Testing The Water Fill Relay; Testing The Low Water Relay - Market Forge Industries ST-6-TGG Installation, Operation And Maintenance Manual

4. TROUBLESHOOTING (cont'd.)
WARNING: When you turn the power on, there are
terminals that carry 120 volts. Protect the ends of
these disconnected wires to prevent shorting to hot
leads.
4. Turn power ON. Using the voltmeter, check that
the power being supplied to terminals L1 and L2 is
120 volts, plus 10%, minus 15%.
4.4.1

Testing the Water Fill Relay

1. 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
terminals 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.
2. 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. Touch-
ing the probes to L2 and N.C. should show
120 volts.
Form No. S-4846 Rev. A 11/98
3. Disconnect the jumper.
4.4.2

Testing the Low Water Relay

1. With the power ON, the LED next to the Low Water
Relay should be OFF. Using the voltmeter, touch-
ing the probes to the L2 and N.O. terminals next to
this relay should show no voltage. Touching the
probes to terminals L2 and N.C. should show
120 volts.
2. Connect the jumper to terminals "G" and "LLCO."
The LED next to the Low Water Relay should turn
ON immediately.
3. 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.
4. 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.
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