Service Manual
Contents
1. N Ru 4 UNI EY N Z d j 1 CX 90 OC OO E A LL Oc lt 1 Ju es Zr LH ul L I nm b a N N lt 722 s peer EL 7 N d Oy s aN SS LO ns hae 3 OO d lt AN 4 LC C VS E N Siae CN E CN N EN SE U 2 CO Lu 00 OO CN IN 7 L eS fa S DR EL 5 Se SAH C lo pei N 7 5 2 x gt lt Q I E T j T gt 3 gt B E Ni uu MS gt 52 3 ae ND S OC 7s m DY zT re S S 2 xd J _ 2 CN v C a 7 S N cen l C2 XE 2 4 lj 1 NG N n O D AL V XP INC2. 4 C lt lt c x De 2 PE CERO an C N d gt N iS C25 NEE ES 2 J 2 2 Iw 2 P Ut EE NN N NET Bl E 40 22 236 Rev 2 06 11 SERVICE and MG2T GAS FRYER 7 3 Filter System 208 220 240 V EN CI d CAU NJ NN dO ONIN3 N K 1 Hi LIA eL GUI N lt O TSA
3. oO dO d COL 5 DTT N TWWOIdGAL N JOI Se ANTWA LX4N OL 41 22 236 Rev 2 06 11 SERVICE 7 4 Cord Box amp Hood Control US amp Canada 2141 EZ es zt 3L K K6 W YEI x 71 CN CN RED INK HT CN E NAD U 1 NEUI U N L MENT EQUIF QU SUPPLIED 2 5 CUSTOMER i N om Ne EN E av TT 50 P e pd 26 LY O 1 gt TI Z mE CO C AN AN AN AN Ea NO 2 CJ NY 2 5 75 qu 522 gt 2 3 NN 5 Se OC L n L0 lt Via lt X lt C 7 5 Cord
4. vi V x JANN 7 38 NO133J TENE OL v S 3 GCd T CAAA 18 G e ry N A 0 O Q v Z 35 LON MG2T GAS FRYER 39 L22 236 Rev 2 06 11 SERVICE 7 2 Filter System 115V C NJIMOHS N
5. at connector J P35 between pins 2 and 4 3 6 Ignition Module The Ignition Module A2 is a 24VAC input single ignition trial with multiple retrials upon flame loss device senses flame through the spark lead using flame rectification When 24VAC is input between the 24V THS on CE modules terminal and 24V GND the ignition module generates 24VAC output from its PV terminal The igniter sparks until the module senses pilot flame or for 85 90 seconds at which time the module will lock out whichever occurs first When the module has proven the pilot flame it will generate a 24VAC output at the MV terminal resulting in 24 at connector J P32 pin 2 on the relay board The relay board then controls the 24VAC to the gas valve when the Computer Controller calls for heat L22 236 Rev 2 06 11 11 SERVICE Note When the Computer Controller is on the pilot should always remain lit If the pilot is not lit either the high limit is open or the ignition module has locked out Ignition module lockout be reset by turning the fryer off and back on again 34 Relay Board e The relays on the relay board have 24VDC coils They are soldered to the board and are non repairable In the event of a relay failure replace the relay board When installed the relay board must have fish paper installed between it and the heat shield to which it is mounted This prevents the leads on the board from shorting against the
6. ctu Save otv 21 53 3 PHOLHemoVval z ete oed o i a e ton ret test 23 5 3 4 Burner 23 5 3 5 GaS omatus usata aE dapes Clg russa tomi M uma tels suae ia 24 5 4 SD A 25 5 4 1 Probe 25 5 4 2 High Limit Replacement 0 0121 26 5 4 3 Drain Switch eto aa Tawa adr uice WG na naa oU 26 5 4 4 Tank Removal baa oan Cond mea eme EU 27 5 4 5 Tank Disassemb ly ooi LOSES EE oc ode a aga a aa ag 29 546 Tank ASSemDIV iain Pete apr tos ed d qu ve ro 30 5 4 7 TaniinstallalODi a rat haa aR o 33 6 COMPONENT REPLACEMENT FILTER 36 9 EE PUMP AND PUMP BOX Cr H 36 Pump Removal exei mra ere e a dates Qe dao Eni 36 5 12 PUMP BOX aide 37 6 1 9 Pump Iransf
7. E E o D E 2 c c dus 2 45 x x o o 5 5 o E a 3 E 3 z 5 5 2 E 5 z 3 3 9 5 2 5 5 E o a o o 5 5 5 S 2 z o 5 iw Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 23 4 N A LP G31 lp 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGIIT 23 4 N A LP G31 lap 21 5 50 37 25 4 55 LP16 Ja 0 9 MGII Nat G20 G25 234 21 1 20 25 10 3146 1144 N22 Nein 2 2 2 6 4 00 mm EE LP G31 I 21 5 50 37 25 4 55 LP16 Nein 0 88 N A MGIIT Nat G20 G25 234 21 1 20 25 10 146 144 N22 Nein 2 2 2 6 3 05 mm LP G31 lap 21 5 50 37 25 4 55 LP16 Nein 0 88 N A Nat G20 lou 21 1 20 10 1146 N22 Ja 2 2 MGII 23 4 N A SN LP G31 ls 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGIIT 23 4 N A LP G31 lap 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat THIS COUNTRY DOES USE NATURAL GAS TM T LP G31 23 4 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat THIS COUNTRY DOES USE NATURAL GAS MGIIT N A LP G31 lsp 23 4 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGII 23 4 N A LP G31 m 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGIIT 23 4 N A LP G31 lap 21 5 50 37 25 4 55 LP16 Ja 0 9 MGII Nat G20 lou 23 4 21 1 20 10 46 N22 Ja 2 2 N A B LP NOT APPROVED FOR USE WITH LP GAS IN THIS COUNTRY Nat G20 lou 23 4 21 1 20 10 46 N22 Ja 2 2 MGIIT N A LP NOT A
8. 1 2 High Limit System e If the High Limit HL1 opens trips it interrupts the 24VAC supply to the ignition module As a result the pilot goes out When the Computer Controller calls for heat it will not receive a 24VAC heat feedback signal After 10 seconds 90 seconds on first heat demand of heat demand output lacking a heat feedback signal the Computer Controller will indicate IGNITION FAILURE or HEAT FAIL After the High Limit is reset allow unit to cool below 400 F 204 C and press red reset button the Computer Controller will have to be turned off and back on for the unit to heat 1 3 Hood Relay System U S Canada units only e There is one Hood Relay per system battery of fryers located in a box mounted below the rear bottom brace of left hand fryer It is wired in parallel to the Side On signal of every Computer Controller both sides of an MG2T Split When any side of any Computer Controller is turned on this relay is energized providing power to the hood fan motor and will stay energized until all Computer Controllers are turned off he Side On harness is equipped with a Fuse F In the event of a short or over current in the wiring to the Hood Relay all the F fuses the system will blow As a result the fryer will no longer control the hood fan motor To repair first correct the over current condition and then replace all the F fuses in the fryer system 1 4 Tempera
9. connectors J31 and J33 the S O indicator will illuminate the side on relay S O will energize and there will be a 24 VAC output at pin 4 on connector J32 e When the board receives a 24 VDC heat demand input at pin 6 on connectors 931 or J33 the indicator will illuminate t s the heat demand relay H D will energized and there should be continuity between pin 1 and pin 2 at connector J32 V 10 M E rog 2 A 12 L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE 3 8 Computer Controller The McDonald s Computer controller is an electronic temperature control timer and menu control Input signals to the controller Power Heat Feedback are 24VAC Controller outputs Side On Heat Demand are 24VDC Temperature is measured via a thermistor temperature probe RT1 The same controller is used for McDonald s Gas and Electric Fryers and for both Full and Split Tanks When the controller is powered up it looks at probe and drain valve inputs to determine if it is a full or split configuration For this reason always connect the right harness first and then the left harness when connecting a Split as power comes into the controller via the left harness Note When replacing a controller it must be set up for the appliance type GAS GAS2 or ELECTRIC on which it is installed The MGII fryer uses the GAS2 temperature algorithm Failure to set the control up for the correct
