Replacing a relay – Gasboy 1000 Series FMS Diagnostic Manual User Manual
Page 133
GASBOY Series 1000
7-14
03/07/03
REPLACING A RELAY
WARNING
To avoid electrical shock and possible equipment damage you
must turn off the circuit breaker which provides system power as
well as the circuit breakers for all attached pumps/dispensers.
Remove Old Relay
1.
Locate the relay module in the Series 1000 post which contains the inoperable relay.
2.
Record the positions of all field wiring as it is attached to the Pump Power Terminal Block of
the relay module. Label any unmarked or common colored wires to make them easily
identifiable later.
3.
Disconnect all of the field wiring from the Pump Power Terminal Block by loosening the
screws and removing the wires.
NOTE:
If there is enough slack in your field wiring, you may not need to disconnect all the
wiring.
4.
Locate the two mounting screws (one at each end of the relay module). Loosen the screws
until the relay module may be pulled forward and away from the mounting bracket.
5.
There are 4 relay drive wires (red, violet, orange, and black) attached to the relay module.
Loosen the screw on each relay until the relay drive lines may be removed.
6.
Locate the inoperable relay by matching the relay position to the Pump Power Terminal Block
of the relay module. Loosen the three screws which have wires connected to them (noting
the wire positions) until the wires may be removed from the relay.
7.
Locate and remove the two screws that secure the relay to the relay module.
Install New Relay
8.
Install the new relay so it is positioned in the same manner as the existing relays. Secure it
with the two screws from the previous step.
9.
Reconnect the three relay wires to their proper positions. Reconnect the four relay drive lines
to the relay module. See page 3-6 for proper wire positions.
10. Position the relay module into the vacated slot of the mounting bracket lining up the mounting
screws with the holes in the mounting bracket. Tighten the mounting screws until the relay
module is secure.
11. Attach all field wiring to the proper positions of the Pump Power Terminal Block. Use the
positions that were recorded in Step 2.