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REFRIGERANT CHARGE
The liquid charging method is recommended for complete
charging or when additional charge is required.
The 30XA units are shipped from the factory with a full
charge of R-134a. The unit should not need to be charged at
installation unless a leak was detected in Step 6 — Leak Test
Unit section. If dehydration and recharging is necessary, use
industry standard practices or refer to Carrier Standard Service
Techniques Manual as required.
IMPORTANT: These units are designed for use with
R-134a only. DO NOT USE ANY OTHER refrigerant in
these units.
CAUTION
When charging, circulate water through the cooler at all
times to prevent freezing. Freezing damage is considered
abuse and may void the Carrier warranty.
CAUTION
DO NOT OVERCHARGE system. Overcharging results
in higher discharge pressure with higher cooling fluid con-
sumption, possible compressor damage, and higher power
consumption.