and tighten bolts 2 1 32 Door Handle P N 070123 Door Cam P N 074252 Magnet and Block Assembly P N 069762 U Channel Assembly P N 106364 Screws P N 005608 Oute
54. enerator Because operation with less than the required amount of water could present a dangerous situation the action of this probe is immediate When the LOW WATER probe is uncovered for more than three to five seconds contact is broken between the probe and water that steamer portion shuts down A high temperature thermostat monitors the temperature in each steam generator It is set at 115 C 240 F and will shut down the steamer if there is little or no water or the steam generator starts to overheat The steamer can be re started after the Reset switch is pressed 3 1 5 Draining Water From The Steam Generator Steam coming from the cavities or water drained from the generator s passes through a water spray in the drain box to cool the steam before it leaves the steamer This spray is controlled by a water solenoid valve A solenoid drain valve is connected to each steam generator This valve is normally open to allow water to drain out from the steam generator When the power Switch for the cavity is flipped to the ON position the steam generator drain valve closes The steam g1 OM SM HY 12GF CE amp HY 24GF CE generator starts to fill up until the water level reaches the HIGH WATER probe When the Cavity Power Switch is turned OFF the solenoid valve opens draining the steam generator The water fill valve and spray condenser valve are then de energized and burner gas valves are de energized 3 1 6 Lime Build
55. g off hours to conserve energy WARNING WHEN YOU OPEN THE DOOR STAY AWAY FROM STEAM COMING OUT OF THE UNIT THE STEAM If the pilot burner ever fails to re ignite automatically CAN CAUSE BURNS within 90 seconds after the unit has been running the Gas Lockout neon on the front control panel will b Turn the timer knob to the manual ON light Wait five minutes and push the Gas Reset position for continuous steam switch to reignite the pilot Should ignition problems persist contact your authorized Groen Service Let the unit wait at standby temperature The Agency steam generator is equipped with a high limit thermostat which will trip if the liquid level probe fails 1 7 Setting the Gas Pressure 9 If this happens the High Temperature neon on 1 During commissioning a gas pressure check is the front control panel will glow and trip a reset essential Connect a suitable pressure gauge to Switch The Reset Switch must be pressed to the gas manifold to perform this test The re start steam generation This switch is located pressure gauge should be connected to the test next to the pilot switch towards the rear of the nipple See photograph at right unit and can be reached through the access Turn the main gas electricity supply on Light the burners as described in Paragraph 1 6 above Manifold gas pressure should be as noted in Section 1 3 1 of the manual If adjustment is necessary follow steps
56. in or out accordingly Adjust pressure so that a banknote or similar piece of paper when grasped by the thumb and forefinger may be pulled out with a slight effort Remove screws Remove handle from cam Apply Never Seez high temperature 1000 C anti seize and lubricating compound to the cam and Locktite 242 to the screw threads Turn handle and cam 180 degrees from original positions and install on the door with screws Be sure handle and cam move smoothly Be sure the door handle is DOWN Turn U channel 180 degrees from its original position Hold the door spring in the U channel open with a screwdriver and install the U channel Check the cam operation Push up on the door handle and see if the spring opens If it does not the cam and spring are NOT correctly aligned and the problem must be corrected Apply a light amount of Locktite 242 to the screws then install them Apply Locktite 242 to the hinge to steamer bolts Install the door and hinge mounting bolts Do NOT tighten mounting bolts at this time Align the door to steamer Refer to 2 1 28 23 OM SM HY 12GF CE amp HY 24GF CE 17 IMPORTANT When door is reversed the alternate door switch installed at the time of manufacture must be connected to the circuit 18 From the right side access of the upper part of steamer disconnect the two door switch leads 19 Wires for the alternate door switch are between the upper and lower cavities Conne
