MG-2812T Manual - Perma Pure LLC
Contents
1. EN 3AMPLE INLET G 316 COMPRESS ONE SB TEAM INLET IP 0 COIL STEAM RIES MEMBRANE DRYER DRAIN COMPRESSION PERMA PURE INC RUMENT AIR INLI FEMALE FEMALE Diagram 4 MG 1228 Steam System Mini GASS User Manual 31 Probe INN Accumulator Sample a Outlet Diagram 5 MG 1228 with Probe and Blowback Mini GASS User Manual 32 APPENDIX F Z Purge operation System Description The Z Purge option for the MG 2812T Gas Sampling System is based on an industry standard Bebco model 1001A Z purge panel It is intended to allow the general purpose enclosure of the MG 2812T to be used in Class Division 2 hazardous areas While the Z Purge system is not complicated there are a few components that need to be understood to ensure proper and safe operation Located on the front panel of the sampling system is a red alarm indicator light When lit it indicates that the pressure in the enclosure has dropped to an unacceptable level and power should be disconnected from the system The indicator light is controlled by a differential pressure switch that senses the pressure difference between the inside and outside of the enclosure The switch is factory adjusted to turn the alarm light on and internally disconnect power from the sampling system when2. If coalescing is anticipated system should be fitted with automatic filter drain to periodically remove collected liquid mists In most cases these mists will be acid mists Automatic drain is available in vacuum or pressurized style 1 Vacuum Configuration Collected liquid is withdrawn from filter drain port by a vacuum created by an eductor expanding compressed air through a venturi This is done in cycles and controlled by adjustable digital timer that switches a solenoid valve controlling compressed air supply Mini GASS User Manual 7 2 Pressurized Configuration An eductor is not required since a vacuum is not needed to withdraw the sample Therefore condensate withdraw is directly controlled by the solenoid valve Cycle times can be varied and will be dependent on the amount of liquid present in sample 2 5 Sample Pump optional The sample pump draws the sample and supplies it to the analyzer It supplies up to 5 liters per minute of sample The typical pump location is between the filter and the ammonia scrubber The head of the pump will be located in the heated section of the system with the motor located in the control section This configuration keeps pump head at a temperature above dewpoint of the sample preventing condensation from forming 2 6 Nafion Dryer The Perma Pure Nafion membrane dryer is installed downstream of the filter As sample enters the dryer flow splits into a number of small dia
3. S INSTRUMENT ARR INLET Tatoo PS Y P F E D SERIES 24 DRYER Diagram 2 1220 Style System 30 Mini GASS User Manual CARRYING HANDLE PERMA PURE MEMBRANE DRYER SAMPLE OUTLET LOCATED BELOW FRONT PANEL 31688 1 4 NPT FEMALE OR KYNAR 1 4 COMPRESSION FITTING TO SAMPLE PUMP _ HINGE THERMOCOUPI PURGE GAS EXHAUST 1 4 NPT FEMALE COMPRESSED AIR INLET 1 4 FEMALE 60 100 PSIG L SAMPLE INLET 10 W C VACUUM 30 PSIG PRESSURE RANGE 1 4 NPT FEMALE 316 SS OR KYNAR HEATLI DRY PURGE AIR EXHAUST 1 4 NPT FEMALE OR OPTIONAL SE FOR 1 5 Mini G A S S HEATED 1 Gas Analysis Sampling System 14 x 12 FIBERGLASS ENCLOSURE W CLEAR POLYCARBONATE COVER FF 250 SERIES COALESCING FILTER MEMBRANE DRYER PURGE AIR CONTROLS N 700 ELECTRONIC TEMPERATURE CONTROLLER pm N D ELECTRICAL N 110 OR 220 VAC X N 25 N RUBBER FEET N N HEATED BACKPLATE OPTIONAL PURGE AIR HEATLESS DRYER HEATED FIBERGLASS ENCLOSURE LOCATED BELOW FRONT PANEL W CLEAR POLYCARBONATE COVER Diagram 3 MG 2812P Portable System SAMPLE INLET FITTIN 2 PURGE EXHAUST FEMALE
4. Any time the sampling system enclosure pressure falls below the safe range the alarm indicator will light and AC power will be automatically disconnected from the system This can be caused by e Loss of the compressed air supply e Opening either of the sampling system enclosure covers e Any event that causes the sampling enclosure pressure to fall below the Safe range Operation of the sampling system with the Z Purge system disconnected non hazardous areas only In non hazardous areas it is possible to operate the sampling system with the Z Purge system enclosure disconnected The Z Purge feature is effectively disabled by switching the Z Purge over ride switch to the Setup ON position Control system safety interlock The interlock system is present to provide an output signal that can be used internally to stop sample flow via the sample isolation valve or optional internal sample pump This system can also be used to provide an external output to a PLC or other control monitoring system so that the status of the Mini GASS can be monitored Two relays are used to perform this function e Low purge flow relay A differential pressure switch across the purge air ports of the PD dryer senses the flow of purge air and energizes this relay when flow is present A minimum purge flow rate of about 10 lpm is required Below this flow the alarm relay will de energize e Low temperature relay The CAL 3300 temperature
5. CHECK VALVE O CALIBRATION GAS INLET COMPRESSION a WET SAMPLE INLET BLOWBACK AIR INLET 3 COMPRESSION CONDENSATE DRAIN MALE NPT PURGE GAS EDUCTOR gt lt PRESSURE REGULATOR DIFFERENTIAL PRESSURE SWITCH SAMPLE SHUTOFF VALVE NEEDLE VALVE PUMP C D HEATED STACK PROBE FILTER THERMOSTATICALLY CONTROLLED AT 400F HASTELLOY HEAT EXCHANGER COALESCING FILTER FLOWMETER DIGITAL ELECTRONIC TEMPERATURE CONTROLLER DIGITAL DRAIN VALVE TIMER NEEDLE VALVE PRESSURE PRESSURE 4 GAUGE REGULATOR HEATLESS AIR DRYER SOLENOID VALVE PERMA PURE TOLERANCES EXCEPT AS NOTED SCALE DECIMAL REFERENCE 005 INTEGRAL SAMPLING PROBE SYSTEM w DV HD PUMP amp FRACTIONAL PURGE EDUCTOR 51 32 PIPING AND ANGULAR e DRAWING NUMBER 5 EXECUTIVE DRIVE TOMS RIVER GP 8 23 01 INSTRUMENTATION COMPRESSED AIR INLET 1 4 FEMALE NPT DRY SAMPLE OUTLET 1 4 FEMALE NPT O HEATLESS DRYER EXHAUST AIR VENT 1 4 FEMALE NPT O PURGE GAS INLET 1 4 FEMALE NPT WITH OPTIONAL HEATLESS DRYER 60 100 PSIG AIR WITHOUT OPTIONAL HEATLESS DRYER 30 100 PSIG AIR OR NITROGEN 40C DEWPOINT OR BELOW INCORPORATED 08754 MG 0000 01 0c APPENDIX E Mini GASS Drawings SAMPLE INLET SEALING FITTING FORA 1 57 0 0 HEATED LINE SAMPLE INLET FITTING KYNAR 1 4 COMPRESSION SAMPLE FILTER _ FF 250 FG 2 5G N HEATED BACKPLA
