Section 6 | Electrical System |
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CONTROL BOARD RELAYS
Function
The control board relays energize and
Specifications
Relays are not field replaceable. There are four relays on the control board:
Relay | Controls |
#1 | Contactor Coil |
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#2 | Water Dump Valve |
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#3 | Gear Motor |
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#4 | Float Valve Coil |
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Check Procedure
1.Leave all wiring connected and refer to the Energized Parts Chart. Then verify:
A.The relay should be energized.
B.The red control board LED is energized for the relay contacts being tested.
2.Check for line voltage at the control board.
A.Insert one electrical test lead to test L2 (wire #22).
B.Insert one electrical test lead to test for voltage through the contacts.
MAIN FUSE
Function
The control board fuse stops ice machine operation if electrical components fail, causing high amp draw.
Specifications
The main fuse is 250 Volt, 10 amp.
Check Procedure
!Warning
High (line) voltage is applied to the control board (terminals #21 and #22) at all times. Removing the control board fuse or moving the toggle switch to OFF will not remove the power supplied to the control board.
1.If any control board lights are energized, the fuse is good.
!Warning
Disconnect electrical power to the entire ice machine before proceeding.
2.Remove the fuse. Check the resistance across the fuse with an ohm meter.
Reading | Result |
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Open (OL) | Replace fuse. |
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Closed (O) | Fuse is good. |
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INSERT
TEST LEAD.
RELAY
CONTACTS
L2 | WIRE |
WIRE #22 | #90 |
INSERT
TEST LEAD.
Voltage Reading | Result | |
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Line Voltage* | Relay is good. | |
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No Voltage | Relay is defective. | |
Replace control board. | ||
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*Refer to model/serial label for correct voltage.
Part No. | Revised 8/2003 |
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