Manitowoc Ice CM MODEL STH003 - Manual (Page 73)

73
Charging Procedures
IMPORTANT
The charge is critical on all Manitowoc ice
machines. Use a scale to ensure the proper
charge is installed. A quick disconnect is required
for the high side connection
1. Be sure the toggle switch is in the OFF position.
2. Close the vacuum pump valve and the low side
manifold gauge valve.
3. Open the high side manifold gauge valve.
4. Using a digital scale add the proper refrigerant
charge (shown on nameplate) through the high
side.
5. Close/isolate the refrigerant cylinder.
6. Let the system “settle” for 2 to 3 minutes.
7. Place the toggle switch in the ICE position.
8. Close the high side on the manifold gauge set.
NOTE: Manifold gauges must be removed properly to
ensure that no refrigerant contamination or loss occurs.
A quick disconnect is required for the high side
connection.