6. Connect regulated purge gas supply line to 1 4 female NPT purge inlet port of membrane dryer labeled Instrument Air Heatless Dryer Optional 1 Connect oil free compressed air line to port labeled Purge Gas Inlet An oil coalescing pre filter is recommended 1 4 female NPT bulkhead fitting on bottom of enclosure is heatless dryer purge air exhaust Humid air can be vented to atmosphere or piped to remote location Mini GASS User Manual 12 c Filter Drain Connection Connect line from eductor outlet to designated collection exhaust basin containing acid absorption media to prevent release of exhaust to surrounding 1 4 1 0 tubing can be used for runs up to 10 feet or larger I D tubing for longer exhaust lines Line should not restrict purge flow d Purge Exhaust Purge exhaust may contain liquid water A line can be connected from purge outlet to remote area if desired Line should not restrict purge flow 1 4 1 0 tubing can be used for runs up to 10 feet or larger I D tubing for longer exhaust lines e Purge Eductor Inlet Connection Connect air supply line to compression fitting labeled Instrument Air f Steam Connection Optional Refer to Figure 7 1 Insulate supply line to steam control valve 2 Insulate supply line between valve and steam coil 3 Supply low pressure steam 50 psig max to steam coil Do not exceed this pressure or overheating may occur Outlet end of steam coil l
7. ALARM RELAY 2 2 E E ZO 21120271 loooo lt HS Sk E Sk Q Z xx N 22212221 99 x amp DE ENERGIZES WHEN PURGE RB I AIR FLOW IS LOW ll c c p NN TI SETER DE ENERGIZES WHEN MAS 90 s ioc R E E TEME IS EON MALE BULLET CONNECTOR 100878 ELH LRR TS FEMALE BULLET CONNECTOR 100879 d ALARM RELAY ALARM RELAY FORK TYPE CONNECTOR 101509 R Hf 3 16 FEMALE FLAG CONNECTOR 100924 N UL GT 1 4 FEMALE FLAG CONNECTOR 100923 4 P 1 4 STRIPPED INSULATION NA 6 CONDUCTOR CABLE 4101433 NOTES SIZE 18 AWG WIRE AWM TYPE 1007 80 C TEMPERATURE RATING BOBW G V X HEAT SHINK X LONG R L WHITE WIRE IS INDICATED T AS BLACK SEE WIRING HARNESS FUSE POWER DWG MG 1228 04 14 SAMPLE VALVE FOR WIRE GROUPING AND LENGTHS i lt lt m ALARM RELAY TERMINAL BLOCK e RR R 100366 NN 9 HEAT 5 SHIELDING d MAINS POWER FERRITE BEAD z TERMINAL BLOCK TEMPERATURE LOW PURGE LOW 4100365 R 4 THERMOCOUPLE CONTROLLER R REI L Sv M 242 Ke z v RED SSR OUTPUT a SSR OUTPUT MAINS POWER LINE 1 fO O BRN Gildas sss 2 ALARM RELAY 110 220 VAC LINE 2 O O BLU L i BLU NEUTRAL N 50 60 HZ GRN GROUND O C ORG LINE L bw 16 BUTT CON
8. OUTLET SAMPLE DEW POINT With PD 200T 24SS dryer With PD 100T 24SS dryer With PD 50T 24SS dryer SOLUBLE GAS REMOVAL RATES MAXIMUM GAS SAMPLE INLET PRESSURE MINIMUM GAS SAMPLE INLET PRESSURE WITHOUT PURGE EDUCTOR OPTION WITH PURGE EDUCTOR OPTION GAS SAMPLE INLET FITTINGS GAS SAMPLE OUTLET FITTINGS AIR REQUIREMENTS ELECTRICAL REQUIREMENTS FUSE ENCLOSURE DIMENSIONS MG 1228 MG 2812P MG 1220 OPERATING ENVIRONMENT 0 TO 10 LITER MIN 250 F W SST FILTER 230 F W KYNAR FILTER 30 26 F 4 C at 10 L MIN 12 F 12 C at 5 L MIN 12 F 25 C at 2 L MIN 36 F 2 C at 10 L MIN 26 F 4 C at 5 L MIN 6 F 15 C at 2 L MIN 42 F 5 C at 10 L MIN 34 F 1 C at 5 L MIN 22 F 6 C at 2 L MIN NO NO2 0 loss 02 0 loss 2 0 1055 25 0 1055 20 PSIG 5 H2O VACUUM 10 H2O VACUUM 1 4 or 3 8 TUBING FITTINGS 1 4 or 3 8 TUBING FITTINGS PURGE AIR 40 C DEW POINT MAXIMUM ONE 1 CFM 110 220VAC 50 60Hz 5 0A 2 5A 475 WATTS 5 AMP BUSS TYPE AGC OR EQUIVALENT NEMA 4X FIBERGLASS WITH POLYCARBONATE COVER 12 W x 28 H x 7 DEEP 28 W x 12 H x 7 DEEP 12 W x 20 H x 7 DEEP 20 C TO 40 C AMBIENT TEMP 0 TO 95 R H Mini GASS User Manual 20 SOLID STATE RELAY A BACKPLATE HEATER Cow PURGE 1 SE Stk AIR row LOW TEMP PURGE PRESS SWITCH al ALARM RELAY
9. 4 7 for opposite end Parts List DESCRIPTION COUPLING SHELL TUBE SHELL TUBE SEAL VITON SCREW 10 24 x 3 8 SS DRYER ELEMENT ELEMENT HEADER SEAL VITON a 2 UON N N N MN Ax k e 4 1 6 7 3 2 Figure 13 Mini GASS User Manual 23 APPENDIX C 1 Replacement Parts List for Mini GASS Part MG DTC MG TCS MG SSR MG FM MG PR MG DPS MG PG 0 30 MG VG 0 60 SV K10 SV K20 FF DCV DVV B10 DVV B20 DVP K10 DVP K20 MG DVT MG DC MG 1412 HB MG 2112 HB PD 50T 24E PD 100T 24E PD 200T 24E FF 250 E 2 5G FF 250 G FF 250 3 AS 200 08 EB MG PUMPKIT SP 270E Description Digital Temperature Controller Single Channel J Type Thermocouple Solid State Relay Flow Meter purge gas 0 60 L min Pressure Regulator purge gas or eductor Differential Pressure Switch for Purge Flow Detection Pressure Gage purge gas 0 30 PSI Vacuum Gage purge eductor 0 30 Hg Safety Interlock Solenoid Valve Kynar 110V 60Hz Safety Interlock Solenoid Valve Kynar 220V 50Hz Drain Check Valve Polypropylene for vacuum drain Drain Solenoid Valve Brass for vacuum drain 110V 60Hz Drain Solenoid Valve Brass for vacuum drain 220V 50Hz Drain Solenoid Valve Kynar for pressure drain 110V 60Hz Drain Solenoid Valve Kynar for pressure drain 220V 50Hz Drain Valve Timer Mounting Clamps for Dryer specify dryer model Backplate with Heater for Enclosure 1412 Backplate with
10. Heater for Enclosure 2112 50 Tube dryer replacement element 24 long includes o rings 100 Tube dryer replacement element 24 long includes o rings 200 Tube dryer replacement element 24 long includes o rings Replacement filter element Replacement glass shell Replacement O ring set set of 3 Media replacement for ammonia scrubber bulk supply 5 fillings Pump repair kit Teflon diaphragm Ceramic Filter Element for MG 1228 Mini GASS User Manual 24 APPENDIX D 1 Flange Mounted with Integral Sampling Probe and Filter Blowback Installation Flange mounted Mini GASS is designed to be stack mounted on 2 3 or 4 pipe flange integral sample probe and filter eliminates need for a heated umbilical line to connect stack gas sampling probe to sample conditioning system The Mini GASS system is attached directly to sample port flange by following the steps below Attach flange to sampling port using appropriate sized gasket and bolts Align flange holes with turnbuckle anchor at bottom Install four appropriate sized bolts and hand tighten all four bolts evenly Tighten with wrench see Figure 14 Install sampling probe pipe into pipe flange by inserting non threaded end of probe pipe through flange see Figure 15 Probe should extend into the center of the stack and pointing slightly downward to allow any entrained liquid to drain back into the stack Tighten probe pipe into flange with wrench Attach one
