9.1 Oil Charging Procedure
The oil cooler must be filled with oil. The oil
separator should be filled to the top sight
glass. Pulling a vacuum on the oil separator
and drawing oil into the system through the oil
header is recommended for ease of oil charg-
ing. This method will also fill the oil header.
See section 3.3 for information on system oil
charge, and section 1.4 for approved oil types.
9.2 Testing the Control Circuit
Before testing the control circuit make sure
all service valves, ball valves and solenoid
valves are closed (with solenoid valves check
to make sure they are not manually open). Test
the control circuit verifying the operation of all
time delays and the economizer and oil feed
line solenoids.
Section 9 — Start-Up Procedure
9.3 Pre-Start-Up Check List
1. Open suction, discharge and economizer
service valves (also any service valves
upstream of liquid injection valves).
2. Open service valves in the oil feed lines.
3. Check high and low pressure switches for
proper settings and ensure they are wired
into the compressor control circuit. The high
and low pressure switches must be con-
nected to the compressor body, not at the
service valves or piping.
4. Check the reverse rotation protection switch
(low-pressure switch) to ensure that it is
connected to the compressor high pressure
switch port and that it is wired into the com-
pressor control circuit. The switch must be
located above the compressor high pressure
switch port location. 1/4" tubing must be
used for the pressure switch connection. Do
not use capillary tubing as this may cause a
time delay in the trip setting. (This does not
apply to systems using the newer LonCEM
Module or pressure transducer connections
for newer LonCEM).
5. Check oil pressure differential switch to
ensure that it is connected in the proper
location (high side on the pressure discharge
and low side at the oil inlet connection port).
Oil pressure cut-out must be set at 45 psid
(3 bar) with a 45-second time delay.
6. Check the LonCEM or Carlyle Electronic
Module and ensure that it is properly wired
into the control circuit and compressor.
7. The Heinemann/Airpax calibrated circuit
breakers recommended in this application
guide are required for each compressor
or a Carlyle Application Engineering
approved equivalent.
8. Connect a service gage to the compressor
discharge port (at the high pressure switch
connection location).
Caution:
The com-
pressor has an internal check valve, there-
fore the gage must be connected to the
high pressure switch port. Connect a service
gage to the oil feed manifold between the oil
line solenoid and the compressor. (Another
alternative is at oil fitting at back of motor).
9. Check direction of rotation of the compres-
sor. Proper rotation is critical. If the com-
pressor is operated in reverse, severe dam-
age may occur. To check for proper rotation
follow the steps in Section 9.4.
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