57. ire s in the probe terminal s 3 The wires are connected to wire fork terminals which snap on and off the terminal post Un snap them by gently pulling on the terminal 4 Using a 33mm open ended wrench turn the probe anti clockwise to remove Clean or replace water level probes To Install 5 Apply high temperature pipe compound to the probe and screw it in by hand Using a 33mm open ended wrench tighten the probe into the fitting 6 Replace the probe wire s by snapping the fork terminals around the terminal post Using an 8mm nut driver tighten the terminal nut NOTE f two probes are to be replaced either replace them one at a time or note the color of the wires attached to each probe Do not mix them up 2 1 19 Control Voltage Transformer P N 106234 1 Turn off power to the steamer 2 Using a 6mm nut driver remove four 8 32 Screws holding transformer to electrical box 3 Slide transformer to front of box 4 Using a flat blade screwdriver loosen the four terminals on the transformer 5 Remove the two black and white wires and the two orange and brown wires 6 Remove transformer from electrical box To Install 7 Position transformer on electrical box floor Attach wires as above 8 Slide the transformer to the back of the electrical box so that transformer holes line up with the holes in the box 9 Using a 6mm nut driver magnetic install the four 8 32 screws securely to hold the transformer
58. ith a magnetic tip to remove the two 8 32 screws on the left Then LOOSEN the two 8 32 screws on the right side Do not remove the screws on the right Slide the igniter module to the left so that it clears the screws and remove it To Install 7 Make certain that the two screws the right are screwed in with the heads extended approximately 6 3 mm Position the new igniter against the back wall or mounting bracket of the electrical compartment and slide it under the two screws Place a hex head screw in the nut driver and start each of the two screws on the left When all four screws are in place tighten them one at a time Plug in each of the seven terminals Double check to ensure that they are correct Pilot Switch SW3 Removal P N 087951 Shut off the power supply Disconnect the four color coded wires from the switch assembly Remove the two retaining screws which attach the switch bracket to the lower frame rail of the steamer The switch snaps into the bracket where it is retained by plastic tabs on the top and bottom To remove the switch from the bracket press in on both tabs at the same time and slide the Switch out of the bracket hole To replace the switch 3 4 5 Insert the new switch into the bracket hole until its tabs clear the hole and snap into position Reattach the wires to the switch Replace the switch bracket with two screws 13 OM SM HY 12GF CE amp HY 24GF CE
59. llence Groen warrant their Equipment to be free from defects in material and workmanship for 12 twelve months with the following conditions and subject to the following limitations Vi This parts and labor warranty is limited to Groen Equipment sold to the original commercial purchaser users but not original equipment manufacturers at its original place of installation in areas outside the U S and Canada Damage during shipment is to be reported to the carrier and is not covered under this warranty and is the sole responsibility of the purchaser user Groen or an authorized service representative will repair or replace at Groen s sole election any Groen Equipment including but not limited to draw off valves safety valves gas and electric components found to be defective during the warranty period As to warranty service in the territory described above Groen will absorb labor and portal to portal transportation costs time amp mileage for the first twelve 12 months from date of installation or fifteen 15 months from date of shipment from Groen This warranty does not cover boiler maintenance calibration or periodic adjustments as specified in operating instructions or manuals and consumable parts such as scraper blades gaskets packing etc or labor costs incurred for removal of adjacent equipment or objects to gain access to Groen Equipment This warranty does not cover defects caused by improper installatio
60. lly extinguished by a very strong gust of wind or the like it will re ignite automatically The unit will shut off completely for a few seconds while the pilot is re ignited The unit will then come back on and resume operation in the mode and at the running timer value existing just prior to shutdown The pilot switch may be turned off during off hours to conserve energy If the pilot burner ever fails to re ignite automatically within 90 seconds after the unit has been running the Gas Lockout neon on the front control panel will light Wait five minutes and press the Gas Reset switch to reignite the pilot Should ignition problems persist contact your authorized Groen Service Agency NOTE For operation at high altitudes 2000 feet and above consult the Groen Food Service Engineering Department OM SM HY 12GF CE amp HY 24GF CE Operation WARNING ALL POTENTIAL USERS OF THE EQUIPMENT SHOULD BE TRAINED IN SAFE AND CORRECT OPERATING PROCEDURES NO ATTEMPT SHOULD BE MADE TO OPERATE THIS EQUIPMENT DURING A POWER FAILURE NOTE Before the steamer can be operated as described in this section the pilot burner flame must be established For details see the Initial Start Up section and the Automatic Operation of Pilot above 4 Close the door With the READY indicator lit A Controls See Illustration take one of the following steps Operator controls are on the front right of the unit lf you want to steam the