11. controller has an alarm function that is used to energize this relay when the system is operating at normal temperature The actual point at which a low temperature alarm is triggered is Set point minus 5C For instance if the temperature controller is set at 90C the alarm relay will de energize at 85C The interlock system is used in the Mini GASS to control the sample gas isolation valve or optional internal sample pump by simply supplying power to the interlock valve coil or sample pump motor via the alarm relays Each of the relays is of a DPDT or double pole double throw design This just means that there are two sets of normally open normally closed N O N C contacts in each relay One set of contacts is used internally and one set of contacts is provided to allow connection to an external system e Refer the drawing MG 1228 04 12 Internally these relays are wired in series to supply power to the sample isolation valve or sample pump To accomplish this switched line voltage 115 230VAC Orange wire is supplied to the common term 5 connection of the low purge flow relay From the normally open term 3 connection of the low purge flow relay a brown wire connects to the common term 3 connection of the low temperature relay From the normally open term 3 connection of the low temperature relay a gray wire connects to the sample isolation valve or sample pump This allows the valve to open or the pump to start only if both relay
12. the pressure indicated on the Z purge gage falls below the Safe range Located on the front panel of the Z Purge enclosure are the two main components of the system the adjustable pressure regulator that controls purge gas flow to the sampling system enclosure and the pressure gage that indicates when the pressure in the sampling system enclosure is in an acceptable or Safe range Two connections between the Z Purge and sampling system enclosures are required to 1 allow purge air flow to the sampling system enclosure and 2 communicate the sampling system enclosure pressure level back to the Z Purge gage The second connection also allows the purge air flow to be vented through a metering orifice to the atmosphere System Setup 1 Connect a 10 125 psig compressed air source to the 1 4 NPT port on the right side of the Z Purge enclosure 2 Connect the two lines from the Z purge enclosure to the sampling system enclosure 3 Make all appropriate plumbing connections to the sampling system enclosure 4 lf it is necessary to adjust or check the temperature controller setting a Z Purge over ride switch is provided This switch is located beneath the sampling system control panel When placed in the Setup ON position power is supplied to the sampling system control circuit regardless of the state of the Z Purge pressure switch Once setup of the sampling system has been completed this switch must be returned to the Z P
13. the use and application to which Buyer puts the product for which Buyer may recommend the use or application of the product by others and 3 the characteristics specifications and or properties of the product may be affected by the processing treatment handling and or manufacturing of the product by Buyer or others and Seller takes no responsibility for the nature or consequence of such operations or as to the suitability of the product for the purposes intended to be used by Buyer or others after being subjected to such operations SELLER MAKES NO OTHER WARRANTY EXPRESS OR IMPLIED OF THE PRODUCT SUPPLIED HEREUNDER INCLUDING WITHOUT LIMITATIONS IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE AND ALL SUCH WARRANTIES ARE HEREBY EXPRESSLY EXCLUDED SELLER SHALL HAVE NO LIABILITY FOR LOSS OF PROFITS OR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES UNDER ANY CIRCUMSTANCES OR LEGAL THEORY WHETHER BASED ON NEGLIGENCE BREACH OF WARRANTY STRICT LIABILITY TORT CONTRACT OR OTHERWISE SELLER SHALL IN NO EVENT BE LIABLE IN RESPECT OF THIS OR DER AND OR PRODUCT DELIVERED ON ACCOUNT OF THIS ORDER FOR ANY AMOUNT GREATER THAN THAT PAID TO SELLER ON ACCOUNT OF THIS ORDER Mini GASS User Manual 5 1 Introduction Perma Pure Mini GASS sample pre conditioning systems are designed to prepare gas samples for analysis The Mini GASS system will remove particulates mists and water vapor without removing the compounds being
14. E INLET u DRY SAMPLE OUTLET COALESCING MEMBRANE DRYER OPTIONAL FILTER AMMONIA SCRUBBER BACKPLATE HEATER IGITAL ELECTRONIC A TEMPERATURE CONTROLLER NEEDLE VALVE FLOWMETER ieee Picea i a s a r eye ents Pe as EIL 1 HEATLESS DRYER N EXHAUST AIR VENT I PURGE GAS INLET DIGITAL DRAIN VALVE TIMER OB 1 1 1 1 D d SOLENOID VALVE 1 EDUCTOR 1 PRESSURE PRESSURE GAUGE A WITH OPTIONAL HEATLESS DRYER HEATLESS 60 100 PSIG AIR AIR DRYER Fa ee tr tal J WITHOUT OPTIONAL HEATLESS DRYER B S DRY OPTIONAL DRAIN OPTIONAL HEATLESS 39 100 FSIG AIR OR NITROGEN VALVE ASSEMBLY DRYER ASSEMBLY L J CONDENSATE DRAIN Figure 4 Mini GASS User Manual 10 3 2 Electrical Connection Mini GASS Model 1220 1214 and 2812P Portable have a power cord and plug for 110 VAC and a power cord with pigtail wires for the 220 VAC version Mini GASS Model 1228 and 1235 Connect power supply line to terminal block located on the backplate of the control enclosure inside 1 2 conduit hub Refer to Figure 5 for color coding reen Connect Ground Earth here Brown Blue Connect Line here Connect Neutral or Line L2 here Figure 5 Alarm Relays The SIVS2 has a 6 pole terminal block that will allow for field wiring of alarm relays for connection of external alarm equ
