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(©October, 2006)
CyberChiller Series Installation, Operation & Maintenance Manual
4-6
harmful contaminants left by the burnout. See section
4.3.4.1.2 (Burn-Out/Acidic Cleanup) for the proper
cleaning procedure.
CAUTION
Damage to a replacement compressor caused
by improper system cleaning constitutes abuse
under the terms of the warranty. This will VOID
THE COMPRESSOR WARRANTY. Always con-
sult the factory prior to replacing the compres-
sor.
If there is no acid in the oil, there has been a mechani-
cal failure. See section 4.3.4.1.1 (Standard Cleanout)
for the proper cleaning procedure.
CAUTION
POE oil is used in systems with R-407C refrig-
erant. If a replacement compressor is provided,
ensure that it is filled with POE oil before install-
ing.
4.3.4.1.1 Standard Cleanout Procedure
CAUTION
Avoid touching or contacting the gas and oil with
exposed skin. Severe burns will result. Use long
rubber gloves in handling contaminated parts.
NOTE
Cleaning operations must be performed by a jour-
neyman, refrigeration mechanic, or air condition-
ing technician.
1. Turn off power to the unit at the main power
disconnect switch.
2. Remove the burned-out compressor and install the
new compressor.
3. Remove the liquid line drier and install an over-
sized liquid line filter-drier (one size larger than the
normal selection size).
4. Evacuate the system according to standard
procedures. Normally, this will include the use of a
high-vacuum pump and a low-vacuum micron
gauge for measuring the vacuum obtained.
5. Recharge the system.
6. Turn on the power at the main power disconnect
switch and start the system.
4.3.4.1.2 Burn-Out/Acidic Cleanup Procedure
NOTE
Cleaning operations must be performed by a jour-
neyman, refrigeration mechanic, or air condition-
ing technician.
1. These systems should be cleaned using the
suction line filter-drier method.
2. Turn off power to the unit at the main power
disconnect switch.
3. Remove the burned-out compressor and install the
new compressor.
4. Install a suction line filter-drier designed for acid
removal.
5. Remove the liquid line drier and install an over-
sized liquid line filter-drier (one size larger than the
normal selection size).
6. Check the expansion valve, sight glass and other
controls to see if cleaning or replacement is
required.
7. Evacuate the system according to standard
procedures. Normally, this will include the use of a
high-vacuum pump and a low-vacuum micron
gauge for measuring the vacuum obtained.
8. Recharge the system through the access valve on
the suction line filter-drier.
9. Turn on power at the main power disconnect
switch and start the system.
10. The permanently installed suction line filter-drier
permits small-system cleanup to be completed in
one service call. The pressure drop across the
suction line filter-drier should be measured during
the first hour of operation. If the pressure drop
becomes excessive, the suction line filter-drier
should be replaced (See Sporlan Bulletin 40-10, for
maximum recommended pressure drop (PSI) for
suction line filter drier).
11. In 24 hours, take an oil sample. Observe the color
and test for acidity. If the oil is dirty or acidic,
replace the suction line filter-drier.
12. In 2 weeks, examine oil to determine if another
suction line filter-drier change is necessary.