10. 180 82 200 93 210 99 220 104 240 116 260 127 280 138 300 149 320 160 325 163 15 446 10 716 7 986 6 427 5 470 4 013 2 991 2 262 1 734 1 347 1 267 355 179 360 182 365 185 370 188 375 191 380 193 385 196 390 199 395 202 400 204 which it was taken Compare these values to those in the table at right If the probe measures open circuit O L or o or shorted 0 Ohms it should be replaced If the resistance varies more than 30 Ohms when being checked between 325 375 F 163 190 C the probe will give a false temperature reading to the computer controller and should be calibrated up to 10 F or replaced 3 2 Gas Valve The Gas Valve VI has dual 24VAC valve coils When 24VAC is applied to the PV connection the pilot valve opens allowing gas to flow to the pilot INCREASE When 24VAC is applied to the MV connection the main valve opens allowing gas to flow to the main burners Pilot flame is adjustable using the pilot adjustment screw It should be adjusted at installation to achieve a flame sense current of 0 15 uA or greater Note This procedure requires the use of a DC microammeter The meter should be wired with a switch that allows the meter to be switched out of the circuit while the ignition system is sparking Connect the DC microammeter between the flame sensor spark terminal and the flame sensor lead spark cable Once the pilot is lit and sparking has stopped switch the
11. 2 Computer Removal HA n PE 1 Remove Bezel Screws with Phillips Screwdriver 1 Remove two 10 24 nuts securing top of computer to bezel studs 2 Loosen two 10 24 nuts securing bottom of computer to bezel studs 3 Remove computer from bezel 5 1 3 Wire Reduction Board 1 Fuse F1 is located on Wire Reduction Board Replace with 2 5 A Fast acting fuse if needed 2 Disconnect all harnesses from Wire Reduction Board 3 Disconnect 12 Position Connector s connecting Computer to Wire Reduction Board Harness 4 Remove Bezel 3 With a narrow tip flat blade screwdriver remove four wire reduction board mounting crews Note Retain wire reduction board insulation and screws for reinstallation 122 236 Rev 2 06 11 17 SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 5 1 4 Front Panel and Top Deck 1 Remove front panel bezel 5 Remove front panel heat shield from cabinet 2 Disconnect electrical harness from wire reduction lower end first sliding harness strain relief out of board notch in shield Remove inner burner heat shields 6 Repeat steps 1 5 for each fryer in the system 3 Remove screws securing front panel bottom rail to cabinet using 5 16 hex bit aT 7 Remove screws securing top deck to cabinet using 5 16 hex bit Remove top deck 8 Installation is the revers
12. 23 4 N A LP G31 ls 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGII 23 4 N A LP G31 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGIIT 23 4 N A LP G31 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 1146 N22 Ja 2 2 MGII 23 4 N A LP G31 lap 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 21 1 20 10 46 22 2 2 MGIIT 23 4 N A LP G31 ls 21 5 50 37 25 4 55 LP16 Ja 0 9 L22 236 Rev 2 06 11 15 SERVICE 3 4 83 5 Nat LP LT Nat MGIIT LP Nat LP LU Nat MGIIT LP Nat MGII LP LV Nat MGIIT LP Nat MGII LP MT Nat MGIIT LP Nat MGII LP NL Nat MGIIT LP Nat LP NO Nat MGIIT LP Nat LP PL Nat MGIIT LP Nat MGII LP PT Nat MGIIT LP Nat LP RO Nat MGIIT LP Nat MGII LP ES Nat MGIIT LP Nat MGII LP SK Nat MGIIT LP Nat LP SL Nat MGIIT LP Nat MGII LP SE Nat MGIIT LP Nat MGII LP CH Nat MGIIT LP Nat LP TR Nat MGIIT LP 16 Gas G20 G20 G20 G31 G20 G31 G20 G20 G31 G31 G25 G31 G25 G31 G20 G20 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G31 G20 G20 G20 G31 G20 G31 G20 G31 G20 G31 Ger tekategorie Eingangsleistung brutto kW N Co EN NOT 23 4 NOT 23 4 23 4 23 4 NOT 23 4 NOT 23 4 23 4 23 4 23 4 23
13. COUNTRY NATURAL GAS 155 LP16 NATURAL GAS 55 LP16 44 N22 155 LP16 44 N22 55 LP16 46 N22 IN THIS COUNTRY 46 N22 IN THIS COUNTRY 46 N22 155 LP16 46 N22 55 LP16 46 N22 155 LP16 46 N22 55 LP16 46 N22 155 LP16 46 N22 55 LP16 46 N22 155 LP16 46 N22 55 LP16 46 N22 155 LP16 46 N22 55 LP16 46 N22 155 LP16 46 N22 55 LP16 46 N22 IN THIS COUNTRY 46 N22 IN THIS COUNTRY 46 N22 155 LP16 46 N22 55 LP16 46 N22 155 LP16 46 N22 55 LP16 Regler Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Ja Nennleistung m hr 2 2 2 2 0 9 2 2 0 9 2 2 2 2 0 9 0 9 2 6 0 88 2 6 0 88 2 2 2 2 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 2 2 2 2 2 2 0 9 2 2 0 9 2 2 0 9 2 2 0 9 GATI Eingang Messblende mm N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A N A MGII and MG2T GAS FRYER SERVICE 5 Component Replacement Fryer 5 1 Front Panel WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 5 1 1 Front Panel Bezel 5 1
14. Filter Pan and Cover 2 Disconnect pump power cable from rear of pump box Remove pump rod bracket using 5 16 hex bit While supporting pump remove pump support rods 3 Remove cabinet rear bottom cover using a 5 16 hex bit 8 Lower and remove pump assembly from cabinet 4 Disconnect pump return hose from return valve using 1 1 16 wrench 9 Installation is reverse of removal When reinstalling filter pickup receptacle tighten until 5 Unscrew filter pickup receptacle and pipe receptacle extends 13 16 3 4 from cabinet nipple from pipe coupling using arc joint pliers 36 L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 6 1 2 Pump Box 6 1 4 Pump Relay Note On split tank fryers it may be necessary to remove pump in order to remove pump box MEA 1 Remove Pump Box See Section 6 1 2 2 Remove relay from pump box using Phillips screwdriver and needle nose pliers 1 Disconnect all electrical connections to pump box 3 Disconnect wires to pump relay noting location for reassembly 6 1 5 Pump Circuit Breaker 1 Remove Pump Box See Section 6 1 2 2 Remove screws securing pump box to cabinet bottom brace using a 5 16 hex bit 3 Slide pump box back and out of cabinet 2 Remove circuit breaker from pump box by 6 1 3 Pump Transformer squeezing pan
15. PRIOR TO STARTING ANY SERVICE WORK WARNING DISCONNECT APPLIANCE FROM GAS SUPPLY OR SHUT MANUAL GAS VALVE PRIOR TO SERVICING GAS TRAIN 5 3 3 Pilot Removal 5 3 4 Burner Removal 1 Close Manual Gas Shutoff Valve See Section 4 3 1 1 Remove screw securing ground wire to pilot bracket using 5 16 socket 2 Loosen and disconnect top valve flare fitting from burner manifold using 1 1 16 open end wrench on female brass flare fitting at top of valve and 15 16 open end wrench on male brass flare fitting attached to burner manifold 2 Unplug high voltage spark cable from pilot assembly 3 Pull gas valve assembly forward and down to provide access to burner mounting screws 3 Remove 2 screws securing pilot assembly to burner bracket using 5 16 hex bit L J gt T3 j 4l E A F A o2 7 me DE I 5 1 2 4 2 tore a f 4 1 7 NS lala me due SN 2 77 2 CA 41 E 4 4 Loosen and remove pilot tubing from gas valve using 7 16 open end wrench 4 On Full Tank fryers remove screw securing flame carryover brackets using a 5 16 hex bit L22 236 Rev 2 06 11 23 SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK WARNING DISCONNECT APPLIANCE FROM GAS SUPPLY OR SHUT MANUAL GAS VALVE PRIOR TO SERVICING GA
16. metal heat shield Relay Board Component Explanation Fuse F1 fuse is blown AC will not be lit Trouble Shooting Lights When lit 1 Fuse and T1 Transformer are good S O When lit AT Computer is and Side On Relay should be energized When lit A1 Computer is on and calling for heat Heat Demand Relay should be energized Relays K1 Heat Demand Relay will be energized when A1 Computer calls for heat and when is lit K3 Side On Relay will be energized when A1 Computer is on and A C is lit Connectors J31 Connects to A1 Computer 932 To Side On and Heat Demand Contactors and Heat Feed Back J33 To 24 VAC jumper harness J34 To Drain Switch 935 Input voltage from transformer Relay Board lel Note J connectors are marked on the relay board n EE 35 CLASS 2 e With 24 VAC supplied to pin 2 at connector J35 and a good lt 2 D2 tor F1 fuse the relay board will have a 24 VAC output at pin 2 on 59 05 i connectors J33 and J34 and the A C indicator will be PITCO 60127301A illuminated ADATE MMODYY Note Since the fryer is equipped with a computer at oh n connection J33 there will be a jumper from pin 2 to pin 10 to supply 24 to pin Z2 at connection J31 to supply K1 K3 the controller with 24 VAC SIDE e When the board receives a 24 VDC side on input at pin 7 on ON
