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Check refrigerant charge while the chiller is running:
Check the refrigerant charge through the sight
glass.
Use a flashlight, if necessary, and check the liquid-line
sight glass:
● Under full load conditions, the refrigerant should be
clear (no bubbles).
● Under low load conditions, when the hot-gas bypass
valves are operating, bubbles may be visible in the
sight glass. This is normal.
If the charge is low contact Conair service or have a local, cer-
tified refrigeration technician to add refrigerant to the system.
C
HECKING THE
REFRIGERANT
CHARGE
Series 1 Portable Chillers, TIC Control UGH016/0500
5-6
MAINTENANCE
Sight
glass
WARNING: Refrigerant hazard
Only certified refrigerant technicians should
examine and correct problems involving the
refrigerant circuit.
All chillers are fully charged with refrigerant at the factory.
Your chiller’s model nameplate identifies the type and amount
of total refrigerant charge required.