61. million maximum and a water pH of 7 0 or greater If the available water supply fails to meet these requirements water treatment equipment must be provided to ensure steamer reliability and operating life A Water Research Council approved double check valve or an equally effective backflow prevention device must be fitted in the water inlet pipe 1 5 Drain Connection The unit must be leveled front to back or pitched slightly to the rear one to two degrees by adjustment of the bullet feet on the cabinet base All units are shipped from the factory with a drain box and vent pipe The drain box and vent pipe provide the necessary air gap when properly installed The illustrations at right shows proper installation of drain lines Leave a air gap to any building drain Do NOT create any water traps in the drain line A trap could cause pressure to build up in the cavity during steaming and cause the door gasket to leak WARNING VARIATION FROM THESE INSTRUCTIONS CAN CREATE A HAZARD DO NOT USE PLASTIC PIPING DRAIN MUST WITHSTAND VERY HOT WATER 1 6 Initial Start Up After the HY 12GF CE Steamer has been installed test it to be sure that it is operating correctly 1 Remove all literature and packing materials from the interior and exterior of the unit 2 Make sure the water supply line is open 3 Make sure the gas supply line is open and that the gas shut off valve in the unit is in the OPEN OM SM HY
62. move it from the hose nipple 5 The hose may be removed Be careful that the hose clamps do not fall off and get lost IMPORTANT Make sure that the two short lengths of hose are connected to the angled metal steam tube and connected so that there are no kinks in the hose To Install 6 Slide the two clamps onto the hose Set the hose adjacent to the steam port and the steam generator 7 Slide the hose onto the hose nipple on the steam port and onto the steam generator nipple at the other end Make sure the hose is on all the way so that the end of the hose is against the face of the nipples 8 Slide the hose clamps down so that they are about 3 mm from the end of the hose at both ends Using an 8 mm nut driver tighten the hose clamps NOTE Do not over tighten the hoses since the clamps could cut the hoses 2 1 28 Door Removal Installation Alignment P N 106365 1 To remove the door turn off the steamer power and allow the steamer to cool Then remove the door while supporting its weight and remove the hinge 2 Place the door on a flat clean table or similar support with the gasket facing up Be careful not to scratch door surface 3 Inspect the door gasket for signs of cuts or other defects which might impair its function Replace if necessary To Install 20 To install the door apply Never Seez lubricant to the hinge pin Align the door with the hinge and insert hinge pin or apply Locktite 242
63. n abuse careless operation or improper maintenance of equipment This warranty does not cover damage caused by poor water quality or improper boiler maintenance THIS WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE EACH OF WHICH IS HEREBY EXPRESSLY DISCLAIMED THE REMEDIES DESCRIBED ABOVE ARE EXCLUSIVE AND IN NO EVENT SHALL GROEN BE LIABLE FOR SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES FOR THE BREACH OR DELAY PERFORMANCE OF THIS WARRANTY Groen Equipment is for commercial use only If sold as a component of another O E M manufacturer s equipment or if used as a consumer product such Equipment is sold AS IS and without any warranty Covers All Food Service Equipment Ordered After October 1 1995 46 UNIFIEDBRANDS FOODSERVICE EQUIPMENT SOLUTIONS commu G GROEN 1055 Mendell Davis Drive OM HY 1 2G F 24G F CE Jackson MS 39272 Telephone 601 372 3903 Part Number 132465 INTERNATIONAL Fax 601 373 9587
