Technical information

CHECKING
REFRIGERANT
CHARGE
Portable Chillers UGH024/1103
3-8 INSTALLATION
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.
Check refrigerant charge while the chiller is running. Check
the refrigerant charge through the sight glass. For water-
cooled models open the side panel for a short period of time
(15 seconds maximum) and check the sight glass; for air-
cooled models, locate the sight glass through the wire mesh
side panel. Use a flashlight, if necessary, and check the sight
glass:
l Under full load conditions, the refrigerant should be
clear (no bubbles).
l 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 and the unit is under warranty, contact
Conair service. Otherwise have a local, certified refrigeration
technician add refrigerant to the system.
WARNING: Refrigerant hazard
Only certified refrigerant technicians should
examine and correct problems involving the
refrigerant circuit.
WARNING: Hazardous substance
When burned, Freon R22 refrigerant forms
Phosgene gas. If the chiller is placed in the
vicinity of equipment with combustible systems,
the combustion air intake must be ducted in
from the outside and sealed in such a manner
as to prevent any refrigerant from entering the
combustion chamber. Refer to the Material
Safety Data Sheet for Freon R22. This sheet
explains the potential hazards and how to avoid
them.
Sight
glass