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www.manitowocfsusa.com 800-225-9916 15
Start-Up Procedure:
CAUTION
Do not start the system while in a vacuum. Do not leave the system unattended until
normal operating conditions are achieved.
Operate the system for a minimum of two hours and perform checks of the following:
Check the compressor discharge and suction pressures to ensure they are in the
normal operating range.
Check the liquid line sight glass for proper refrigerant charge.
Monitor the compressor oil level (semi-hermetic compressors), add oil as
necessary to keep the level at ¾ sight glass when idle and ½ sight glass when
running.
Check the voltage and amperage at the compressor terminals. Voltage must be
within +10% or -5% of the rating indicted on the condensing unit name plate. On
three phase compressors, verify there is a balanced load.
Check all fans on the evaporator coil and condensing unit to be sure they are
operational and turning in the correct direction.
Check the piping and electrical connections for vibration. Add supports and
strapping if needed.
Check the crankcase heater operation (if equipped).
Set the defrost control time and verify the defrost initiation settings. See pages
18 - 19 for additional details.
Set temperature control to desired temperature range.
Check the compressor and evaporator superheat (reference pages 16 - 17).
After all system checks have been checked, properly adjusted, and verified, replace all
Schrader caps, service valve caps, electrical box covers, housings, etc. File a copy of
this manual for future reference.
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