CellarPro 4000SH HORIZONTAL SPLIT SYSTEM 220V 50/60HZ, 16270 - Manual (Page 22)

22
Evacuation, Leak Detection, and Charging
Once the piping is installed, the following steps should be performed to ensure a
dry and leak-free system:
1. The Condensing unit is pre-charged with compressor oil. To avoid moisture
contamination of the oil, do not leave the service valves open to atmosphere
for more than 15 minutes.
2. Open the liquid and suction service valves on the condensing unit.
3. a. Dual Power Source / Valve Control: Supply power to the Evaporator only
- DO NOT connect power to the Condensing unit. Turn on the
temperature controller, which will energize and open the liquid line
solenoid valve. Verify the solenoid is powered as indicated by the
compressor icon ("snowflake") on the temperature controller display.
b. Not applicable
4. Pressurize the system to a maximum of 150PSIG of dry nitrogen. Mark the
pressure and hold for a minimum of 1 hour. If the pressure holds, proceed to
the next step, otherwise locate and repair the leak and repeat this step.
5. Evacuate the system to a minimum of 500 microns. If the vacuum is
achieved, proceed to the next step, otherwise locate and repair the leak and
repeat from step 4.
6. Disconnect the vacuum pump, but leave the system under vacuum. Use a
charging scale to accurately weigh in the refrigerant. Charge liquid R-134a
refrigerant through the liquid service valve according to the charge pounds
indicated in the "System R-134a Charge Guidelines" chart below. Additional
refrigerant may need to be added, as detailed in the next step. DO NOT USE
REFRIGERANT WITH ADDITIVES.