64. nd PV If 24VAC measured Turn off steamer power gas supply Check pilot burner orifice for blockage Clean and repair if necessary Perform trial ignition e Replace main gas valve MGV1 WARNING BE SURE STEAMERIS DISCONNECTED FROM POWER BRANCH CIRCUIT BEFORE PERFORMING ANY REPAIR WORK MAKE SURE GAS IS SHUT OFF BEFORE REPLACING VALVE 24 VAC not measured Turn off steamer power Check for 24VAC at 24V 1 and 24V 2 WARNING WHEN STEAMER POWER IS TURNED ON THERE IS HIGH VOLTAGE PRESENT IN THE ELECTRICAL COMPARTMENT 33 OM SM HY 12GF CE amp HY 24GF CE 3 4 1 Problem Unit Will Not Turn On Continued PROBABLE CAUSES CORRECTIVE ACTION No spark observed Turn on steamer power Refer to schematic diagram and check for 24 VAC at igniter module terminals 24V 3 and 24V 2 If 24 VAC measured turn off steamer power and Check large orange wire from igniter module to pilot burner for continuity and for insulation breaks Replace wire if necessary Check spark electrode and pilot burner hood Check spark gap Clean and regap if necessary Check if pilot burner is wet Dry pilot burner if necessary Replace igniter module If 24 VAC not measured Turn off steamer power check for correct wiring and disconnect steamer from branch circuit Place pilot switch SW3 in the ON position Check switch continuity Replace switch if meter indicates an open circuit Continuity check SW3 to igniter module wiring Replace def
65. ntion to the fact that some parts will by necessity become very hot and will cause burns if touched accidentally 1 1 General Unpack the appliance and place it on a firm level floor Adjust and fix the feet 1 1 1 Model Number and Dimensions WIDTH DEPTH HEIGHT WEIGHT MODEL in 815 1025 1590 HY 12GF 32 06 40 4 62 6 256 969 815 1025 1853 512 HY 24GF 3206 40 4 73 37 1130 1 1 2 Siting and Clearances CAUTION DONOT INSTALL THIS UNIT SO RIGHT SIDE VENTS ARE BLOCKED OR WITHIN 300 mm OF A HEAT SOURCE SUCH AS BRAISING PAN DEEP FRYER CHAR BROILER OR KETTLE LEVEL THE UNIT FRONT TO BACK OR PITCH IT SLIGHTLY TO THE REAR TO AVOID DRAINAGE PROBLEMS The HY 12GF CE steamer is suitable for installation in combustible and noncombustible locations Minimum installation clearances are Right Side 300 mm 12 inches Left Side 0 mm 0 inches Rear of Flue 150 mm 6 inches The steamer requires 600 mm 24 inches clearance on the right side for service Allow minimum vertical clearance of 750 mm 30 inches between the top edge of the flue outlet and any overlying surface 1 1 3 Ventilation CAUTION THE APPLIANCE FLUE DISCHARGES VERTICALLY FROM THE TOP OF THE UNIT IT MUST NOT BE DIRECTLY CONNECTED TOANY FLUE MECHANICAL EXTRACTION SYSTEM OR DUCTS LEADING TO OUTSIDE THE BUILDING THE UNIT IS BEST DISCHARGED UNDER AN OPEN CANOPY WHICH CONNECTS WITH A VENTILATING SYSTEM
66. onnect the two black wires from the motor leads 2 1 21 Control Board P N 119801 1 Turn off electrical power to the steamer 2 Remove the protective control panel cover 3 Unplug the connectors from the rear of the board 4 Unplug and remove connectors which are jumper plugs and NOT connected to the wiring harness These will be required for the installation of the new board 5 The circuit board is held in position by five plastic retainer clips 6 remove squeeze the flared tabs on the clips one by one to release the clips from the hole in the circuit board Be careful to hold the board so that it does not drop Do not squeeze the clips too tight since this could damage the clips To Install 7 Position the board against the five clips and press each corner in one by one until tabs on each clip clear the holes in the circuit board 8 Insert jacks in the same connector locations as those from which removed Press firmly to be sure the jack is fully seated on the board 9 Install the protective control panel cover 2 1 22 Fan P N 106354 IMPORTANT Make sure it has come to a complete stop before working on the fan 1 remove the fan from either cavity open the door and remove the pan support wire rack in front of the fan 2 With a 3mm Allen wrench loosen the set screw holding the fan to the motor shaft 3 Grasp the fan and with a slight rocking motion pull it off from the motor shaft
67. or the use of either 12 x 20 steamer pans or 18 x 26 bake pans The following table lists pan capacities Number of Pans Pan Size Type HY 12GF CE HY 24GF CE 12 x 20 x 2 steamer 12x20x4 seame 8 13 x 18 half size bake 18 x 26 bake A stainless steel cabinet encases the cavity steam generator and a control compartment which houses electrical components Access to the control compartment is gained by removing the right side louvered panel Door hinges are reversible so that the door may be opened to the left or right Operating controls are on the front panel The drain system for each cavity includes a spray condenser which helps keep steam from coming out of the unit drain Water Conditioning It is essential to supply the steam generator with water that will not form scale Even though the steam generator is engineered to minimize scale formation scale development depends on the hardness of your water and the number of hours the equipment operates In some areas of the country water is low enough in minerals to avoid scale formation But most water supplies are full of minerals which form scale It is this scale which could lead to an early component failure Your water utility can tell you about the minerals in your water The water going to the steam generator should have between 20 and 40 parts per million ppm total dissolved solids TDS and should have a pH a
