Scotsman CME506R AutoIQ - Manual (Page 10)

Electrical Connections: KCMR230 Fan Relay Kit (CME656R & CME806R only)
When 2 ice machines are connected to 1 remote
condenser coil, and the fan motor is powered from
the ice machines, a relay kit is required to connect
power to the fan motor.
1. Attach the relay box of the KCMR230 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.
4. Route the connecting wires from the second
machine’s fan wires to the relay kit terminal strip
posts marked: No. 2 Ice Machine.
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 KCMR230 kit has been accomplished, a check
of the electrical phasing is required.
The goal is to have each set of points in the relay
“break" the one power “leg" - so there is no voltage
potential when switching.
Note: 3 phase machines must have the same “leg"
or line connected to L3 on BOTH ice machines
contactors, and if there is a “wild leg" it must be
connected to L3 on BOTH ice machines.
A. Before initial start up. Compare the illustration of
the KCMR230 terminal strip to the connections at
the KCMR230:
• 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 L2).
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 terminals #2 and
#4, then between terminals #1 and #3.
List the voltages and compare to the table:
If there is full voltage where there should be NO or
little voltage:
Switch off ice maker number 2, and then switch off
ice maker number 1.
After the units have pumped down, disconnect the
electrical power. Do all wiring with the electrical
power disconnected to BOTH ice makers at the
source.
Reverse the connections at the KCMR230 terminal
strip marked ice maker #1 (put the wire that was
on terminal 1 on 2 and the wire that was on
terminal 2 on 1).
Reconnect electrical power.
CME506R, 656R, 806R: AutoIQ Cubers
January 2000
Page 10
KCMR230 RELAY BOX
Test Terminals
Voltage Should
Be
Tested Voltage
Was:
1-2 Full
1-3 No voltage
2-3 Full
2-4 No voltage
3-4 Full
1-4 Full