Koolaire KDT0300A, Technician'S Handbook

Page: 106 / 152

106 Part Number STH063 9/17
CHARGING PROCEDURES
mportant
The charge is critical on all Koolaire machines. Use
a scale or a charging cylinder to ensure the proper
charge is installed.
1. Cycle the toggle switch Off.
2. Close the vacuum pump valve and isolate the low and
high side access valves.
3. Add the proper refrigerant charge (shown on
nameplate) through the refrigerant charging access
valve.
4. Let the system “settle” for 2 to 3 minutes.
5. Cycle the toggle switch On.
,
Caution
Charging through the high or low side access valves can
result in immediate compressor failure. All refrigerant
must be added through the refrigeration access valve
on the front of the ice machine.
NOTE: Manifold gauge set must be removed properly to
ensure that no refrigerant contamination or loss occurs.
6. Make sure that all of the vapor in the charging hoses
is drawn into the ice machine before disconnecting
the charging hoses.
A. Run the ice machine in freeze cycle.
B. Open the high and low side valves on the
manifold gauge set. Any refrigerant in the lines
will be pulled into the low side of the system.
C. Disconnect the low loss fitting while the ice
machine is in the freeze cycle and install the
caps.
D. Check for leaks using an electronic leak detector.