15. EMBLY ELEMENT HEADER SEAL VITON Figure 10 Mini GASS User Manual 22 2 PD Dryer with One Part Molded Fitting TO DISASSEMBLE DRYER Tools Needed Phillips head screwdriver unsharpened pencil with eraser 1 Loosen locking screws on both ends of dryer 2 Insert eraser end of pencil into one sample port until it rests on tube header face Refer to Figure 11 3 Hold dryer vertically and place other end of pencil down onto a hard slip resistant surface 4 While supporting shell tube push lower end fitting down Tube Header with consistent pressure until it slips off shell tube Do not attempt to pull fitting from shell tube doing this Figure 11 is likely to damage dryer element tubing Repeat steps 2 4 for other end Remove one o ring from tube header Pull tube element from opposite end of dryer Refer to Figure 13 Tool Needed Phillips head screwdriver i Sample Port 1 Install one thick o ring onto grooved tube header 2 Slip opposite tube header into dryer shell Check for Alignment 3 Install other thick o ring onto groove 4 Push one thin o ring into groove inside coupling for SS Figure 12 and AL shells slip o ring on shell across two holes Firmly push coupling over tube header Align purge port with hole shell tube Refer to Figure 12 Tighten locking screws until underside of screw head contacts top of boss Repeat steps
16. Mini GASS Gas Analysis Sampling System User Manual 8 Executive Drive Toms River N J 08755 Phone 800 337 3762 732 244 0010 Fax 732 244 8140 PERMA PURE e mail info permapure com Web Site www permapure com TABLE OF CONTENTS T 6 Min Pp GASS GOMPONONIS 2 1 Probe Optional 2 2 Probe Blowback Optional 2 3 Filtration 2 4 Automatic Filter Drain Optional 2 5 Sample Pump Optional 2 6 Nafion Dryer 27 Ammonia Scrubber Optional 2 8 Purge Air Dryer Optional 2 9 Purge Air Eductor Optional 2 10 Z Purge Optional 10 3 1 Mounting dud Electrical Connection 3 3 Plumbing a Sample Connection b Purge Connection c Filter Drain Connection Optional d Purge Exhaust e Purge Eductor Inlet Connection Optional f Steam Connection Optional Start Up rece 14 4 1 Setup Check 4 2 Automatic Filter Drain Control Optional 4 3 Temperature Control a PID Electronic Temperature Control b Steam Temperature Control c Safety Interlocks SIS2 SIVS2 4 4 Preheating the System SysiBm Fine Tu i 0 222222 cite c mass E ENE EREE MIR eR 17 5 1 Steam Heated Systems 5 2 Electrically Heated Systems MAINTENANCE u aa a a a u a asua asua 18 6 1 Filters 6 2 Drye
17. NECTOR 101505 12 BUTT CONNECTOR 101506 2 PLACES PERMA PURE INCORPORATED EXCEPT AS NOTED EXECUTIVE DRIVE TOMS RIVER 08754 DECIMAL REFERENCE SCALE DRAWN BY P DATE B PIN RELAY 005 STANDARD MG 1228 TEAN SOCKET 100676 NX APPROVED DATE FATA wi NO OPTIONS ce 1 64 ANGULAR MINI GASS WIRING DIAGRAM 1 2 z DATE SIZE DRAWING NUMBER 8 15 01 1228 04 07 LOW PURGE LOW TEMP APPENDIX B 1 PD Dryer Replacementwith Two Part End Fittings Tools Needed Allen wrench 3 32 Snap ring pliers Pair of lightweight gloves MOND Hold coupling and shell with one hand and remove front nut on each end with the other Refer to Figure 10 Loosen set screws on both ends of couplings using Allen wrench Remove snap ring from both sides using snap ring pliers Put on pair of lightweight gloves protects membrane tubing from skin oils contaminating surface and reducing drying efficiency Pull element header out of housing on one side to expose o ring Do not rotate more than 10 in either direction ITEM Q OON QTY NN aNNNANN FRONT NUT SHELL TUBE SEAL VITON SNAP RING EXT SS SHELL TUBE Remove inner o ring Gently pull element out other end Reverse procedure to assemble dryer Parts List DESCRIPTION COUPLING SET SCREW 10 32 SS FRONT NUT SEAL VITON DRYER ELEMENT ASS
18. TE x SAMPLE PUMP MOTOR BELOW FRONT PANEL HEATLESS AIR DRYER BELOW FRONT PANEL OPTIONAL N DIGITAL ELECTRONIC _ TEMPERATURE CONTROLLER N POWER SWITCH lt gt Ber Mini G A S S POWER CONNECTION 1 2 CONDUIT HUB 110 220 VAC FUSE DRY KYNAR 1 4 COMPRESSION EXHAUST PORT 1 47 NPT FEMALE NAFION MEMBRANE DRYER MODEL PD 50T 24KA PURGE EXHAUST TEMPERATURE SENSOR _ TEFLON COATED HEAD SAMPLE PUMP MEMBRANE DRYER P PURGE AIR FLOWMETER FLOWMETER SUPPLY PRESSURE REGULATOR FLOWMETER SUPPLY PRESSURE GAUGE SAMPLE OUTLET PURGE AIR INLET NPT FEMALE HEATLESS DRYER PURGE AIR EXHAUST NPT FEMALE Diagram 1 MG 1228 Style System Mini GASS User Manual 29 r SAMPLE INLET FNPT lt CN SZ HEATED BACKPLATE lt _Mini GASS ca A Gas Analysis Sampling System V Ji L sn eT TEPER J N VA FLOWMETER SUPPLY Laut
19. able a heatless air dryer can be installed in the Mini GASS to dry the compressed air supply Outlet of heatless dryer will be connected to standard purge gas flow controls Operation of heatless dryer is fully automatic and continuous and should not require any maintenance as long as oil free compressed air is used 2 9 Purge Air Eductor optional When the sample is under more than five inches of water vacuum a purge air eductor is required Eductor generates a vacuum to draw condensate from filter and drop pressure of purge gas to prevent collapsing of Nafion tubing 2 10 Z Purge optional For hazardous environments to meet Class I Division II specifications Refer to Appendix F Mini GASS User Manual 9 3 Installation Refer to Figure 4 for reference 3 1 Mounting Unit should be shielded from direct rain and snow Do not install outdoors if temperature will fall below 10 C Probe refer to Appendix D Automatic Blowback refer to Appendix D Z Purge refer to Appendix F General flow schematic refer to Figure 4 12 Install Mini GASS system on vertical surface with dryer filter compartment on top and control compartment on bottom 2 Place mounting feet on each corner of enclosure with slotted end protruding at 45 degree angle from enclosure 3 Drop mounting screw in from top and tighten into foot PURGE GAS EXHAUST HEATED ENCLOSURE ER CONTROL ENCLOSURE lt O WET SAMPL
20. d and to verify the equipment installation and operation is in compliance with the latest revision of these codes At a minimum you should follow all applicable sections of the National Fire Code National Electrical Code and the codes of the National Electrical Manufacturer s Association NEMA There may be local regulatory or government offices that can also help determine which codes and standards are necessary for safe installation and operation Equipment damage or serious personal injury can result from the failure to follow all applicable codes and standards We do not guarantee the products described in this publication are suitable for your particular application nor do we assume any responsibility for your system design installation or operation This product should not be operated in any manner that is inconsistent with its intended use If you have any questions concerning the installation or operation of this equipment or you need additional informa tion please call us at 1 800 337 3762 This publication is based on information that was available at the time it was printed At Perma Pure we constantly strive to improve our products and services so we reserve the right to make changes to the products and or publica tions at any time without notice and without any obligation This publication may also discuss features that may not be available in certain revisions of the product Trademarks Nafion and Teflon are regis
