Troubleshooting guide

MARKET FORGE INDUSTRIES, INC.
35 GARVEY STREET EVERETT, MA 02149
TEL: [phone] TELEX: 91-9494
FAX: [phone] OUTSIDE MA: 800-227-2659
Form No. S-48466 -Rev. A 11/98
4-3
10. STEAM ENTERS COMPARTMENT
CONTINUOUSLY
. TIMER DIAL
NOT
TURNING.
a. Constant steam position.
b. Faulty thermostatic
switch.
c. Faulty timer motor.
d. Faulty wiring.
a. Move knob to timing location.
b. Replace switch. See Subsection 5.4.8.
c. Replace timer. See Subsection 5.4.4.
d. Inspect condition of wire and tightness of
all connections. Correct as needed.
11. STEAM CONTINUES TO FLOW
INTO
COMPARTMENT AND/OR
BUZZER
FAILS TO SOUND AT END
OF
TIMER SETTING.
a. Timer contacts faulty.
b. Buzzer faulty.
c. Faulty wiring.
a. Replace timer. See Subsection 5.4.4.
b. Replace buzzer. See Subsection 5.4.9.
c. Inspect condition of wire and tightness of
all connections. Correct as needed.
12. BURNERS WILL NOT IGNITE. a. Manual gas shut-off valve
is not open.
b. Main POWER switch in
OFF position.
c. No water in boiler.
d. Electricity off.
e. Faulty hot surface igniter.
f. Faulty ignition module.
g. Faulty gas valve.
h. Faulty transformer.
a. Open.
b. Turn to ON position.
c. Check to be sure main power switch is on.
Check to be sure main water supply is on.
d. Turn on 110V electrical supply.
e. Check and replace.
f. Check and replace.
g. Check and replace.
h. Check and replace.
13. COLD WATER CONDENSER DOES
NOT
FUNCTION.
a. Main water line shut off.
b. Thermostat out of adjust-
ment or defective.
c. Loose coil nut.
d. No continuity in solenoid
coil.
a. Turn on.
b. Readjust for proper operation or replace if
defective.
c. Tighten coil nut.
d. Check coil for continuity. If open, replace.
14. BOILER OVERFILLS WITH
WATER
.
Probes dirty. Clean probes.
15. DRAIN WATER TEMPERATURE
TOO
HIGH.
a. Faulty 130°F thermostat
on the condenser tank.
b. Faulty tempering tank fill/
cool solenoid valve.
c. Faulty wiring.
a. Check 130°F thermostat. Replace if
necessary.
b. If 120V is verified at the solenoid cell, but
the valve fails to open, replace solenoid.
c. Check wiring.
4. TROUBLESHOOTING (cont’d.)
TABLE 4-1 (cont’d.)
PROBLEM PROBABLE CAUSE REMEDY
4.3.1 Incoming Power
Before troubleshooting any of the electrical parts or
assemblies, verify that power is being supplied to the
cooker. Incoming power is connected at the boiler (or
direct-connected steam) control box located in the base
cabinet. With power connected to the cooker, an AC volt-
meter is used to measure 120 volts across L1 and L2. If
120 volts is present, and the cooker will not operate, the
fault lies within the electrical circuits of the cooker.