Water Tec CP Operating Manual - Trouble Shooting Guide
Water Tec Int’l. Inc. Version 02A
19
TROUBLE SHOOTING GUIDE
SYMPTOM
POSSIBLE CAUSE
SOLUTION
RO unit will not start
No electrical power to control circuit
Check power supply
On/Off Switch
Check power / replace
Time delay not operating
Check power / replace
Fuse
Check / replace
Coil in magnetic motor starter burned out
Check / replace motor or coil
Liquid Level Control Relay
Check for power
Pump motor
Check / replace
Low Pressure
Low feed pressure
Incoming feed water supply may be off
Check
Incoming feed water supply line may be
Check / replace line if kinked
Restricted / under sized
Upstream pretreatment
Check all pretreatment
Pre-Filter may be clogged / dirty
Check / replace
Low Pressure Switch
Check for power / replace
No high pressure
Reject valve open too far
Check / adjust
Reject bypass may be open
Check / adjust
High pressure gauge may be broken
Check / replace
Restriction in tubing to gauge
Check / replace / replace if kinked
Pump impellers may be worn
Check / replace impellers or pump
Low water volume to pump
Check
No waste water
Waste Valve may be closed
Check / open / adjust
Clogged drain line
Check / replace / replace if kinked
No product water or low
Pump pressure may be too low
Check / adjust
Product water
Waste valve open too far
Check / adjust
Membranes may be fouled / dirty
Check / clean / replace
Water temperature may be low
Check
High TDS in permeate water TDS monitor or probe
Check / adjust / replace
Low pump pressure
Check / adjust
Membranes may be clogged / dirty
Check / clean / replace