Hoshizaki HUR40A(-D) - Manual (Page 61)

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Note: Jumper (color: white) between pins 7 and 8 of connector K151 may not be
present on all units, but this will not adversely affect performance.
CAUTION
Before diagnosing and/or servicing the unit, confirm that you have the proper
wiring diagram by checking against the diagram located inside the front panel.
C1. HUR68A, HWR68A (auxiliary code Q5 and earlier)
115/60/1
Transformer Output
10V at 115V