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GENERAL TROUBLE SHOOTING GUIDE 

TROUBLES 

POSSIBLE CAUSE 

REMEDY 

Water does not enter steam 

generator. 

 
 
 
 

1. Water main shut-off. 

2. Power not reaching unit. 

3. Probes Dirty 

4. Water level control board defective 

5. Solenoid valve defective 

1. Turn on. 

2. Check main fuse or circuit. 

3. Remove & Clean 

4. 

See page #9

 for test procedure 

5. If 120 Volt is verified at solenoid coil, 

but fails to open, replace solenoid. 

Water enters steam generator 

very slowly. 

1. Dirty strainer screen in solenoid valve 

1. Clean or replace strainer screen. 

P/N 08-4871 

Indicator light on control box 

does not light when water switch 

is manually reset. 

1. Indicator light defective. 

2. Time delay relay loose or defective. 

1. Replace. 

2. Check for good connections. If alright - 

replace. 

Water level in gauge glass fluctuates 

up and down. 

 

1. Top shut off on water gauge is closed. 

1. Open 

Steam generator fails to build up 

pressure when water level is  

proper and fuel switch is turned on. 

 
 
 
 

1. Check to see that circuit breaker in main is 

turned on. 

2. Check to see that contactors are pulling in. 

3. Current flow is broken at water level control 

(ascertain with continuity check). 

4. Current flow is broken at pressure control or 

high limit control switches due to 

maladjustment or defect (ascertain with 
continuity check). 

5. Heating elements are defective. 

1. Check for voltage at terminal block. 

2. Check continuity of coil, if open 

replace. 

3. Check for voltage at L1 & L2, replace if 

defective. 

4. Readjust - to proper setting - refer to 

instructions for re-adjustment, replace if 

defective. 

5. Replace if continuity check through the 

circuit of each element shows defective. 

Steam generator fails to reach 

full operating pressure of 5 Ibs. 

or 15 Ibs. 

 
 
 

1. Pressure gauge reads inaccurately. 

2. Pressure control and high limit control 

switches are out of adjustment. 

3. Safety valve not seating properly. 

4. Contactor coils (one or both) not energizing 

and closing circuit to the heating elements. 

1. Replace. 

2. Follow instructions for re-adjusting or 

replace if defective. 

3. Clean or Replace. 

4. Check - replace either contactor coils 

or complete contactor - if found defective. 
Measure amperage at terminal block 

check to be sure there is an even draw on 
all three phases - see wir ing diagrams for 
correct AMP draw. If uneven or zero 

amperage draw is found on one of the 
three phases, check for blown fuse. If 
fuse is O.K. shut off power, remove wires 

from heating elements and run continuity 
check - replace if defective. 

 

 

 

 

 

 

 

 

 

Содержание M24E42

Страница 1: ...DELS M24E18 M24E24 M24E32 M24E36 M24E42 M24E48 M36E18 M36E24 M36E32 M36E36 M36E42 M36E48 FACSIMILE tt 617 387 4456 OUTSIDE MA 800 227 2659 Form No S 2379 Printed in U S A 3 90 35 Garvey St Everett MA 02149 4403 Tel 617 387 4100 Telex 94 9414 Cable MAFORCO ...

Страница 2: ...stment of Pressure Reducing Valves 13 Adjustment Pressure Control Switches 14 Control Box Wiring Diagram 15 Wiring Diagram Heating Circuit 16 Wiring Diagram Heating Circuit Export 17 24 Cabinet Base 18 36 Cabinet Base 19 Steam Generator Right Side View 20 Control Box Assy Covered Uncovered 21 Heating Elements 22 Plumbing Section Left Side View 23 Contactors Liquid Level Control Box 24 A Small Gene...

Страница 3: ...nit which will indicate to Market Forge Service Division the type of steam generator with which you are equipped This information can be found on the nameplate attached to the steam generator frame THEORY OF OPERATION FOR ELECTRIC STEAM GENERATORS Explanation of how the control system works on manual and automatic electric steam generators With the steam generator filled with water to its proper l...

Страница 4: ...e skids to protect and secure the equipment until it is ready for installation 5 Sign for shipment if all is in order Note shortages external and concealed damage if any on the bill of lading before accepting a partial or damaged shipment 6 If necessary contact the carrier immediately to file a claim All claims must be filed by the receiver 7 Do not remove the cartons or the skids from the cooking...