17. rmer sucka obedire Pe ga ga E pana aE 37 514 ev ed aveo be a itd ote 37 6 5 P mp ed in mt nan tan dedita 37 6 2 PCIE asein 38 6 21 Dan Eine REMOVALS SS re vet soe vade Pet pu a eo tuU ve Rae Pe V roiv PRI dI PEU ed reta pa gua d Vs 38 Ts SCHEMATICS c 39 Tali CONTROL SCHEMATIC 39 7 25 FILTER OYSTEM LIOV d UIN 40 7 3 FILTER 5 206 220 240 5 annann 41 7 4 CORD Box amp HOOD CONTROL US amp 2 480444244 4 42 7 5 CORD Box w o HOOD CONTROL US CANADA 42 HO CORD BOX EXPORT CB ada a ag aaa 43 4 22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE 1 Theory of Operation Knowing and understanding the MGII sequence of fryer and component operation will enable you to diagnose equipment failure more easily and accurately Note The schematic references used are derived from the schematic on pages _ of this manual 1 1 Heating System Power to the machine is turned ON e When the fryer is plugged in power is supplied to the transformer T1 The transformer steps the line voltage down t
18. 4 NOT 23 4 NOT 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 23 4 NOT 23 4 NOT 23 4 23 4 23 4 23 4 Engangsleistung netto kW 21 1 APPROVED 21 1 APPROVED 21 1 21 5 21 1 21 5 21 1 APPROVED 21 1 APPROVED FOR FOR FOR FOR THIS COUNTRY 215 THIS COUNTRY 21 5 21 1 25 21 1 21 5 21 1 APPROVED 21 1 APPROVED 21 1 21 5 21 1 21 5 21 1 21 5 21 1 21 5 21 1 21 5 21 1 21 5 21 5 21 1 21 5 21 1 21 5 21 1 21 5 21 1 21 5 21 1 21 5 21 1 APPROVED 21 1 APPROVED 21 1 21 5 21 1 21 5 21 1 21 5 21 1 21 5 FOR FOR FOR FOR iu a 20 10 USE WITH LP GAS 20 10 USE WITH LP GAS 20 10 50 37 25 4 20 10 50 37 25 4 20 10 USE WITH LP GAS 20 10 USE WITH LP GAS DOES NOT USE 50 37 25 4 DOES USE 50 37 25 4 25 10 50 25 4 25 10 50 25 4 20 10 USE WITH LP GAS 20 10 USE WITH LP GAS 20 10 37 25 4 20 10 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 USE WITH LP GAS 20 10 USE WITH LP GAS 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 20 10 50 37 25 4 22 236 Rev 2 06 11 3 E E o a E 5 46 N22 IN THIS COUNTRY 46 N22 IN THIS COUNTRY 46 N22 55 LP16 46 N22 55 LP16 46 N22 IN THIS COUNTRY 46 N22 IN THIS
19. ARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK WARNING DISCONNECT APPLIANCE FROM GAS SUPPLY OR SHUT MANUAL GAS VALVE PRIOR TO SERVICING GAS TRAIN 5 4 4 Tank Removal 1 Completely drain fry tank into a suitable container If changing a split tank drain both halves of the tank Close Manual Gas Shut off in gas supply piping to fry tank being serviced Remove filter drain line if so equipped See Section 6 2 1 4 Remove drain valve handle s from drain valve s using 11 16 socket Unplug high limit electrical plug s P5 probe electrical plug s P7 and drain switch electrical plug s P8 from jacks above ignition module L22 236 Rev 2 06 11 6 Remove pilot assembly s See Section 5 3 3 Loosen and disconnect gas valve s top flare fitting from burner manifold using 1 1 16 open end wrench on female brass flare fitting at top of valve and 15 16 open end wrench on male brass flare fitting attached to burner manifold 9 On filter equipped fryers remove return valve handle retainer s using 5 16 hex bit On filter equipped fryers remove return valve handle support bracket s from burner rack using 5 16 hex bit 27 SERVICE 11 For filter equipped fryers remove cotter pin securing return valve handle to valve link Save flat and spring washer for reinstallation AY 12 For filter equipped fry
20. Box w o Hood Control US amp Canada 2 J 1 uM X d a Vl NN CO On WN 4 VN gU CD 5 vL n18 2 _ es ast d E NO T 2 Zz ok 5 ON um pc EN C2 AD PUN f 42 122 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE 7 6 Cord Box Export amp CE IE OTHERS Y O ET lt ea 11 pg es VL LHM v a ee 93 FL A 9 N N e AER NN 125 7 SA N 4 i x js N T MA CN CO gt lt Ll IN 2 2 2 D A N DUA UMP AND G2 TO P ENIRANC M L22 236 Rev 2 06 11 In the event of problems with or In the event of problems with or questions questions about
21. CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK through fitting one at a time 14 Tighten fitting into tank coupling using 9 16 wrench 16 32 half gt gt A 1 1 4 f E 15 split tanks tighten ferrule nut using 7 16 wrench Repeat steps 11 15 for other tank e Attach high limit bracket to burner bracket using 5 16 hex bit On split tanks the bracket is installed on the lower center mounting holes of the burner bracket On full tanks it is mounted on the lower right two mounting holes L22 236 Rev 2 06 11 Insert high limit bulb and capillary through fitting in tank bottom On split vats ensure that right hand bulb is inserted into right hand tank and left hand bulb is inserted into left hand tank Apply pipe thread compound or Teflon tape to pipe threads of high limit fitting and tighten fitting into tank coupling using 9 16 open end wrench 20 Secure high limit bulb to tank tapping pad using bulb clamp and Phillips screwdriver MGII and MG2T GAS FRYER SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 5 4 7 Tank Installation 21 On full tanks the slide the probe through the ears of the bulb clamp and then tighten clamp 1 Install tank assembly into cabinet to tapping pad with high limit bulb secured beneath the clamp 2 Atta
22. IMPORTANT FOR FUTURE REFERENCE Please complete this information and retain this manual for the life of the equipment Serial ENGLISH Service Manual McDonald s Full and Split Gas Fryers with and without Filter 1 CET LP NSE LAT TELS L22 236 Rev 2 06 11 TO THE PURCHASER OWNER AND STORE MANAGER Please review these warnings prior to posting them in a prominent location for reference TO THE PURCHASER Post in a prominent location the instructions to be followed in the event that an operator smells gas Obtain this information from your local gas supplier WARNING DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WARNING Improper installation alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instructions thoroughly before installing or servicing this appliance WARNING Installation maintenance and repairs should be performed by a Pitco Authorized Service and Parts ASAP company technician or other qualified personnel Installation maintenance or repairs by unauthorized and unqualified personnel will void the warranty WARNING Installation and all connections must be made according to national and local regulations and codes in force WARNING During the warranty period if a customer elects to use a non original part or modifies an origin
23. LUE BAFFLE m 14 CEGAS TABLE ios disant cm BE EISE Ga Bala Desa ads 15 5 COMPONENT REPLACEMENT FRYER 17 5 15 FRONT PANEL i a pa 17 1 Aa 17 5 L2 COMPUTER REMOVAL e od veas undis usd 17 5 1 9 Wire Reduction on iier 17 5 1 4 Front Panel and Top 2142 1 1 18 5 2 CONTROL COMPONENTS e E S 19 5 2 1 Ignition MOQULE SR a tva Obr aa ban 19 5 2 2 Transformer BOX 19 9 2232 20 52 4 Entant BOX oo welt a aga nah 20 5 2 5 Hood Relay North America Only 00 2 022 2 20 539 GAS TRAIN pe X X 21 22 236 Rev 2 06 11 3 TABLE OF CONTENTS 59 9 Manual Gas de 21 3 22 aa