21. d by analog thermometer located in the purge air exhaust stream Safety Interlocks SIVS2 Systems equipped with the SIVS2 interlock option automatically shuts off the sample pump or sample control valve in the event of low purge airflow or low temperature in the system To accomplish this a differential pressure switch in the purge air inlet senses the flow of purge air and energizes a relay This relay then sends power to the contacts of a second relay which will energize only when the temperature set point has been reached After energizing this second relay sends power to the sample valve and the valve will open and allow sample flow Under normal operating conditions both safety relays will remain energized When the system is operating normally open contacts will close and remain closed Alarm relays may be field wired to initiate an external alarm Mini GASS User Manual 15 4 4 Preheating the System 1 Turn on AC power or steam to system WARNING 2 Set purge air pressure to 15 psig 3 Adjust purge air flow to 20 l min 4 Set purge air eductor vacuum level to 5 in Hg if applicable 5 Ensure purge air is exhausting from system 6 On systems with SIS2 or SIVS2 option temperature controller will be alternately displaying AL and actual purge air exhaust temperature until purge air temperature comes within 5 9C of setpoint temperature 7 Allow 15 30 minutes of additional heating time after system has come t
22. directly on the stack Once sample is drawn from the stack it is passed through a 2 micron ceramic filter to remove oils and acid aerosols Sample is dried and cooled immediately after removal from stack to minimize changes in sample composition Refer to Appendix D for Installation Instructions 2 2 Probe Blowback optional The optional blowback assembly to minimize maintenance of the probe filter by forcing air back through the element and releasing the particles back into the stack Refer to Appendix D for Installation Instructions 2 3 Filtration The sample is passed through a lu filter to remove particulates and aerosols The standard filter in the Mini GASS system has a borosilicate glass filter element with a fluorocarbon binder This element is disposable and will withstand high sample temperatures In addition to removing particulates it coalesces liquid aerosols and droplets Two flow patterns are possible with this filter 1 Particulate Filter Filter installed with flow passing from gt outside to the inside of the element With this installation collected particulates will build up on outside surface of the element allowing visual inspection of its condition Coalescing and Particulate Filter See Figure 2 Filter is installed with flow passing from inside of element to the outside An automatic drain is usually installed to remove the condensate Figure 2 2 4 Automatic Filter Drain optional
23. e filter in the probe 3 Blow Back Operation The blow back option includes a timer circuit which will initiate the blow back cycle based on a regular adjustable time period The time cycle control turned to the far left will cycle the blow back every 15 minutes At the far right side the period of time between cycles is about 24 hours The period of time between blow back cycles should be calculated to occur as often as when the filter has trapped one gram of particulates but no less frequently than once per day A jumper placed between AUTO will disarm the timer A contact closure between terminals labeled MAN and will initiate a blow back cycle The blow back solenoid valve will be opened for 2 seconds when the blow back cycle is started 4 Startup Return to Mini GASS Startup Section 4 on pages 14 16 5 Maintenance Changing the Filter in Blow Back Probe Assembly 1 Unscrew black filter cap inside Mini GASS system use gloves if hot to touch 2 Filter is now exposed With a pair of pliers pull out the old filter 3 Inspect o ring which are at each end of filter Replace if they are charred or deformed 4 Place new filter element using pliers Ensure it is centered and in contact with o ring 5 Screw cap back on the filter body Mini GASS User Manual 27 PURGE GAS EXHAUST WITH PURGE EDUCTOR NPT MALE WITHOUT PURGE EDUCTOR NPT FEMALE
24. end of turnbuckle to anchor at bottom of flange and fix pin in place with cotter pin N e DEN Probe Pipe Flange Turnbuckle Figure 14 Figure 15 Mini GASS User Manual 25 6 If system is being installed with automatic filter blow back option install blow back system on right flange bolt refer to Figure 16 7 Attach pre bent SS tubing to Mini GASS and to blowback assembly 8 Lift Mini GASS system into place so union fitting on back of system can be attached to probe pipe This is most easily accomplished with help of an assistant 9 While holding system in place tighten union hand tight 10 Connect free end of turnbuckle to anchor point at middle back of system refer to Figure 17 11 Attach with stainless clevis pin 12 Snap keeper wire into place 13 Adjust turnbuckle by turning it out to increase length until union fitting is straight Turnbuckle is used only to relieve torsional load from union fitting 14 Tighten union fitting with a wrench 15 Install insulation between flange and back of Mini GASS Insulation SS Tubing Right Flange Bor Anchor Point Blowback Air Supply Connection 110VAC Power Figure 17 Figure 16 Mini GASS User Manual 26 2 Plumbing 1 Connect blowback air line to blow back inlet port on the Mini GASS 2 Connect cal gas line to fitting labeled Cal Gas Inlet 3 Connect 110VAC power to blow back timer Note This also provides power to th