Страница 5: ...e D Drain Pipe full 2 50mm I P S to flush floor drain capable of receiving water flowing at a maximum rate of 5 gallons 19 liters per minute DO NOT MAKE SOLID CONNECTION TO FLOOR DRAIN PVC and CPVC are not acceptable materials for drains EC Electrical Connection 120 volts AC 60Hz single phase 1 2 13mm conduit connection or equivalent Use wire suitable for at least 90 C Amp draw for generator contr...

Страница 6: ... E Proceed with daily operating procedure DAILY OPERATING PROCEDURE STEP 1 Flip WATER switch from OFF to ON STEP 2 Wait 6 minutes for water to fill in steam generator Gauge glass should indicate approx 2 3 full STEP 3 Flip heat switch from ON to OFF and release back to ON Indicator light will come on immediately This is necessary to manually reset the unit This also turns on HEAT DAILY SHUT DOWN A...

Страница 7: ...LEANING STEP 1 Flip HEAT and WATER switches to OFF Indicator light will go out STEP 2 Open steam generator drain valve and drain completely STEP 3 Repeat Steps 1 2 of DAILY OPERATING PROCEDURE Water to remain in steam generator until next daily use STEP 4 For shutdown for extended periods steam generator must be cleaned and drained completely Refer to steam generator cleaning instructions for modu...

Страница 8: ......

Страница 9: ...the normally open contact should be closed and the normally closed contact should be open Bringing power to the control should not change the side of the control that contains the transformer 7 Place a test jumper wire from either G terminal to the H terminal After a 10 second 2 time delay the LED will go out and the relay next to this LED should deenergize returning the contacts to their original...

Страница 10: ......

Страница 11: ...d 2 time delay the LED will go out and the relay next to this LED should deenergize returning the contacts to their original state Normally open should be open Normally closed should be closed 8 Removing the jumper from G and H should relight the LED and energize the relay 9 Place a test jumper wire from either G terminal to the LLCO terminal The LED next to the transformer should light and the re...

Страница 12: ...ty check 4 Current flow is broken at pressure control or high limit control switches due to maladjustment or defect ascertain with continuity check 5 Heating elements are defective 1 Check for voltage at terminal block 2 Check continuity of coil if open replace 3 Check for voltage at L1 L2 replace if defective 4 Readjust to proper setting refer to instructions for re adjustment replace if defectiv...

Страница 13: ...ator cuts out after 10 15 minutes of operation 1 Defective time delay relay 2 Poor solder connections on relay socket 1 Replace relay 2 Resolder connections on relay socket Airvent and vacuum breaker leaking 1 Not closing 1 Replace Cold water condenser does not function 1 Main water line shut off 2 Thermostat out of adjustment or defective 3 Tighten coil nut 4 Check solenoid coil for continuity if...

Страница 14: ...pting excessively high current 3 Discolored contacts caused by insufficient contact pres sure loose connections etc 4 Dirt or foreign matter on contact surface 5 Short Circuit 1 Do not file silver tips Rough spots or dis coloration will not harm tips or impair their efficiency 2 Check for grounds shorts or excessive current 3 Check contact carrier for deformation or damage clean and tighten connec...

Страница 15: ...slowly at intervals until reduced pressure reaches the desired point 5 P S I 4 Tighten adjusting screw lock nut 5 If chattering noise should occur turn adjusting screw located in bottom half of valve body clockwise or counter clockwise until chattering stops INSPECTION MAINTENANCE Reports of unsatisfactory regulation of the pressure reducing valve is usually due to dirt pipe compound etc blocking ...

Страница 16: ... and high limit pressure control switch B by turning adjusting nut Knurled knob clock wise to raise and counterclockwise to lower actuation point Switch A should be set so that generator comes on when generator pressure gauge reads 12 PSI and goes off when gauge reads 14 PSI Switch B should be set so that generator will shut off if pressure reaches 15 PSI If 15 Ib steam generator is used for 5 Ib ...

Страница 17: ......

Страница 18: ......

Страница 19: ......

Страница 20: ... 90 2661 Side Panels R L St Steel 11 91 5481 Cabinet Hinqe Top Left Kit 90 9039 Side Panels R L St Steel Kit Bottom Riqht 3 10 0631 Leo 91 5482 Cabinet Hinqe Top Riqht 4 98 0427 Ass v 24 x 33 Modular Frame Bottom Left 5 91 5476 Door Ass v 24 12 10 2365 Lock Nut 6 98 0418 Panel MTG Bracket 13 10 2511 Washer 7 91 9154 Feature Strip ST ST 14 10 2307 Hex Nut 8 90 3210 Bracket Maqnetic Catch not shown ...

