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3-8 l Installation
Checking the Refrigerant Charge
WARNING: Refrigerant hazard
Only certified refrigerant technicians should examine and correct problems
involving the refrigerant circuit.
All chillers are fully charged with R-134A refrigerant from Conair. Your chiller’s
model nameplate identifies the type and amount of total refrigerant charge
required.
Check the refrigerant charge while the chiller is running through the sight glass.
Locate the sight glass by removing the left-side panel and using a flashlight, if
necessary to check the sight glass:
❒❒
Under full load conditions, the refrigerant should be clear (no bubbles).
❒❒
Under low load conditions, when the Hot-gas Bypass valve is energized,
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 R-134A refrigerant to
the system.
Sight glass
NOTE: In this diagram, the
chiller’s panels are removed
for clarity.
✐
CAUTION: Always disconnect and lock out the main power sources before making
electrical connections. Electrical connections should be made only by a qualified
electrical technician.