25. he programmed temperature the system s backplate will heat An aluminum heating block will conduct energy from the backplate to the dryer s shell tube Purge gas traveling through the dryer s shell acquires heat from the shell This process allows final temperature of the purge gas to be closely controlled and a consistent temperature gradient will be maintained Mini GASS User Manual 8 It is important that the dryer removes water in vapor state only If liquid water is introduced into the dryer efficiency will decline and the dryer could fail to perform altogether Tubing elongates approximately 10 over its dry length when saturated with liquid water causing tubing to kink inside housing Nafion dryers will operate most efficiently when a portion of the dryer is heated to prevent sample from condensing 2 7 Ammonia Scrubber optional The optional ammonia scrubbing canister must be used when ammonia or urea is used for the purpose of lowering levels or any time ammonia is present in sample stream Ammonia salts can deposit in dryer tubes and cause permanent loss of drying efficiency if not removed from the sample stream An ammonia scrubber consists of a polysulfone and 316 SS housing filled with a phosphoric acid based media and inert ceramic saddles This media will require periodic replacement See section 6 3 for replacement instructions 2 8 Purge Heatless Air Dryer optional If 40 C dewpoint purge air is not avail
26. in filter housing purges condensate out of system through drain line 2 Initially adjust DIP switches on drain timer to drain for 6 seconds every 24 hours Time on switches is additive Left switch should have only top 0 1 min switch in the ON position and right switch should have 8 and 16 hr switches in the ON position Time periods may need further adjustment after system has been in operation Mini GASS User Manual 14 4 3 Temperature Control PID Electronic Temperature Controller 1 Press and hold key Refer to Figure 8 2 Press either up or down key to adjust setpoint Setpoint temperature will change one C with each press of arrow key 3 When desired temperature is reached release both keys NOTE MG 1228 2812P and 1235 systems have a low temperature alarm that is programmed into controller Default temperature setting for alarm is 59C below setpoint temperature Refer to enclosed CAL Controls temperature controller manual and for more information PURGE FLOWRATE Mini G A S S Gas Analysis Sampling System PURGE AR FLOWMETER Figure 8 Steam Temperature Control Steam heated systems are regulated by a thermostatic steam control valve located in the purge air exhaust stream This valve is preset at the factory to an appropriate temperature determined by sample conditions A typical setpoint temperature is 180 F which is the approximate temperature of the purge air exhaust as indicate
27. ipment refer to Figure 6 Relay contacts are rated at 250 VAC 3A resistive Low Purge Low Dryer Air Flow Temperature Alarm Relay Alarm Relay dS die Figure 6 Mini GASS User Manual 11 3 3 Plumbing a Sample Connection Mini GASS with Probe refer to Appendix C With Optional Heated Line 1 2 Install heated line sealing fitting by threading hub into sleeve Ensure o ring seal is installed on outside of enclosure between sleeve and enclosure wall Run heated sample line through entry seal and into enclosure Connect sample line to compression fitting labeled Wet Sample In Shrink entry seal tubing around heated sample line with heat gun Connect sample outlet port of Mini GASS to sample line running to analyzers High temperature heated line is not necessary for this connection If sample line will be exposed to freezing temperatures freeze protected line is suggested Without Heated Line 1 2 b Purge Air Supply Connect sample line to bulkhead fitting labeled Sample Gas In Connect sample outlet from Mini GASS labeled Dry Sample Out to sample line running to analyzer Instrument Air Purge gas must be of instrument grade with dew point no higher than 40 C 1 On model MG 1214 purge gas should be supplied to dryer via 0 30 slpm flowmeter and regulator capable of supplying 0 50 psig All other models come with control panel which includes flowmeter and regulator
28. low restriction in system it should be replaced Filter Element Replacement Refer to Figure 9 DJ F IO Loosen bolt on bottom of filter Gently pull apart assembly and remove old element Place new element into grooves in top and bottom of housing When re assembling inspect for o rings on top and bottom caps and on center bolt Install glass shell onto bottom piece Place new element in groove in bottom piece Be sure that element is seated correctly and parallel to glass shell Carefully mate bottom assembly onto top piece Slight twisting motion may be required to allow shell to slip over o ring seal Visually make sure element is seated correctly in top groove Replace bolt through hole in bottom piece and screw clockwise into top piece Do not over tighten center bolt It should be just tight enough so it does not vibrate loose Over tightening will not help the filter to seal a Bottom Cap Figure 9 Bolt Mini GASS User Manual 18 6 2 Dryers Under normal conditions Perma Pure dryers require little maintenance and can last for several years However if there is no pre filter and the tubing becomes clogged or saturated with water the dryer may require cleaning or repair When disassembling the dryer note that the end fittings on the PD SERIES dryer can be easily rotated on the shell tube This rotation should be avoided to prevent twisting the membrane tubes inside the shell Refer to Ap
29. lt TO BLACK zao gt TO GROUND VIOLET WIRES ARE TWO SEPARATE CONNECTIONS WHITE WIRE IS INDICATED AS BLACK Z PURGE PRESSURE SwiTcH Z PURGE OVER RIDE PUMP FUSE POWER N C SWITCH SWITCH SWITCH TI SEE WIRING HARNESS DWG 4MG 2812 04 04 FOR WIRE GROUPING AND LENGTHS 33 ao ee BB LL UU HEAT SHRINK SHIELDING H F NA L CNY FERRITE BEAD TEMPERATURE CONTROLLER 1 R OUTPUT SSR OUTPUT TEMP ALARM RELAY NEUTRAL N 7 LINE L FERRITE BEAD THERMOGOUPLE Gm i c 16 BUTT a ee 12 BUTT CONNECTOR 101505 101506 2 PLACES PERMA PURE INCORPORATED 8 EXECUTIVE DRIVE TOMS RIVER N J 08754 REFERENCE SCALE DRAWN BY DATE STANDARD MG 2812T 7 5 7 9 08 H APPROVED BY me TOLERANCES EXCEPT AS NOTED w SAMPLE PUMP amp FRACTIONAL DV AND ZP OPTION 8 RELAY t1 64 SOCKET 4100676 DRAWNG NUMBER LOW PURGE LOW TEMP MG 281 2 04 05