68. oved from the rear of the steamer This is easier and avoids damage to adjacent components Two people are needed to remove the steam generator 20 Once the steam generator is removed from the table frame and replaced with a new steam generator remove the high and low water level probes water fill brass fittings elbow and hose fitting high heat thermostat safety valve and clean out plug from the old steam generator Clean out the brass piping assembly vent cap and install them on the new steam generator To Install a Steam Generator 21 Carefully wrap the thermal blanket around the steam generator Make sure it fits snugly with no air spaces between the blanket and the generator Fasten seams with aluminum duct tape 22 Slide the steam generator into position from the back of the table frame 23 From the back of the steam generator fasten the steam generator into place on the table frame using the two bolts and a socket wrench with an extension An open ended wrench may be also used 24 To install parts and components reverse the removal procedures described above 25 26 27 28 Connect the steam hose by easing the end of the hose onto the seam generator fitting Make sure the hose engages the fitting all the way Slide the hose clamp down the hose and position it so that the clamp is no more than 6mm from the end of the hose Using a nut driver tighten the hose clamp Do not over tighten as it may
69. ply water with a low mineral content that meets the standards outlined in the Water Conditioning section of this manual If steam or condensate is seen leaking from around the door take the following steps 1 Check the door gasket Replace it if it is cracked or split 2 Inspect the cooking chamber drain to be sure it is not blocked 44 3 Adjust the door latch pin to allow for changes that might occur as the gasket ages a Loosen the lock nut at the base of the latch pin then turn the latch pin 1 4 turn clockwise and tighten the lock nut b After adjustment run the unit to test for further steam leakage c there is still leakage repeat the adjustment d Continue adjusting the pin clockwise until the door fits tightly enough to prevent leakage NOTE It is important that the flue outlet be checked regularly Debris covering the flue outlet can cause a potentially hazardous condition Remove any foreign material before using this equipment 5 12 amp HY 24GF CE Service Log Model No Serial No Date Purchased Purchase Order No Purchased From Location Date Installed For Service Call Date Maintenance Performed Performed by 45 Limited Warranty Commercial Purchasers for Areas Outside of the U S and Canada Groen Foodservice Equipment Groen Equipment has been skillfully manufactured carefully inspected and packaged to meet rigid standards of exce
70. r Door Panel P N 106211 Inner Door Panel P N 106210 Door Insulation Board P N 106216 15 Turn off steamer and allow to cool 16 Remove the two 8 32 truss head screws and the U Channel from door 17 Remove the two 8 32 truss head screws door handle and cam 18 Apply Never Seez high temperature 1000 F anti seize and lubricating compound to the door cam and Locktite 242 screw threads 22 19 20 21 22 2 1 33 Assemble the door cam to the handle with screws Door handle must be in DOWN position Hold U Channel door spring open with a screw driver or similar tool and install the U channel Do NOT install the screws at this time Check operation of the cam and door spring Push up on the door handle and check to determine if the spring opens If spring does not open the cam and spring are not correctly aligned This problem must be corrected Apply Locktite 242 to screws then install screws Door Spring P N 078911 Turn off power and allow steamer to cool With flat screwdriver remove the two 8 32 truss head screws on U channel and remove the U channel from door Carefully remove the retaining ring from one end of spring support pin then remove the pin by moving the pin to the left and to the right With a 10mm nutdriver remove the 10 32 kep nut lift square plate then remove the spring To Install 5 10 11 Apply a high temperature 1000 C anti seize lubricating compo