24. Loosen top valve flare fitting from burner manifold using 1 1 16 open end wrench on female brass flare fitting at top of valve and 15 16 open end wrench on male brass flare fitting attached to burner manifold c Unscrew top flare connection and remove 1 Disconnect 6 Pin Plug from Gas Valve gas valve from fryer L22 236 Rev 2 06 11 21 SERVICE 22 a 5 Remove brass quick disconnect fittings from Gas Valve using 15 16 open end wrench on male flare fitting at bottom of valve and 7 8 thin open end wrench on male end of female fitting at top of valve Loosen and disconnect top valve flare fitting from burner manifold using 1 1 16 open end wrench on female brass flare fitting at top of valve and15 16 open end wrench on male brass flare fitting attached to burner manifold 6 For Full Tank valves remove screw securing heat shield to valve using 1 4 socket Move valve forward to access supply tubing at bottom of valve Straighten and remove vent tubing Installation is reverse of removal Be sure to Loosen and remove gas supply tubing at re install heat shield on valve bottom of valve using 1 1 16 open end wrench on tubing end connector and remove valve from fryer 9 Leak test all gas fittings after re assembly using an appropriate leak detection fluid L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS
25. PPROVED FOR USE WITH LP GAS IN THIS COUNTRY MGII Nat G20 lou 23 4 21 1 20 10 46 N22 Ja 2 2 N A M LP NOT APPROVED FOR USE WITH LP GAS IN THIS COUNTRY Nat G20 lou 23 4 21 1 20 10 46 N22 Ja 2 2 MGIIT N A LP NOT APPROVED FOR USE WITH LP GAS IN THIS COUNTRY MGII Nat G20 lou 23 4 21 1 20 10 46 N22 Ja 2 2 N A LP NOT APPROVED FOR USE WITH LP GAS IN THIS COUNTRY Nat G20 lou 23 4 21 1 20 10 46 N22 Ja 2 2 MGIIT N A LP NOT APPROVED FOR USE WITH LP GAS IN THIS COUNTRY Nat G20 G25 21 1 20 25 10 46 44 N22 Ja 2 2 2 6 MGI 23 4 N A ES LP G31 ke 21 5 50 37 25 4 55 LP16 Ja 0 88 Nat G20 G25 21 1 20 25 10 146 144 N22 Ja 2 2 2 6 MGIIT 23 4 N A LP G31 le 21 5 50 37 25 4 55 LP16 Ja 0 88 Nat G20 G25 21 1 20 25 10 1146 1144 N22 Ja 2 2 2 6 MGII 23 4 N A BE LP G31 ls 21 5 50 37 25 4 55 LP16 Ja 0 88 Nat G20 G25 21 1 20 25 10 146 144 N22 Ja 2 2 2 6 MGIIT 23 4 N A LP G31 ss 21 5 50 37 25 4 55 LP16 Ja 0 88 Nat G20 lou 21 1 20 10 1146 N22 Ja 22 MGII 23 4 N A G31 E 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGIIT 23 4 N A LP G31 ls 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGII 23 4 N A EE LP G31 lap 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGIIT 23 4 N A LP G31 las 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 23 4 N A T LP G31 ls 21 5 50 37 25 4 55 LP16 Ja 0 9 Nat G20 lou 21 1 20 10 46 N22 Ja 2 2 MGIIT
26. RVICE 5 4 2 High Limit Replacement T 1 4 5 26 WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK Completely drain fry tank into a suitable 1 container 6 Unscrew high limit fitting from tank bottom using 9 16 open end wrench 7 Pull bulb and capillary through coupling in tank bottom O A 8 Installation is reverse of removal Note the Remove 2 screws securing high limit switch to following burner bracket using 5 16 hex bit l A4 e Apply pipe thread compound or Teflon tape to pipe threads of high limit fitting prior to installing in tank coupling Leave ferrule nut loose until bulb has been secured in bulb clamp not overtighten ferrule nut as it will shear capillary tubing 1 4 turn beyond hand tight should provide sufficient sealing Check for leaks after tank has been refilled Unplug high limit electrical plug P5 from jack 54 3 Drain Switch Removal J5 above ignition module 1 Unplug drain switch electrical plug P8 from jack J8 above ignition module Unscrew capillary ferrule nut using 5 16 open end wrench Hemove 2 screws securing bulb clamp to tank 2 Remove screws securing drain switch bracket tapping pad using Phillips screwdriver to drain valve using Phillips screwdriver Remove bulb clamp 122 236 Rev 2 06 11 and MG2T GAS FRYER SERVICE W
27. S TRAIN 5 3 5 Gas Conversion 1 Note On some fryers burner replacement is required when performing gas conversion If burner removal is required remove burners per Section 5 3 4 2 Remove pilot assembly See Section 5 3 3 Hemove gas supply tubing from pilot Remove pilot orifice and install new pilot orifice 5 Remove burner mounting screws 2 burner 4 Remove front panel bezel bottom rail and using 5 16 hex bit heat shield to gain access to burner orifices See Section 5 1 4 X 3 8 6 Remove burners 5 Remove burner orifice tips using 7 16 wrench Install new burner orifices Reinstall pilot assembly If removed reinstall main burners 6 7 8 Remove gas valve regulator cap screw 9 Remove regulator adjustment screw 1 0 Remove regulator spring Install new regulator spring Reinstall regulator adjustment screw 7 Note On split vat fryers it may be necessary to 11 Install manometer at regulated gas pressure bend up the outside tabs on the burner bracket tap Ensure that there is adequate oil in fry shield to allow removal of the outside burners tank Press I O button to start fryer Adjust 2 regulated gas pressure to specification for gas 8 Installation is reverse of removal Be sure that being used burner is properly seated on orifice spuds when re installing burner 12 Reinstall regulator cap screw 13 Install Gas Conversion Label on inside door of fr
28. al part purchased from Pitco and or its Authorized Service and Parts ASAP companies this warranty will be void In addition Pitco and its affiliates will not be liable for any claims damages or expenses incurred by the customer which arises directly or indirectly in whole or in part due to the installation of any modified part and or received from an unauthorized service center WARNING This appliance when installed must be electrically grounded in accordance with local codes or in the absence of local codes with the National Electrical Code ANSI NFPA 70 or the Canadian Electrical Code CSA C22 2 as applicable WARNING Adequate means must be provided to limit the movement or this appliance without depending on the gas or electrical cord connection Single appliances equipped with legs must be stabilized by installing anchor straps All appliances equipped with casters must be stabilized by installing restraining chains or equivalent means WARNING An appliance equipped with casters and a flexible gas line must be connected to the gas supply with a quick disconnect device This quick disconnect must comply with ANSI Z24 41 WARNING DO NOT alter or remove structural material on the appliance to accommodate placement under a ventilation hood WARNING This appliance is intended for professional use only and should be operated by fully trained and qualified personnel WARNING If the appliance is equipped with a
29. appliance type may result in poor appliance operation Note All controller test points are at connector P J1 closest connector to the controller e With 24 supplied to pin 1 24 VAC supply and pin 5 24 VAC input from DVI the display should read OFF e With the controller turned on there will be a 24 VDC output at pin 9 side on e When the controller calls for heat there will be a 24 VDC output at pin 8 heat demand and a 24 input at pin 6 heat feed back If the controller does not receive the 24VAC input at pin 6 within 10 seconds 90 seconds on first heat demand the controller will display HEAT FAIL or IGNITION FAILURE This indicates that the controller did not receive a heat feedback signal when it called for heat If this occurs Look to see if the pilot is lit If not 1 Check the high limit switch Is it open 2 Checkthe ignition module A2 Sensing pilot flame locked out e f the pilot is lit Check the heat demand HD relay K1 on the relay board Is heat demand relay energized Continuity through COM and NO contacts e If display reads PROBE check the resistance of the temperature probe RT1 See the table on page 5 Check the wires and connectors between the probe and controller for continuity If display reads SYSTEM FAILURE or HOT HI 1 test the temperature probe and the wires and connectors between the p