30. meter Nafion tubes arranged in a parallel bundle as shown in Figure 3 below After sample enters one of these tubes it comes in contact with the Nafion membrane walls The membrane selectively removes water vapor from the sample by a process of permeation distillation Water vapor travels through the tubing walls driven by the difference in partial water vapor pressure on the opposing sides of the membrane As the sample flows from inlet to outlet water is continually removed reducing the sample dew point as it travels through the dryer Wet purge gas outlet Dry gas O outlet Wet c gt X cC gt gas inlet s Dry purge gas inlet Figure 3 Dry purge gas enters the dryer at the sample outlet end and performs two functions 1 Provides a medium for water vapor from the sample to be carried away 2 Creates a temperature gradient along length of dryer Ambient purge air enters the dryer at sample outlet keeping that portion of dryer cooled This counter current flow is required to produce a temperature gradient along the length of the dryer To effectively maintain the gradient the temperature of purge gas exhaust is monitored and controlled by an electronic temperature controller As purge gas passes through the dryer it is heated to the desired sample inlet temperature This gradient allows for both rapid vapor removal and decreased final dew point If the purge gas temperature begins to fall below t
31. monitored Figure 1 below gives a general overview of a Mini GASS system Model MG 1228 Standard Features Include Options Heated Enclosure Filter Particulate and or Coalescing Perma Pure Nafion Gas Dryer Temperature Controller Dryer Purge Flow Controls Purge Air Dryer Sample Pump Filter Drain Ammonia Scrubber Purge Air Eductor Z Purge Probe Automatic Blowback 125 SAMPLE INLET SEALING FITTING FOR 121 4 1 O D HEATED LINE 8 SAMPLE INLET FITTING 316 SS 1 4 COMPRESSION SAMPLE FILTER FF 250 SG 2 5G HEATED BACKPLATE DRAIN VALVE OPTION DRAIN VALVE EXHAUST PORT 1 4 gt HEATLESS DRYER OPTION _ BELOW FRONT PANEL DIGITAL ELECTRONIC TEMPERATURE CONTROLLER POWER SWITCH POWER CONNECTION 1 2 CONDUIT HUB 110 220 VAC FUSE Figure 1 Mini GASS User Manual PURGE EXHAUST PORT 1 4 NPT FEMALE NAFION MEMBRANE DRYER MODEL PD 200T 24SA PURGE EXHAUST TEMPERATURE SENSOR MEMBRANE DRYER PURGE AIR FLOWMETER FLOWMETER SUPPLY PRESSURE REGULATOR FLOWMETER SUPPLY PRESSURE GAUGE DRY SAMPLE OUTLET 316 SS 1 4 NPT FEMALE PURGE AIR INLET 1 4 NPT FEMALE HEATLESS DRYER PURGE AIR EXHAUST 1 4 NPT FEMALE 2 Mini GASS Components 2 1 Probe and Probe Filter optional The Mini GASS Probe and Probe Filter eliminates the need for a heated line by mounting the conditioning system
32. o setpoint temperature Sample flow may be started For Mini GASS with a pump when set on AUTO mode pump will turn on when unit has reached temperature and purge gas is sensed Mini GASS User Manual 16 5 System Fine Tuning Temperature Adjustment 5 1 Steam Heated Systems Steam control valve is factory set to 180 F and is normally not field adjustable This temperature is adequate for most applications in which sample gas water content is not in excess of 50 water vapor by volume Consult factory if condensation in sample tubing is detected 5 2 Electrically Heated Systems 1 Check that no condensate is present in sample line between filter and dryer 2 If water droplets are visible increase temperature of filter dryer compartment by 5 C 3 Allow about 1 2 hour for system to stabilize and then check again for condensate 4 f necessary continue to increase temperature at 5 C intervals until condensate is no longer visible Do not exceed 100 C Maximum system temperature is 100 C Operation above this temperature can cause damage to Nafion dryer It is essential that purge gas flows continuously and setpoint temperature is not above 100 C to prevent damage to dryer Mini GASS User Manual 17 6 Maintenance 6 1 Filters If system is fitted with a pre filter it should be checked regularly to ensure that the element is in good condition If element appears to be dirty or begins to cause f
33. ocated at lower left side of enclosure is connected to a thermostatic steam trap to allow condensed steam to drain in a controlled manner Condensate can be piped to a wastewater drain or to condensate recovery system Figure 7 Mini GASS User Manual 13 4 Start Up Procedure 4 1 Setup Check 1 Check that electrical sample purge drain and or steam connections have been made 2 Turn on compressed or instrument air to system 4 2 Automatic Filter Drain Control Optional Automatic filter drain is controlled by a repeat cycle timer that operates a solenoid valve Two DIP switches are located on timing device to control drain and cycle times located on backside of control panel Standard factory setting is to drain for 0 1 minute once every 24 hours Drain time left DIP switch 0 1 minutes 1 switch on all others off to 102 3 minutes all switches on Cycle time right DIP switch 1 hour 1 switch on all others off to 1023 hours all switches on 1 Adjust purge air pressure regulator to about 15 psig Sample under vacuum Purge air regulator will control air pressure to eductor of the automatic filter drain Regulator must be set to provide ample vacuum to remove filter condensate but not excessive enough to cause interruption in sample flow to analyzers Under positive pressure Condensate drain flow is directly controlled by solenoid valve When solenoid valve is actuated opened positive pressure
