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regulates refrigerant flow to control oil temperature entering the bearings. There is always a flow
of refrigerant bypassing the thermal expansion valve (TXV). The bulb for the expansion valve is
strapped to the oil supply line leaving the heat exchanger and the valve is set to maintain 110 F
(43 C).
Note: The expansion valve is not adjustable. Oil sump temperature may be at a lower tempera-
ture.
Remote Start/Stop Controls
A remote device, such as a time clock which uses a set of contacts, may be used to start and
stop the machine. However, the device should not be programmed to start and stop the
machine in excess of 2 or 3 times every 12 hours. If more than 8 starts in 12 hours occur, then
an Excessive Starts alarm is displayed, preventing the machine from starting. The operator
must reset the alarm at the LID in order to override the starts counter and start the machine. If
Automatic Restart After a Power Failure is not activated when a power failure occurs, and the
remote contact is closed, the machine will indicate an alarm because of the loss of voltage.
The contacts for Remote Start are wired into the starter at terminal strip TB5, terminals 8A
and 8B. See the certified drawings for further details on contact ratings. The contacts must be
dry (no power).
Spare Safety Inputs
Normally closed (NC) digital inputs for additional field-supplied safeties may be wired to the