Welbilt Koolaire KD0270A, Technician'S Handbook, Page: 60 / 136

60 Part Number STH047 Rev01 10/18
WATER SYSTEM CHECKLIST
A water-related problem often causes the same symptoms
as a refrigeration system component malfunction.
Example: A water dump valve leaking during the freeze
cycle, a system low on charge, and a starving TXV have
similar symptoms.
Water system problems must be identified and eliminated
prior to replacing refrigeration components.
Water area (evaporator) is dirty
• Clean as needed
Water inlet pressure not between 20 and 80 psig (1–5 bar,
138–552 kPa)
• Install a water regulator valve or increase the water
pressure
Incoming water temperature is not between 35°F (1.7°C)
and 90°F (32.2°C)
• If too hot, check the hot water line check valves in
other store equipment
Water filtration is plugged (if used)
• Install a new water filter
Vent tube is not installed on water outlet drain
• See Installation Instructions
Hoses, fittings, etc., are leaking water
• Repair/replace as needed
Water float valve is stuck open or closed
• Clean/replace as needed
Water is spraying out of the sump trough area
• Stop the water spray
Uneven water flow across the evaporator
• Clean the ice machine
Water is freezing behind the evaporator
• Correct the water flow
Plastic extrusions and gaskets are not secured to the
evaporator
• Remount/replace as needed