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Section 4
START-- UP PROCEDURES
4.1 MOTOR ROTATION DIRECTION CHECK
After the electrical wiring has been done, it is neces-
sary to check the direction of the motor rotation.
With the control system in MANUAL mode, press
the ON/OFF pad twice in succession to bump start
the compressor. When looking at the motor from the
end opposite the compressor unit, the shaft should
be turning counterclockwise for direct drive pack-
ages and clockwise for gear driven packages. If the
motor shaft is not turning in the proper direction, dis-
connect the power to the starter and exchange any
two of the three motor leads, then re-check rotation.
A "Direction of Rotation" decal is located on the cou-
pling guard between the motor and compressor to
show proper motor/compressor rotation.
4.2 INITIAL START-UP PROCEDURE
The following procedure should be used to make the
initial start-up of the compressor:
1. Read the preceding pages of this manual thor-
oughly.
2. Be sure that all preparations and checks de-
scribed in the Installation Section have been
made.
3. Crack open the shut off valve to the service line.
4. Set the compressor in MANUAL mode and start
the compressor by pressing the ON/OFF pad.
8
5. Check for possible leaks in piping.
6. Slowly close the shut-off valve and check that the
maximum pressure (P2) and pressure differen-
tial (P2) are correctly programmed.
7. Observe the operating temperature. If the operat-
ing temperature exceeds 205ºF (96ºC), the cool-
ing system or installation environment should be
checked.
8. Observe return line sight glasses and mainte-
nance indicators.
9. Open shut-off valve to service line.
10. Reinspect the compressor for temperature and
leaks the following day.
4.3 SUBSEQUENT START-UP PROCEDURE
On subsequent start-ups, check that the proper lev-
el is visible in the fluid sight glass and simply press
the ON/OFF pad. When the compressor is running,
observe the control panel for maintenance indica-
tions.
4.4 SHUTDOWN PROCEDURE
To shut the compressor down, simply press the
ON/OFF pad. On MANUAL operation shutdown is
immediate; on AUTOMATIC operation, shutdown
is preceded by a 10 second UNLOAD mode.
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