13
MAINTENANCE
Troubleshooting
WATER FLOWS INTO DRAIN DURING SHUTDOWN
When steamer is shut down and cold water is running
continuously into the open drain, either or both solenoid
valves did not close when steamer was turned off.
1. Disassemble solenoid valve(s) and examine for scale
or foreign particles lodged in diaphragm or core tube.
2. Clean valve(s) thoroughly and reassemble, or re-
place valve(s).
WATER OVERFLOWS INTO COOKING
COMPARTMENT
When steamer is first turned on for the day, and the fol
-
lowing conditions occur:
• READY light does not come on after about 5 min-
utes
•
Water begins to overflow into cooking compartment
•
Water fill solenoid valve is open
Any or all of these symptoms may indicate a problem with
the operating probe due to either:
1. A short between the operating probe terminal and
body of the steamer. Call your authorized servicer.
2. Excessive scale build-up on the operating probe.
This acts as an “insulation” and prevents the probe
from sensing the water level. It is therefore unable
to close the water fill (solenoid) valve to shut off the
water.
As a temporary solution, with power OFF, unscrew
probes, check visually, and clean or chip off scalant.
Replace probe.
This problem is an indication of severe harmful water
conditions which should be corrected immediately to
avoid damage to the components and ultimate mal-
function of the steamer. (See WATER QUALITY in
this manual).
HEATER ELEMENTS DO NOT COME ON
When the steamer is turned ON and heater elements
do not activate, and the READY light does not come on,
then the contactors may be burned out. If a considerable
amount of “chattering” of contactors has been previously
experienced, then the thermostat bulb may be coated
with scalant and unable to sense water temperature in
the boiler accurately, and therefore unable to control the
contactors.
1. Replace contactors.
2.
Unscrew thermostat bulb, clean off scalants and
screw thermostat bulb back in.
This problem may be an indication of inadequate water
quality and is not covered under warranty. Have water
quality analyzed and corrected immediately to avoid com-
plete malfunction of the steamer.
UNIT SHUTS DOWN WHILE IN OPERATION
Pressure switch has been activated due to 5 psi (34 kPa)
pressure in the generator tank. Pressure in the genera-
tor tank is caused by plugged steam jet tubes or steam
diverters due to scale or poor water conditions. Steam jet
tubes/steam diverter will have to be cleaned or replaced.
