Справочник Пользователя для Market Forge Industries STEAM-TECH ELECTRIC STEAM COOKER
14
TROUBLE-SHOOTING
GENERAL:
The information in this section is intended to assist the
operator, maintenance and the service personnel in lo-
cating the source of problems which may occur with the
cooker. Before following any of the procedures given
in this section, the operator/maintenance person should
be thoroughly familiar with the operation section of this
manual.
If the problem cannot be readily corrected without the
use of tools, the operator/maintenance person should
contact the nearest Market Forge service agency for as-
sistance.
WATER LEVEL CONTROL BOARD:
The Dual Function Water Level Controller is two controls
on one board. One controller maintains correct water
level in the generator, the other a low water safety cut-
off.
The following troubleshooting procedure will only deter-
mine if the Water Level Control Board is working prop-
erly, it will not determine why the board has failed.
WARNING: THIS PROCEDURE ExPOSES YOU TO A
SHOCK HAZARD AND MUST BE PERFORMED ONLY
BY qUALIFIED SERVICE TECHNICIAN.
Improperly connected or malfunctioning water level con-
troller may cause damage to the steam generator due
to low water, or create a scalding hazard to the operator
due to a hot water overflow condition.
TOOLS REQUIRED: A digital or analog volt meter ca-
pable of reading 120 volts A.C. and a jumper wire with
alligator clips.
Procedure:
Turn off all power to the unit.
Remove control panel or right side access panel-
Remove control panel or right side access panel-
Refer to Figure 6-1 for relay locations and terminal
identification.
Remove the wires from the terminal connectors “G,
Remove the wires from the terminal connectors “G,
H, and LLCO.”
1.
2.
2.
3.
WARNING: WHEN YOU TURN THE POWER
ON, THERE ARE TERMINALS THAT CARRY 120
VOLTS. PROTECT THE ENDS OF THESE DIS-
CONNECTED WIRES TO PREVENT SHORTING
TO HOT LEADS.
Turn power ON. Using the voltmeter, check that the
power being supplied to terminals L1 and L2 is 120
volts, plus 10%, minus 15%.
TESTING THE WATER FILL RELAY:
When the power is turned on, the LED (light emit-
ting diode) next to the water fill really should be ON.
Using the voltmeter, touching the probes to termi-
nals L2 and N.O. next to the water fill relay should
show 120 volts. Touching the probes to L2 and N.C.
should show no voltage.
Connect the jumper to terminals “G” and “H.” After
Connect the jumper to terminals “G” and “H.” After
a delay of 4-5 seconds, the relay should switch and
the LED will go OFF. Using the voltmeter, touching
the probes to terminals L2 and N.O. of the water fill
relay should show no voltage. Touching the probes
to L2 and N.C. should show 120 volts.
Disconnect the jumper.
Disconnect the jumper.
TESTING THE LOW WATER FILL RELAY:
With the power ON, the LED next to the Low Water
Relay should be OFF. Using the voltmeter, touch
probes to the L2 and N.O. terminals next to this re-
lay, there should be no voltage. Touching the probes
to terminals L2 and N.C. should show 120 volts.
Connect the jumper to terminals “G” and LLCO”.
Connect the jumper to terminals “G” and LLCO”.
The LED next to the Low Water Relay should turn
ON immediately.
Touch the voltmeter probes to terminal L2 and N.O.
Touch the voltmeter probes to terminal L2 and N.O.
next to the low water relay, there should be 120
volts. Touch the probes to terminals L2 and N.C.,
there should be no voltage.
Remove the jumper and turn OFF the power. Re-
Remove the jumper and turn OFF the power. Re-
connect the disconnected wires; wire to terminal
“G”, wire to terminal “LLCO”, and wire to terminal
“N.O.” of the water fill relay.
4.
1.
2.
3.
1.
2.
3.
4.