30. ch tank to cabinet using 5 16 hex bit to install the 4 mounting screws at the front of the 22 On full tanks tighten the probe ferrule nut cabinet using a 7 16 wrench 3 Install 2 mounting screws securing tank to cabinet rear 23 Tighten the capillary ferrule nut using a 5 16 open end wrench Do not overtighten the ferrule nut as it will shear capillary tubing 1 4 turn beyond hand tight should provide sufficient sealing 24 For split tanks repeat steps 17 20 and 23 for the other tank half 4 Apply a bead of food safe silicone sealant to the seam s between adjacent tanks L22 236 Rev 2 06 11 33 SERVICE 34 WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK a 4 Install channel strip s between adjacent fry 9 tanks o For filter equipped fryers install return valve handle through hole in valve link Install flat and spring washer and hold in place with pliers Install cotter pin through hole in link to secure handle Slide splashback in place over rear of cabinet and tank Install screws securing splashback to rear of tank using a flat bladed screwdriver 10 Install cabinet rear bottom cover 11 Reinstall top deck front panel heat shield s bottom rail and front panel bezel See Section 5 1 4 Install screws securing splashback to cabinet rear using a 5 16 bit 12 For filter equipped fr
31. e of removal 4 Remove screws securing front panel heat shield and strain relief retention clip to cabinet using 5 16 hex bit 18 L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE 5 2 Control Components WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 5 2 1 Ignition Module Remove screws securing module to bracket 1 Using a 5 16 hex bit remove screw securing ignition module bracket 7 Remove harness from module Installation is reverse of removal 5 2 2 Transformer Box 2 Disconnect ignition cable from module Needle nose pliers may be needed to accomplish this 1 Using a 5 16 hex bit remove 4 screws securing Cabinet Rear Bottom Cover and remove cover 3 Slide module bracket toward you and then to the right or left away from the cabinet side This will disengage the two tabs at the rear of the bracket allowing removal of the module and bracket Disconnect the 6 position electrical connector 2 Unplug Electrical Connectors from the rear of Remove the module and bracket from the the Transformer Box fryer L22 236 Rev 2 06 11 19 SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 3 Using a 5 16 hex bit remove the screws from the top and bottom of the transformer Box 4 Slide Transformer Box toward front of fryer disengaging tab from top f
32. el retention ears 1 Remove Pump Box See Section 6 1 2 3 Disconnect wires to circuit breaker noting location for reassembly 2 Remove transformer from Pump Box using Phillips screwdriver and needle nose pliers 3 Disconnect wires to pump transformer noting location for reassembly L22 236 Rev 2 06 11 37 SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 6 2 Drain Line 6 2 1 Drain Line Removal 1 Loosen band clamp s using 7 16 hex bit Slide band gasket and clamp to separate joint E 2 Remove screws securing Drain T s and Elbows to drain valve s using 9 16 socket 38 L22 236 Rev 2 06 11 SERVICE 7 Schematics 7 1 Control Schematic AMINO 900 AINO 1337 TMINO GOO ON ES 8 0334 1v3H ii Lvl dd N EV A en MINI N E 0184 L N18 AJ m A 431 Lud CIS E
33. ers loosen and disconnect return tubing flare fittings to adjacent fryer s On split tanks leave tubing between the two tank halves intact This can be removed when tank is out of cabinet AE 13 Remove screws securing splashback to cabinet rear using 5 16 hex bit 28 L22 236 Rev 2 06 11 WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 14 Remove screws securing splashback to rear of tank using flat bladed screwdriver and remove splashback 15 Remove front panel bezel bottom rail heat shield and top deck See Section 5 1 4 2 UF 16 Remove channel strip s between adjacent fry tank s 17 Cut sealant bead between adjacent fry tank s using utility knife 18 Remove 4 tank to cabinet mounting screws at front of tank using 5 16 hex bit MGII and MG2T GAS FRYER SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 4 Remove 6 burner rack mounting screws from tank using 5 16 hex bit Remove burner rack from tank s 19 Remove 2 tank to cabinet mounting screws at rear of tank using 5 16 hex bit 5 4 screws and nuts securing flue to tank using 5 16 hex bit and 3 8 socket or box 20 Remove fry tank from cabinet 5 4 5 Tank Disassembly 6 Forfilter equipped fryers disconnect return 1 Remove probe clamp s from tank s using val
34. k regulated gas pressure at burner manifold Verify pressure matches dataplate information Adjust as necessary Main gas supply is off Verify main gas supply is turned on Verify gas shut off valve is open Fuse F1 blown Defective Controller Gas shut off valve yellow handle is closed Low gas pressure Computer Controller Gas shut off valve yellow handle is hi yellow handle is in line with the gas shows IGNITION closed line FAILURE and ABI Gas valve is not turned on Turn manual gas valve to ON Quick disconnect not properly Verify quick disconnect is properly connected seated L22 236 Rev 2 06 11 7 SERVICE Allow appliance to cool and reset High temperature limit has tripped high temperature limit Check and replace if defective Turn fryer off and back on again to reset ignition module If lockout Computer Controller lgnition Module has locked out recurs check for proper pilot flame shows IGNITION and module operation Replace if FAILURE and defective alarms cont Check regulated gas pressure at burner manifold Verify pressure matches dataplate information Adjust as necessary Adjust flue baffle to provide proper Excessive Oil Leve 0 level should never exceed MAX line Drain extra oil from tank Repeat heat up without adding oil Quick disconnect not properly Verify quick disconnect is properly connected seated Check regulated gas pressu
35. meter into the circuit Observe proper polarity if the meter needle goes below 0 reverse the leads The flame current reading must be 1 0 uA or greater 0 15 uA or greater for CE units Remove the pilot adjustment screw cap screw B to expose the pilot adjustment screw Turning the pilot adjustment screw clockwise decreases the size of the pilot flame and flame sense current Turning the pilot adjustment screw counterclockwise increases the pilot flame size and the flame sense current Once the pilot flame has been adjusted properly replace the pilot adjustment screw cap screw and remove the microammeter Burner Pressure Tap Pilot Adjustment Screw Cap ON OFF Knob Burner Pressure Regulator Adjustment Screw Cap Inlet Pressure Tap The gas valve is equipped with a pressure regulator to regulate burner pressure Regulated pressure should be the same 0 1 W C 25mbar 2 as that marked on the data plate on the inside door of the appliance To measure regulated gas pressure connect an accurate pressure gauge range of 0 16 W C 0 39 85mbar 0 3 98kPa in 0 1 25mbar 2 increments or manometer to the burner pressure tap A To adjust the pressure remove the burner pressure regulator adjustment screw cap and with a flat head screwdriver adjust the regulator screw until the proper burner NON CE COUNTRIES Gas Type Gas Pressure W C Orifice Tip Size and Burner Pressure for CE Countries
