Market Forge Industries M36G300A-4SP, M24G100A-4SP, M24G200A-4SP manual General TROUBL-SHOOTING

Page 12

GENERAL TROUBL-SHOOTING

TROUBLE

 

POSSIBLE CAUSE

 

REMEDY

Boiler fails to reach full operating

1.

Pressure gauge reads inaccu-

1.

Replace.

pressure of 5 lbs. or 15 lbs.

 

rately.

2.

Follow instructions for readjust-

 

 

 

 

2.

Pressure control and high limit

 

ing. (page 10)

 

 

control switches are out of ad-

3.

Purge manually or replace.

 

 

justment.

 

 

4.

Adjust water level control

 

3.

Safety valve not seating prop-

 

 

- check water feed valve for

 

 

erly.

 

 

 

 

sticking - clean or replace.

 

4.

Water level too high.

 

 

5.

Replace.

 

5.

Air vent not venting properly.

 

6.

See instructions on gas adjust-

 

 

 

 

6.

Insufficient flames on burners

 

ments. (page 5)

 

 

or improper gas supply.

 

 

 

 

 

 

 

Boiler fails to cut off after reaching

1.

Pressure switch set too high or

1.

Adjust or replace if defective.

operating pressure.

 

defective.

2.

Replace gas valve.

 

2.

Gas valve fails to cut off gas

 

 

 

 

 

supply when demands of pres-

 

 

 

 

sure switch have been met.

 

 

Safety valve blows off prematurely.

1.

Pressure set too high.

1.

Readjust pressure control.

 

2.

Pressure gauge reads incor-

 

(page 10)

 

 

 

 

 

rectly.

2.

Replace.

 

3.

Lime or debris on seat of valve

3.

Purge or replace.

Boiler builds up to pressure, shuts

1.

1. High limit switch set to low

1.

1. Follow instructions for read-

down, fails to come back on.

 

or operating pressure control

 

justing, see (page 10) Replace

 

 

switch set too high.

 

if defective.

Water does not enter boiler.

1.

Main water supply off.

1.

Turn on.

 

2.

Power not reaching unit.

2.

Check main fuse or circuit.

 

3.

Probes Dirty.

3.

Remove & Clean

 

4.

Water level control board defec-

4.

See page 11 for test procedure.

 

 

tive.

5.

If Voltage is verified at solenoid

 

 

 

 

5.

Solenoid valve defective

 

coil, but fails to open, replace

 

 

 

 

solenoid.

Cold water condenser does not

1.

Main water supply off.

1.

Turn on.

function.

2.

Thermostat defective.

2.

Replace if defective.

 

 

3.

Loose coil nut.

3.

Tighten coil nut.

 

4.

Solenoid coil not energized.

4.

Check coil for continuity, if open

 

 

 

 

replace.

Air vent leaking.

1.

Not closing.

1.

Replace.

9

Image 12
Contents GAS Operated Boiler Table of Contents Introduction HOW to USE this Manual IntroductionTo the Kitchen Manager Theory of Operation for GAS BoilerInstallation Instructions Installing LegsGAS Operated Boilers Models LevelingGAS Service Connections Electric Service ConnectionService Connections Gas Operated BoilersLower Deflector Assembly Operating Instructions First Check to be Sure ThatAdjustments If GAS Pressure is LOWIf GAS Pressure is TOO High Setting the Boiler Control Pressure Switches Pressure Control Switch AdjustmentGeneral TROUBL-SHOOTING Trouble Possible Cause RemedyGeneral TROUBL-SHOOTING Testing Procedure Water Control Board Testing ProcedureIllustrated Parts List Item no Part DescriptionPressure Switch Box Control Box Assembly, with and without Cover Plumbing, Left Side Gas Boiler Front View Gas Boiler, 24, 200K Gas Train, 200K BTU Boiler Shown Gas Train, 200K Boiler Shown Electrical Information Electrical Information Maintenance Cleaning the BoilerCleaning Instructions Maintenance Application Instructions General NotesDo not Reuse Container