26
STARTUP
Pre-Startup:
After the installation and immediately before the
startup of the condenser be sure that these items
have been checked.
1.
Verify that electrical power is available to
the unit.
2.
Verify that any remote stop/start device is
requesting the condenser to start.
While performing the Startup, use the Condensing
Startup Form at the back of this booklet to record
motor amps and any other comments.
Startup:
Use the General Check List at the top of the
Startup Form to make a last check that all the
components are in place and the power supply is
energized.
Note: Condensing fan operation should start
with the first compressor.
Cycle through all the compressors to confirm that
all are operating within tolerance.
When unit is running, observe the system for a
complete operation cycle to verify that all systems
are functioning properly.
While performing the check, use the Condenser
Startup Form to record observations of amps and
refrigerant pressures.
When all is running properly, place the controller
in the Run mode and observe the system until it
reaches a steady state of operation.
Before leaving installation, a complete
operating cycle must be observed to
verify
that
all
components
are
functioning properly.
COMPRESSOR ROTATION
Scroll compressors are directional and
will be damaged by operation in the
wrong direction. Low pressure switches
on
compressors
have
been
disconnected
after
factory
testing.
Rotation must be checked by a qualified
service technician at startup using
suction and discharge pressure gauges
and any wiring alteration must only be
made at the unit power connection.
3-PHASE ROTATION
Rotation must be checked on all
MOTORS AND COMPRESSORS of
three phase units. Condenser fan motors
must all be checked by a qualified
service technician at startup and any
wiring alteration must only be made at
the unit power connection. Variable
frequency drives are programmed to
automatically rotate the fan in the correct
rotation. Do not rely on fans with
variable frequency drives for compressor
rotation.
CAUTION
CAUTION
CAUTION