36. n position Filter motor thermal overload Push the red reset button on Pump return handle is pulled motor out but no pumping sound Filter power cord is Check the power cord at the can be heard unplugged or loose rear of the fryer entrance box and at the rear of the pump box and verify that the power cords are pushed all the way into their receptacles Check that the switch is tight switch and has the correct gap Replace if defective Oil is returning to the tank completely connection tube defective the oil being returned to the 5510 completel connection tube defective Blue drain valve handle not Verify that drain valve handle Drain valve is closed but the completely closed is completely closed computer controller still Improperly adjusted or Check that the switch is tight displays DRAINING defective drain switch and has the correct gap Replace if defective L22 236 Rev 2 06 11 9 SERVICE 3 Component Troubleshooting 3 1 Temperature Probe Electrical resistance of the Temperature Probe RT1 changes as the temperature changes As temperature rises the probe s resistance decreases If the probe is suspect check its resistance and the oil air temperature at 60 16 80 27 100 38 120 49 140 60 139 055 84 644 53 146 34 328 22 755 GATI 330 166 335 168 340 171 345 174 350 177 TEMP RESISTANCE TEMP RESISTANCE OHM 0 F C OHM 0 160 71
37. ng Probable Causes Corrective Actions No power to appliance Check main building power supply Circuit Breaker tripped Reset circuit breaker Connect power cord Check power cord where it enters the rear of the Power Cord loose not connected fryer s entrance box Verify that it is plugged all the way into the receptacle Check Wire Reduction Board If AC Lamp is not lit check F1 fuse If fuse Computer Controller is blown replace with a 2 5 A fast display does not light acting fuse If AC Lamp on Wire Reduction Board is lit check for 24 VAC between pins 1 and 2 on J P 1 If voltage is present and computer display is not lit controller is defective Check for shorts on controller outputs prior to replacing controller Computer is in Melt Cycle Allow time for unit to heat up Main gas supply is off Verify main gas supply is turned on Verify gas shut off valve is open yellow handle is in line with the gas line Gas valve is not turned on Turn manual gas valve to Computer Controller Quick disconnect not properly Verify quick disconnect is properly shows MELT and Connected seated heats slowly or not High temperature limit has tripped Reset high temperature limit Check at all and replace if defective Turn Fryer off and back on again to reset ignition module If lockout Ignition Module has locked out recurs check for proper pilot flame and proper module operation Replace if defective Chec
38. o 24VAC to operate the heat control circuit e f Fuse F1 on the Relay Board A4 is good the AC POWER LED illuminates The computer is supplied with 24VAC and if the drain valve handle is closed the proximity switch 151 supplies 24 to the drain valve interlock Input at the Computer Controller reference connector J P1 pin 5 e The Computer Controller A1 is turned ON by pressing the button e The Side On Relay K3 will be energized closing the circuit and the S O LED on the Relay Board illuminates If the High Limit HL1 is NOT tripped the ignition module is supplied with 24VAC at terminal 6 24VAC The ignition module generates a 24VAC output from terminal 3 PV to the PV terminal on the Gas Valve V1 and generates a spark at the igniter E2 When the pilot has lit and the ignition module has proven the pilot flame it will have a 24VAC output at terminal 1 MV resulting in 24VAC at connector J P32 2 on the Relay Board The Heat Demand Relay K1 on the Relay Board will control the 24VAC supply to the gas valve when the controller calls for heat Note When the Computer Controller is on the pilot should always remain lit e When the Computer Controller calls for heat he Heat Demand Relay is energized supplying the Gas Valve with 24VAC and the LED on the Relay Board illuminates This also supplies the Computer Controller with a heat feedback signal at connector J P32 pin 6
39. onoxide is a clear odorless gas that can cause suffocation MGII Full and Split Tank Gas Fryer TABLE OF CONTENTS 1 THEORY OF OPERATION da TEES aaa a aa ag 5 HEATING SYSTEM M Tex 5 1 2 SYSTEM e a E E 5 1 3 RELAY SYSTEM U S CANADA UNITS ONLY 5 14 TEMPERATURE PROBE sanesa ua aana NA aa a ea da aa aa a 5 1 9 FILTER SYSTEM asas 6 2 TROUBLESHOOTING 2 0 0 4 2 1 7 21 FRYER TROUBLESHOOTING 7 2 2 FILTER TROUBLESHOOTING awi asun wada wau e 9 COMPONENT TROUBLESHOOTING 10 TEMPERATURE PROBE DS 10 3 2 GAS VALVE e asa aa aja ahaaa Ba ahaaa ala aapa ana a 10 9 92 HIGH EIMS mcin aaa aia aaa a tale aaa aa aa SA gala aaa aa aa a a a aa Ja ala aaa a Da aa aa a a ga dal a ad aba 11 3 4 DRAIN VALVE amp RETURN VALVE 11 3 9 TRANSFORMER ERE 11 3 6 IGNITION MODUL EE t 11 Sef RELAY BOARD E Sse Da a aa NTEN E a aa Ba a TA AD MIN A aa E SA 12 39 8 GOMPUTER CONTROLLER esci daa aa IU a a Na a a da DI III MI M IUE 13 2 9 F
40. power cord and it is damaged it must be replaced by a Pitco Authorized Service and Parts ASAP company technician or a similarly qualified person in order to avoid a hazard WARNING The power supply must be disconnected before servicing maintaining or cleaning this appliance WARNING The appliance is NOT jet stream approved DO NOT clean the appliance with a water jet 2 L22 236 Rev 2 06 11 WARNING DO NOT attempt to move this appliance or transfer hot liquids from one container to another when the unit is at operating temperature or filled with hot liquids Serious personal injury could result if skin comes in contact with the hot surfaces or liquids WARNING DO NOT sit or stand on this appliance The appliance s front panel tank splash back tank cover workshelf drain board is not a step Serious injury could result from slipping falling or contact with hot liquids WARNING NEVER use the appliance as a step for cleaning or accessing the ventilation hood Serious injury could result from slips trips or from contacting hot liquids WARNING The oil shortening level should NOT fall below the minimum indicated level line at any time The use of old shortening can be dangerous as it will have a reduced flash point and be more prone to surge boiling WARNING The contents of the crumb catch and or filter pan of any filter system must be emptied into a fireproof container at the end of each day Some food pa
41. pulsing can often be heard when the burners fire The baffle can be adjusted as follows 1 Pull the fryer out from under the ventilation hood 2 Loosen the 2 screws securing the baffle slide plate move the plate to a more closed position and retighten the screws 3 Reinstall fryer under ventilation hood 4 Recheck burner operation 5 Repeat as necessary The burners should be rechecked after baffle adjustment If there is pulsing or the flame is lifting off the burner face the baffle is still too far open If there is significant flame roll out on ignition then the baffle is too far closed The baffle should be set in the most open position that allows for stable non pulsing non lifting burner operation WARNING If the baffle can not be adjusted properly the facility must have the ventilation system checked immediately to be sure that it is within normal operating specifications After the ventilation system is corrected the baffle setting must be rechecked Failure to correct ventilation problems or properly set flue baffles will result in extremely poor fryer operation and possible equipment damage 14 L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE 4 CE GAS TABLE Refer to the following table for gas specifications for the country of use If the country of use is NOT listed refer to the information stamped on the data plate 5 2 5 E 2 5 z 8 8 g i
