Stulz CeilAir CW - Burn-Out;Acidic Cleanup Procedure

77OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
4.3.4.3 BURNOUT/ACIDIC CLEANUP PROCEDURE
4. Remove the liquid line drier and install the appropriate liquid line filter-drier.
5. 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.
6. Recharge the system.
7. Turn on the power at the main power disconnect switch and start the system.
4.3.4.3 Burn-Out/Acidic Cleanup Procedure
NOTE Mechanic or Technician Required
Cleaning operations must be performed by a journeyman refrigeration mechanic or air conditioning
technician.
1. These systems should be cleaned using the suction line filter-drier method.
2. If your unit is equipped with an E² controller, turn the A/C unit off by pressing and holding the Enter key.
3. Turn off power to the unit at the main power disconnect switch.
4. Remove the burned-out compressor and install the new compressor.
5. Install a suction line filter-drier designed for acid removal.
6. Remove the liquid line drier and install the appropriate liquid line filter-drier.
7. Check the expansion valve, sight glass, and other controls to see if cleaning or replacement is required.
8. 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.
9. Recharge the system through the access valve on the suction line filter-drier.
10. Turn on power at the main power disconnect switch and start the system.
11. The 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 the maximum recommended pressure drop for the suction line filter drier).
12. 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.