Страница 21: ... Rear Panel 18 Aluminized 12 10 5561 Magnetic Latch 4B 91 2656 Rear Panel 18 Stainless 13 90 3210 Bracket Magnetic Latch 5 10 0631 Leg 14 91 9153 Feature Strip ST ST 6 90 2661 Side Panels R L St Steel 15 10 0453 Cabinet Hinge Left Bottom Kit 90 9039 Side Panels R L St Steel Kit 17 10 2511 Lockwasher 5 16 7 10 2365 Self Locking Nut 18 10 2147 Hex Bolt 5 16 18 8 Ref Only Ass v 36 x 33 Modular Frame ...

Страница 22: ...CLIP 5 10 5320 3 4 15 LBS SIDE OUTLET SAFETY VALVE 6 10 4741 3 4 8 LBS SIDE OUTLET SAFETY VALVE 7 08 6427 LIQUID LEVEL PROBE L W 6 1 4 LG 12 DIA STEAM GENERATOR 8 08 6338 LIQUID LEVEL PROBE 5 5 16 LG BOTH 8 12 DIA STEAM GENERATOR 9 10 3832 ELBOW 90 STREET 1 4 IPS PORT OF ENTRY TOTAL CONCEPT 10 10 3428 PLUG SQ 1 4 IPS PORT OF ENTRY TOTAL CONCEPT 11 10 7978 AIR VENT 12 91 8654 STEAM GENERATOR FRONT ...

Страница 23: ... VOLT For A Plus w Kettle AUTO DRAIN 7 10 8411 PRESSURE SWITCH CYCLE ON OFF E15 F15 PLS 91 6085 8 10 8410 PRESSURE SWITCH HIGH LIMIT CUT OFF E15 H15 PLS Both Assy 9 08 4821 WATER SOLENOID VALVE120 VOLT 10 08 4810 WATER SOLENOID VALVE240 VOLT 11 08 4871 REMOVABLE STAINLESS STEEL STRAINER 12 10 4653 DRAIN CONDENSATE THERMOSTAT 13 10 5184 COMMON TERMINAL STRIP 14 10 4634 TIME DELAY RELAY 120 VOLT 15 ...

Страница 24: ...EMENT 480 VOLT 9KW 1 or 3 PH 4 08 6415 208 FIREBAR HEATING ELEMENT 208 VOLT 12KW 5 08 6416 240 FIREBAR HEATING ELEMENT 240 VOLT 12KW 6 08 6417 480 FIREBAR HEATING ELEMENT 480 VOLT 12KW 3 PH 7 08 6418 208 FIREBAR HEATING ELEMENT 208 VOLT 16KW Only 8 08 6419 240 FIREBAR HEATING ELEMENT 240 VOLT 16KW 9 08 6420 480 FIREBAR HEATING ELEMENT 480 VOLT 16KW 10 08 6421 208 FIREBAR HEATING ELEMENT 208 VOLT 1...

Страница 25: ...R GAUGE GLASS ASSY 3 90 0039 RUBBER BRASS WASHER NOT SHOWN 4 10 1311 DRAIN VALVE120 VOLT 5 10 0864 DRAIN VALVE240 VOLT EXPORT 6 08 4845 WATER FEED HOSE 7 08 4843 WATER FEED HOSE 8 08 1201 DRAIN HOSE 9 10 3661 MANUAL DRAIN VALVE3 4 10 10 3490 TEE SIDE OUTLET 3 4 11 91 3312 DRAIN SUB ASSEMBLY 12 10 1025 UNION 90 ELBOW 3 4 23 ...

Страница 26: ...END SECTION 1 REQ D 7A 10 5503 TERMINAL BLOCK CONTACT SECTIONS 2 REQ D 8 91 8666 CONTACTOR CONTROL BOX ASS Y 36 42 48KW 3PH 8A 91 8667 CONTACTOR CONTROL BOX ASS Y 36 48KW Export 4 Wire 3PH 8B 91 8767 CONTACTOR CONTROL BOX ASS Y 18 24 32KW 3PH 60 Hz USA 8C 91 8768 CONTACTOR CONTROL BOX ASS Y 18KW 1 PH 60 Hz USA 8D 91 8769 CONTACTOR CONTROL BOX ASS Y Export 50 Hz 18 24 32KW 3PH 4 Wire REF 91 8550 WI...

Страница 27: ...O DESCRIPTION 1 10 7974 SIGHT GLASS WINDOW 2 91 3368 REFLECTOR REF ELECTRIC MODULAR BASE STEAM GENERATOR FINAL ASSY BOTH LARGE SMALL 25 REF SMALL GENERATOR WITH CONTACTOR BOX REF LARGE GENERATOR WITH CONTACTOR BOX ...

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