42. re at burner manifold Verify pressure matches dataplate information Adjust as necessary Improper Flue Baffle Setting n to provide proper Burners require cleaning Remove and clean burners Oil Temperature is Refer to McDonald s PM Card hotter or colder than emper FRO14 shown by Computer ifi Contact a qualified service Controller Defective Temperature Probe ecinic an Computer Controller ill Close blue drain valve handle displays DRAINING 20590 i Improperly adjusted or defective Check and Adjust Replace as or TURN OFF drain switch needed Computer Controller displays PROBE Open or shorted temperature probe Check and replace if defective FAILURE Low gas pressure Excessive Recovery Time Recovery Time exceeds 2 25 Standard Low gas pressure 8 22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE Drain valve is not fully open Press down on the drain valve handle and verify that it is fully open Use the clean out rod to clear the drain valve opening If this does not clear the blockage 2 2 Filter Troubleshooting Drain Valve is open the oil ijs PTA iS plugged with debris draining slowly or not at all close the drain valve Remove drain to clear blockage Red return valve handle is Pull on the red return valve completely open handle to make sure it is completely open or in the off position oress it to the o
43. rescribed limits it is defective and should be replaced Once tripped the switch cannot be reset until the oil has cooled to approximately 400 F 204 C If the switch cannot be reset by pressing the red reset button after the oil has cooled it is defective 3 4 Drain Valve amp Return Valve Switches These switches LS1 and LS4 are magnetically actuated proximity switches When the Drain Valve Handle is moved to the open position the Actuator magnet will move away from the switch causing the Drain Valve Switch LS1 to open When the Drain Valve is closed the switch will close Opening the Red Return Valve Handle will close the proximity switch causing the Pump Run Relay K5 to be energized The pump will begin to pump Closing the return valve handle will open the proximity switch causing the relay to de energize and the pump will stop pumping These switches can be checked with an Ohmmeter When the switch is closed you should have continuity near 0 Ohms The normal gap between the Actuator magnet on the valve handle and the Sensor switch is 1 6 v4 3 6mm 3 5 Transformer The Transformer is a Class 2 step down multiple tap primary to 24VAC secondary device The transformer can be checked by reading the input and output voltages A quick check for transformer 24 output can be done at the relay board behind the front panel The AC LED is illuminated if the F1 fuse is good and the board is receiving 24
44. robe and controller for a short e If display reads DRAINING TURN OFF this indicates that there is no 24VAC input at pin 5 DVI Input Verify that the drain valve is closed check the proximity switch on the drain valve turn the fryer off then turn the fryer on L22 236 Rev 2 06 11 13 SERVICE D 3 9 Flue Baffle The McDonald s Gas Fryers are typically installed in a direct coupled ventilation hood They are shipped from the factory with adjustable baffles installed in the flue of each fryer Upon installation these baffles must be adjusted to provide proper operation within the ventilation hood WARNING Failure to properly adjust the flue baffles may result in improper operation poor temperature recovery poor ignition pilot extinction and damage to the appliance If the appliance is not installed in direct coupled hood system e g canopy hood the flue baffles must be removed before installation for proper operation The fryer will ship with the baffle set in the normal position for most McDonald s Universal hoods McDonald s direct coupled hoods manufactured after 1995 are of the Universal type If upon installation under the hood the burner flame is found to be lifting or pulsing the draw of the hood may be higher than nominal and adjustment of the flue baffle may be necessary The flame can be viewed by looking through the burner shield If the flue baffle requires adjustment
45. ront of mounting bracket 5 2 3 Transformer 3 Remove nuts securing box to caster bolts using a 7 16 hex socket 5 2 5 Hood Relay North America Only 1 Remove Cord Entrance Box See Previous Section 1 Remover Transformer Box from Fryer See previous section 2 Remove 2 screws securing transformer to box Disconnect wires from transformer noting location of wires for reinstallation 5 2 4 Cord Entrance Box 2 Remove Hood Relay from Box using 3 8 wrench to hold nut while removing mounting screw using Phillips screwdriver 3 Disconnect wires from relay noting location of wires for reinstallation 1 Remove plug guard from cord box using a 5 16 Hex socket 20 L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE 5 3 Gas Train WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK WARNING DISCONNECT APPLIANCE FROM GAS SUPPLY OR SHUT MANUAL GAS VALVE PRIOR TO SERVICING GAS TRAIN 5 3 1 Manual Gas Shutoff 2 Loosen and remove pilot tubing from gas valve using 7 16 wrench 3 For Full Tank Gas Valves 1 Close Manual Gas Shutoff in Gas Supply Piping by rotating yellow handle until it is perpendicular to gas line a Loosen and remove gas supply tubing at bottom of valve using 1 1 16 open end wrench on supply tubing end connector and 15 16 open end wrench on brass male flare fitting at base of valve Br c b
46. rticles can spontaneously combust if left soaking in certain types of oil or shortening WARNING Completely shut the appliance down when oil shortening is being drained from the appliance This will prevent the appliance from heating up during the draining and filling process Serious injury can occur WARNING This appliance is intended for indoor use only WARNING DO NOT operate appliance unless all panels and access covers are attached correctly WARNING It is recommended that this appliance be inspected by a qualified service technician for proper performance and operation on a yearly basis WARNING There is an open flame inside this appliance The unit may get hot enough to set nearby materials on fire Keep the area around the appliance free from combustibles WARNING DO NOT supply the appliance with a gas that is not indicated on the data plate If you need to convert the appliance to another type of fuel contact your Equipment Supplier or a Pitco Authorized Service and Parts ASAP Company WARNING DO NOT use an open flame to check for gas leaks WARNING If gas flow to appliance is interrupted or pilots extinguish wait 5 minutes before attempting to relight the pilot to allow any residual gas in appliance to dissipate WARNING Ensure that the appliance can get enough air to keep the flame burning correctly If the flame is starved for air it can give off a dangerous carbon monoxide gas Carbon m
47. see Section 4 0 MG2 MG2S 55 4 0 55 4 0 10 L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE pressure is reached Turning the screw clockwise will increase the burner pressure Turning the screw counterclockwise will decrease the burner pressure When the pressure is correct replace the regulator adjustment screw cap NOTE A properly sized and installed gas line will deliver a minimum supply pressure of 7 0 W C 17 4mbars 1 74kPa natural gas or 13 0 W C 32 4mbars 3 25kPa propane to all appliances connected to the supply line operating simultaneously at full demand If regulated gas pressure cannot be achieved with all appliances in the store running there may be a building gas supply deficiency 3 3 High Limits The High Limit switch HL1 is a normally closed switch that opens when the temperature at the high limit sensing bulb reaches 450 F 15 F 232 C 8 The high limit can be tested by utilizing the Computer Controller high limit test feature Refer to McDonald s Card 015 for instructions on how to perform this test WARNING This test should be performed by a qualified technician only Monitor the fryer closely This test will cause the oil to heat past the normal operating temperature and can cause damage to the machine and its operator if care is not taken WARNING This test will cause the burners to run continuously If the switch does not open trip between the p