71. t ups should only need about five seconds to achieve pilot ignition NOTE See Automatic Pilot Operation at the end of this section 7 Once the pilot burner flame has been established the green light on the switch is on press the ON switch for the desired steamer cavity The steam generator will fill with water NOTE The door MUST be closed for the main high heater to work 8 When the steam generator has filled the main and low burners will automatically light The READY light should come on within 10 minutes to show that the water has reached its standby temperature When the READY light is on the operator may choose to take any one of the following steps a Set the timer to the desired time for timed steaming 39 b Turn the timer knob to the manual ON position for continuous steam c Letthe unit wait at standby temperature inc AVOID STEAM CONTACT WARNING WHEN OPEN THE DOOR STAY YOU AWAY FROM STEAM COMING OUT OF THE UNIT THE BURNS STEAM CAN CAUSE 9 To shut down the unit turn the ON switch to the off position The steam generator will automatically drain You may also switch off the pilot switch to conserve energy 10 If your steamer works as described it is functioning correctly and is ready for use Automatic Pilot Operation Once the pilot burner has been lit it essentially functions as a standing pilot When the pilot switch is on if the pilot is accidenta
72. to the door to hinge bolts Then install the door and mounting bolts Do NOT tighten mounting bolts at this time To Align 5 2 1 29 2 1 30 Place a piece of masking tape over the door pin bullet hole in the door Close the door until the door pin just penetrates the masking tape Make sure the door pin contacts only the door latch spring If door pin does not strike the center of the masking tape of spring hole in the U channel loosen the hinge to oven bolts and align the door to the door pin Tighten the hinge to oven mounting bolts You should be able to pull a dollar bill or comparable piece of paper smoothly between the gasket and oven cavity with the door closed To adjust the hinge side loosen the door to hinge bolts and align the door gasket with the oven cavity Tighten the door to hinge mounting bolts To adjust the bullet side refer to Paragraph 2 1 34 Operate oven in Steam mode and check for leaks Door Switch P N 096857 From the right side of the steamer with panel removed unplug the door switch from the cable harness For normal door opening the switch is held in place by two small 4 40 screws With a slotted screwdriver remove these screws to remove the switch To install the switch use the 4 40 screws and a screw driver which has a screwstarter feature If the door has been reversed and the switch must be removed and replaced refer to top and left side cover removal in Paragraph 2 1
73. und Never Seez on the bottom of the U channel surface that contacts with the spring Install the spring onto brass roller then place the square plate over the spring Apply Locktite 242 to the keps nut and install keps nut Install spring support pin then push the retaining ring onto the pin using a screwdriver Hold door spring open with a screwdriver or similar tool hold door handle in the down position and install the U channel top end first Lower the channel into position Check that the spring opens when door handle is pushed up Apply Locktite 242 to the U channel mounting screws then install the screws Replace the two 8 32 truss head screws in the U channel applying Locktite 242 to secure 2 1 34 Door Locking Pin P N 078914 Door Pin Lock Nut P N 003823 Turn off power and allow steamer to cool Record the distance between the lock nut and the end of the bullet shaped locking pin This information will be needed for installation Loosen the lock nut using gt inch box wrench Remove the lock nut and door pin To Install 4 5 10 11 12 13 14 15 16 Coat bullet threads with Never Seez high temp 1000 C anti seize and lubricating compound Install locking pin and lock nut The lock nut to end of pin distance should be the same as measured in Step 2 The pin should be set to retain the closed door firmly Frictional force is adjusted by turning the door pin
74. up In The Generator and on Probes If the HIGH WATER probe is encrusted with lime build up there can be no electrical contact between the probe and the incoming water The result is that water will continue to enter the steam generator and rise above the probe detection level The water level control board will monitor the time that the water solenoid valve is open It will permit the valve to remain open for three minutes which is more than enough time to fill the steam generator This period of time will also result in the steam generator overfilling When this happens the water will enter the steamer cavity and be discharged through the cavity drain hose After three minutes the water valve will shut off the steam generator will drain for one minute the drain valve will close and the Cleaning indicator neon will come on Turning the cavity power switch to the OFF position will drain the steam generator When the switch is turned back after five seconds to the ON position it will reset all circuits and the steam generator will refill with the same results When the Cleaning indicator neon lights the timer control becomes inoperative and the high and low heat solenoid gas valve will not open until the lime deposits are cleaned and the circuit is reset 30 3 2 Diagnostics HyPerSteam Steamers are simple to maintain when the basic operation block diagram truth table schematics and troubleshooting charts are used in s