34. pendix B for PD dryer element replacement 6 3 Ammonia Scrubber Media Replacement When deposits are visible on 75 of the scrubber scrubbing media needs to be replaced Unscrew thumbscrew on bottom of housing Swing yoke to one side Separate housing and bottom cap as an assembly from top cap Remove spring and top screen Remove old media and dispose of properly rinse housing with soapy water to clean Fill housing with 50cc of Berl Saddles tap housing to allow material to settle Pour 150cc of Scrubbing Media tap housing to allow material to settle Replace stainless steel screen on top of media Replace spring on top of screen 10 Clean o rings on shell and inside top manifold replace if necessary 11 Place center tube into o ring seal in top cap 12 Push and twist to seal housing around o ring 13 Replace yoke and finger tighten thumbscrew do not overtighten O Oo N O Oi Ps O IS 6 4 Fuse Fuse Replacement 1 Turn cap marked FUSE counter clockwise 1 4 turn and the fuse holder will come out 2 Remove the blown fuse and replace with one of equal amperage rating The standard fuse is a BUSS type AGC or equivalent 3 After installing correct replacement fuse re install fuse holder by pressing inward and twisting 1 4 turn clockwise Mini GASS User Manual 19 APPENDIX A 1 Specifications MAXIMUM SAMPLE FLOW RATE MAXIMUM INLET SAMPLE TEMPERATURE MAXIMUM GAS SAMPLE WATER VAPOR CONTENT
35. rs 6 3 Ammonia Scrubber 6 4 Fuse Mini GASS User Manual APPENDIX A General 20 1 Specifications 2 Wiring Diagram APPENDIX B Dryer Element Replacement 2222aaaaaaaacaannnnnnnnnnnnnnnnnnnnnnnnananannnnnnnnnnnnana 22 1 PD Dryer Replacement with Two Part End Fittings 2 PD Dryer Replacement with One Part Molded Fitting APPENDIX C Replacement Parts List for 55 23 APPENDIX D e eh 24 1 Flange Mounted with Integral Sampling Probe and Filter Blowback Installation 2 Plumbing 3 Blow Back Operation 4 Startup 5 Maintenance 6 Flow Schematic APPENDIX E Model DESWIDES s i ea eed use deities 28 APPENDIX Fi 31 1 Z Purge Operation 2 Troubleshooting 3 Helpful Hints Mini GASS User Manual WARNING Thank you for purchasing sample gas conditioning equipment from Perma Pure LLC We want your new sample gas conditioning equipment to operate safely Anyone who installs or uses this equipment should read this publication before installing or operating this equipment To minimize the risk of potential safety problems you should follow all applicable local and national codes that regu late the installation and operation of your equipment These codes vary from area to area and usually change with time It is your responsibility to determine which codes should be followe
36. s are energized Low Purge Low Dryer e Refer to the graphic to the right For external Air Flow Temperature connection the second set of contacts in each Alarm Relay Alarm Relay relay is dry No power is applied This allows the e el user to determine the control voltage that will be used A typical use of the alarm signals is as described above to control sample flow The actual use is left up to the customer N O COM N C N O COM N C MAINS POWER 110 220 VAC 50 60 HZ RM 4 N O RM 42 N C croot 0 200 O TERM 6 COM HEAT SHINK X LONG 6 CONDUCTOR CABLE 101433 le HEAT SHINK 4 LONG ALARM RELAY TERMINAL BLOCK 4100366 MAINS POWER TERMINAL BLOCK 100365 S Bro oo LINE 1 LINE 2 GROUND REVISION RECORD BACKPLATE HEATER PURGE PRESS SWITCH MEE PUMP DRAIN VALVE TO RED 220V o cr no BLACK 110V DE ENERGIZES WHEN PURGE AIR FLOW IS LOW END CONNECTOR LEGEND MALE BULLET CONNECTOR FEMALE BULLET CONNECTOR FORK TYPE CONNECTOR 3 16 FEMALE FLAG CONNECTOR 1 4 FEMALE FLAG CONNECTOR 1 4 STRIPPED INSULATION NOTES SIZE 18 AWG WIRE AWM TYPE 1007 80 C TEMPERATURE RATING MAS 90 fs 100878 DE ENERGIZES WHEN TEMP 15 LOW LOW TEMP ALARM RELAY DRAIN TIMER cro TO BLACK TO BLACK Ovo TERM 1 1 TERM 2 C 9 L 1 TO WHITE T0 BLACK 17
37. tered trademarks of El DuPont de Nemours Copyright 1996 2005 Perma Pure LLC All Rights Reserved Mini GASS User Manual 4 WARRANTY AND DISCLAIMERS Seller warrants that product supplied hereunder shall at the time of delivery to Buyer conform to the published specifications of Seller and be free from defects in material and workmanship under normal use and service Seller s sole obligation and liability under this warranty is limited to the repair or replacement at its factory at Seller s option of any such product which proves defective within one year after the date of original shipment from seller s factory or for a normal usable lifetime if the product is a disposable or expendable item and is found to be defective in material or workmanship by Seller s inspection Buyer agrees that 1 any technical advice information suggestions or recommendations given to Buyer by Seller or any representative of Seller with respect to the product or the suitability or desirability of the product for any particular use or application are based solely on the general knowledge of Seller are intended for information guidance only and do not constitute any representation or warranty by Seller that the product shall in fact be suitable or desirable for any particular use or application 2 Buyer takes sole responsibility for the use and applications to which the product is put and Buyer shall conduct all testing and analysis necessary to validate
38. urge enable OFF position for proper operation of the Z Purge system System Startup 1 Verify that AC power to the sampling system enclosure is disconnected 2 Turn the sampling system power and sample pump switches to the ON position 3 Adjust the membrane dryer purge air pressure to 15 psig and the flow meter to 20 Ipm Sampling systems with the sample pump option have an air line that blows air directly on the sample pump motor to prevent overheating The hissing sound of the air is normal and is not a leak 4 Close both of the sampling system enclosure covers and tighten the screws It is not necessary to close the Z Purge enclosure cover since this enclosure is not purged or pressurized 5 Ensure that the vent hole at the bottom of the sampling system control enclosure in not blocked or obstructed in any way 6 Adjust the Z Purge pressure regulator by turning the knob clockwise until the Z Purge gage indicates in the middle of the Safe area Lock the knob by pressing it in 7T Wait 10 minutes for the enclosure start up purge This is necessary to rid the sampling system enclosure of any hazardous gases 8 Connect the sampling system to the appropriate AC power source The system will turn on and the system will begin to heat up When the system temperature comes to within 10C of the temperature controller set point the sample gas pump will start and sample gas will begin to flow Z Purge Monitoring Operation
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