Fan Relay Kit
When
two CME456Rs
are located near each other
and are connected to the
same ERC211
remote
condenser, a fan relay kit,
KCMR120
is required to
operate the condenser’s fan motor.
1. Attach the relay box of the KCMR120 to a
location that is convenient for installation and
future service.
2. Attach a solid earth ground wire to the ground
screw.
3. Route the connecting wires from the first ice
machine's fan wires to the relay kit terminal strip
posts marked:
No. 1 Ice Machine
.
•
Put the Hot (line) wire on Terminal 1 and the
Neutral wire on Terminal 2.
4. Route the connecting wires from the second
machine's fan wires to the relay kit terminal strip
posts marked:
No. 2 Ice Machine.
•
Put the Hot (line) wire on Terminal 3 and the
Neutral wire on Terminal 4
5. Attach wires at the fan relay kit terminal strip
marked: To Remote Fan, and route them to the
remote condenser electrical connection.
6. Make the proper electrical connection at the
junction box.
Conform to all applicable codes.
Phasing:
To be certain that a reliable installation
of the KCMR120 kit has been accomplished, a
check of the electrical phasing is required.
If the power is not connected properly the
relay will fail in a cycle or two and there may
be an electrical overload.
A. Before initial start up. Compare the illustration
of the KCMR120 terminal strip to the connections
at the KCMR120:
•
Terminals 1 and 3 must be connected to a
common leg (such as L1).
•
Terminals 2 and 4 must be connected to a
common leg (such as N).
B. After initial start up, test with a volt meter
(compressors must be ON).
1. Switch on ice maker #1, then ice maker #2.
2. Test with a volt meter between the terminals
and ground.
3. List the voltages and compare them to what
they should be.
Tested Voltage Should Be
•
Terminal #1 to ground: 104 to 126 volts
•
Terminal #2 to ground: near zero
•
Terminal #3 to ground: 104 to 126 volts
•
Terminal #4 to ground: near zero
Tested Voltage Was:
•
Terminal #1 to ground: _____
•
Terminal #2 to ground: _____
•
Terminal #3 to ground: _____
•
Terminal #4 to ground: _____
If the voltages are
not
correct:
A. Switch off ice maker number 2, and then switch
off ice maker number 1.
B. After the units have stopped,
disconnect the
electrical power. Do all wiring with the
electrical power disconnected to BOTH ice
makers at the source.
C. Reverse the connections at the KCMR120
terminal strip that measured incorrectly.
D. Reconnect electrical power.
KCMR120 RELAY BOX
CME456R
December 2000
Page 10
Electrical Shock Hazard
Disconnect Electrical
Power Before Beginning
