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Final Wiring Check
1. Check the power supply circuit. The voltage and fre-
quency tolerance must match those of the 7800
SERIES Relay Module. A separate power supply circuit
may be required for the 7800 SERIES Relay Module.
Add the required disconnect means and overload pro-
tection.
2. Check all wiring circuits and complete the Static Check-
out before installing the 7800 SERIES Relay Module on
the subbase.
3.
Install all electrical connectors.
4. Restore power to the panel.
STATIC CHECKOUT
After checking all wiring, perform this checkout before
installing the 7800 SERIES Relay Module on the subbase.
These tests verify the Q7800 Wiring Subbase is wired
correctly, and the external controllers, limits, interlocks,
actuators, valves, transformers, motors and other devices are
operating properly.
See Table 4. For further checkout and troubleshooting, see
form 65-0229.
WARNING
Explosion Hazard, Electrical Shock Hazard. Can
cause serious injury, death or equipment damage.
1. Close all manual fuel shutoff valve(s) before starting
these tests.
2. Use extreme care while testing the system. Line voltage
is present on most terminal connections when power is
on.
3. Open the master switch before installing or removing a
jumper on the subbase.
4. Before continuing to the next test, be sure to remove
test jumper(s) used in the previous test.
5. Replace all limits and interlocks that are not operating
properly. Do not bypass limits and interlocks.
EC7820A 7800 SERIES RELAY MODULES
CAUTION
Equipment Damage Hazard. High voltage dielectric
test can cause equipment damage.
Do not perform a dielectric test with the 7800 SERIES Relay
Module installed. Internal surge protectors break down and
conduct current, causing dielectric test failure and destruction
of the internal lightning and high current protection.
WARNING
Equipment Shutdown Hazard. Improper procedure
causes lockout.
Clipping and removing a Site Configurable Jumper after 200
hours of operation results in a hard lockout (Code 110).
Equipment Recommended
1. Voltmeter (1M ohm/volt minimum sensitivity) set on the
0-300 Vac scale.
2. Two jumper wires; no. 14 wire, insulated, 12 in. (304.8
mm) long with insulated alligator clips at both ends.
General Instructions
1. Perform all applicable tests listed in Table 4, in the order
listed.
2. Make sure all manual shutoff valve(s) are closed.
3. For each test, open the master switch and install the
jumper wire(s) between the subbase wiring terminals
listed in the Test Jumpers section.
4. Close the master switch before observing operation.
5. Read the voltage between the subbase wiring terminals
listed in the Voltmeter column.
6. If there is no voltage or the operation is abnormal, check
the circuits and external devices as described in the last
column.
7. Check all wiring for proper connections, tight terminal
screws, and appropriate wire and wiring techniques.
Replace all damaged or incorrectly sized wires.
8. Replace faulty controllers, limits, interlocks, actuators,
valves, transformers motors and other devices, as
required.
9. Make sure normal operation is obtained for each
required test before continuing the checkout.
10. After completing each test, be sure to remove the test
jumper(s).
5
66-1091—08
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