48. stall flue gasket on rear of tank Spray glue may be used to hold gasket in place m 5 Install flue and MG2T GAS FRYER SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK D v 4 iiid 9 6 Attach flue to flue brackets using 5 16 hex bit 9 Apply pipe thread compound or Teflon tape onto tank drain nipple s and 3 8 socket or box wrench to tighten screws and nuts 10 Install drain valve s onto tank nipple s using 7 Clean old gasket material from burner rack face Install new burner gasket onto burner rack Spray glue may be used to hold gasket in place 8 Install burner rack onto tank front Secure burner rack to tank using 6 screws and a 5 16 hex bit On full tanks leave out 2 screws in lower right front of rack On split tanks leave out 2 screws in lower center of rack These screws will be installed when the high limit bracket is installed pipe wrench On full tanks tighten until drain valve stem is facing right On split tanks drain valve stems should face each other 11 Insert probe s from top of tank through fitting s in tank bottom 12 On split tanks install probe clamp using 22 236 Rev 2 06 11 Phillips screwdriver 31 SERVICE 13 Apply pipe thread compound or Teflon tape to pipe threads of fitting Slide probe wires WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER
49. ture Probe The Computer Controller receives temperature readings from the Temperature Probe he Temperature Probe resistance varies with temperature decreasing as temperature rises L22 236 Rev 2 06 11 5 SERVICE 1 5 Filter System Opening the RED filter return valve handle closes the magnetically actuated Proximity Switch L S4 causing the Pump Relay K5 to be energized This allows line voltage to flow to the Filter Pump Motor M1 The Pump Motor begins to run Closing the filter return valve handle will de energize the relay and the Pump Motor will stop running The pump system is equipped with a Circuit Breaker CB1 which de energizes the system and the heat tape if so equipped in the event of over current The Circuit Breaker switch must be in the ON position for the pump and heat tape to operate The return piping system may be provided with optional Heat HTH1 to prevent solidification of solid shortening The Heat Tape is low wattage and is on constantly to maintain liquid shortening in the line The Filter Pump Motor M1 is equipped with a thermal overload In the event of over temperature of the pump motor the thermal overload opens shutting off the pump Once the pump motor has cooled it can be reset by pressing the red button at the end of the motor housing L22 236 Rev 2 06 11 MGII and MG2T GAS FRYER SERVICE 2 Troubleshooting 2 1 Fryer Troubleshooti
50. ve s from tank fitting using 1 1 8 wrench Phillips screwdriver on valve and 1 wrench on tank fitting 2 Remove high limit assembly s from tank See Section 5 4 2 7 For split tank fryers disconnect the return tubing from one of the two return valves 3 Remove drain valve s from tank using pipe wrench 8 Remove return valve fitting if so equipped from tank using 1 wrench L22 236 Rev 2 06 11 29 SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 5 4 6 Tank Assembly 1 For filter equipped fryers apply pipe thread compound or Teflon tape to return valve fitting s Install return valve fitting s into rear of tank using 1 wrench I PD 2 Install return valve s onto return valve fitting s if so equipped a For split tanks leave return valves slightly loose so that return tubing between them can be installed Connect tubing loosely to 4 both valves b Rotate valves into position using a large Phillips screwdriver inserted into the open port on the return valves 30 L22 236 Rev 2 06 11 c Tighten the return valves using 1 1 8 wrench on return valve and 1 wrench on tank fitting d Tighten the return tubing between the return valves using a 1 1 16 wrench For non filter fryers ensure gt plug is installed in rear tank fitting s For split tanks in
51. yer 24 L22 236 Rev 2 06 11 and MG2T GAS FRYER 5 4 Tank SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 5 4 1 Probe Replacement 1 Completely drain fry tank into a suitable container 2 Disconnect probe electrical plug P7 from jack J7 located above ignition module 3 Remove 2 screws securing probe bulb clamp inside tank using Phillips screwdriver Remove bulb clamp 10 11 12 13 14 22 236 Rev 2 06 11 Loosen Ferrule Nut on probe fitting underneath tank using 7 16 wrench Unscrew fitting from bottom of tank using 9 16 wrench Pull probe out through coupling in tank bottom Install new probe from top of tank sliding wires and probe through probe fitting Adjust probe height so that it rests on tank tapping pad Apply pipe thread compound or Teflon tape to pipe threads of new fitting Slide wires through new fitting one at a time Tighten fitting into tank coupling using 9 16 wrench Tighten probe fitting ferrule nut using 7 16 wrench Install probe wires with pins into plug connector Plug probe plug into jack J7 Reinstall probe bulb clamp securing probe and high limit bulb to tank tapping pad If necessary bend probe using flat bladed screwdriver to prevent contact between probe sheath and tank heat tube Check for leaks at fittings after tank has been refilled 25 SE
52. yers install return valve handle bracket to burner rack using 5 16 hex bit For filter equipped fryers reconnect return tubing to return valves using 1 1 16 wrench L22 236 Rev 2 06 11 and MG2T GAS FRYER SERVICE WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 13 For filter equipped fryers place return valve 17 handle rod in slot in bracket and install retainer using 5 16 hex bit 14 gas valve to burner manifold using 1 1 16 open end wrench on female brass flare fitting at top of valve and 15 16 open end wrench on male brass flare fitting attached to burner manifold 15 Reinstall pilot assembly See Section 5 3 3 16 Reconnect electrical plugs for high limit P5 probe P7 and drain switch P8 L22 236 Rev 2 06 11 18 19 20 21 22 Reinstall drain valve handle using 11 16 Socket Reinstall filter drain line if so equipped See Section 6 2 1 Fill tank with oil shortening Open Manual Gas Shutoff Valve Leak test all gas fittings with fryer operating after re assembly using an appropriate leak detection fluid Operate fryer and check for oil leaks Correct any leaks found 35 SERVICE 6 Component Replacement Filter 6 1 Pump and Pump Box WARNING SHUT OFF APPLIANCE AND DISCONNECT ALL POWER CONNECTIONS PRIOR TO STARTING ANY SERVICE WORK 6 1 1 Pump Removal 1 Remove
53. your order please about your equipment please contact the contact the Pitco Frialator factory at Pitco Frialator Authorized Service and Parts 603 225 6684 World Wide representative ASAP covering your area or Website Address www pitco com contact Pitco at the numbers listed to the left MAILING ADDRESS P O BOX 501 CONCORD NH 03302 0501 SHIPPING ADDRESS 10 FERRY ST CONCORD NH 03301 L22 236 Rev 2 06 11
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