75. water line connects with steamer Has steam generator been de limed Is the High Tem neon on front panel lit If yes press Reset switch next to Pilot Switch Pilot will light but main burners will not ls ON switch depressed Is electric supply connected Are steamer doors opened Is steam generator limed up Pilot lights but no front panel lamp comes on Call your Groen authorized service agency Red light comes on after four minutes Refer a ls water supply connected to cleaning section b Is water supply hose kinked c Has unit been delimed d Is water screen or filter clogged Excessive steam escaping from rear of unit 15 water spray hose kinked or obstructed b Is water spray solenoid connected Steam generator does not fill with water a 15 ON switch depressed b ls electric supply connected 15 water supply connected Check for low water pressure less than 30 PSI Is screen or filter clogged where water line connects with steamer f Has steam generator been de limed Pilot will light but main burners will not light 15 ON switch depressed b ls electric supply connected Are steamer doors opened d Is steam generator limed up 32 3 4 Troubleshooting Procedures 3 4 1 Problem Unit Will Not Turn On PROBABLE CAUSES Steamer disconnected from power source Improper input power connection s Defective TR1 Transformer Control circuit breaker trips Control
76. wn Attach the valve to its bracket with the two screws and return it to its position Re attach the hoses to the valve Slide the hoses all the way so that the end of the hose is flush against the face of the valve IMPORTANT Be sure the correct hose is connected to the corresponding outlet 13 Slide the clamps back into position around the end of the hoses and tighten the clamps CAUTION DO NOT OVER TIGHTEN THE CLAMPS OVER TIGHTENING CAN DAMAGE THE VALVE Adjustable Legs P N 042505 Each leg is provided with a screw type support post These may be extended or retracted by turning them with a wrench or Channel Lock Be sure that all four legs are in tight contact with the floor for proper steamer support 11 OM SM HY 12GF CE amp HY 24GF CE 2 If damaged the posts may be replaced by tapping out the threaded fitting on the opposite side of the leg which is friction held in each leg The stainless steel leg and threaded fitting are a single assembly Main Gas Valve and Gas Pressure Adjustment P N 122158 1 Disconnect power to the steamer 2 Remove the right side panel as described in Paragraph 2 1 1 above 3 Turn the manual gas valve to the closed position Disconnect the wire to the solenoids 4 Note the color and position of the two connectors for assembly 5 Remove all aluminum tubing from the piping assembly using an open ended wrench Be careful not to move the aluminum tubing ex
77. ystematic fault isolation Within the control circuitry are relays and electronic devices which support this effort In order to aid in the servicing of the steamer Light Emitting Diode LED indicators are located on the right side of the unit in an electrical compartment behind the right side panel When used with the following truth table these LED indicators show proper operation of steamer components and system functions In this section LED indicator illumination patterns which show the following are provided a Proper operation of steamer cavities and control circuitry b Possible problem areas to be investigated as indicated by certain LEDs not being lit OM SM HY 12GF CE amp HY 24GF CE Electrical Schematic SOS PC2 START CAP START CAP J5B1 KAM TOON 2 J J 40 uf C1 C2 4 0 uf 1 RED TO 2 BLUE 24VAC 211212112 RED C2 2 RED HIGH POWER 1 3 3 3 LIGHTAND TIMER BOARD 5 DRAIN la i 5 EDUCTOR 5116115 115 BLUE BLUE 6 HIGH POWER2 14 1116 6 6 6 7 LOW POWER 5 2 KOLET VIOLET 8 BLUE 12 3 8 8 START BROWN BROWN START 9 BLUE FILL 11 4 9 9 BROWN BROWN 10 FAN SPRAY 10 5 0 10 M pe 45VDC 9 6 111 11 MOTOR MAIN MAIN L S i Se 880 7 13 13 LORANGE 6 14 14 VIOLET KEY KEY VIOLET N 4 YELLON 1j YELLOW 3 se 2 a 1 s t 74 5 J4 4 TO 230 VAC DOOR

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