Service And Maintenance - Culligan M1 Series Installation, Operation And Service Instructions

Service and Maintenance

Serial Numbers
The Culligan M1 units have a serial number located directly behind the electronic controller on the side panel. Do not
remove or destroy these serial number labels.
They must be referenced if you require repairs or parts replacement under warranty.
LED Status Indicators
ON
[
LED Lights
POWER READY INLET PUMP HIGH
VALVE ON
OPEN
POWER READY INLET PUMP HIGH
VALVE ON
OPEN
POWER READY INLET PUMP HIGH
VALVE ON
OPEN
POWER READY INLET PUMP HIGH
VALVE ON
OPEN
POWER READY INLET PUMP HIGH
VALVE ON
OPEN
Troubleshooting
Problem
1. Unit does not start.
2. Unit running but not holding
high pressure.
30 Culligan® M1 Series Reverse Osmosis
OFF
]
The system has power but is not making water because either the storage tank is
full or the pretreatment equipment is in pretreat lockout mode.
TDS
The system is in a one-hour delay period. These delay periods occur when either
the system has lost electrical power, or the system has lost sufficient incoming
TDS
water pressure. During this delay period you may push the RUN NOW button
located on the bottom of the control; the system will skip the remaining portion of
the delay.
The system is in start-up flush mode or timed flush mode. These modes usually
last one (1) minute.
TDS
The system is making RO water.
TDS
On systems equipped with an optional TDS probe, the system has stopped mak-
ing water because the product TDS has risen above the required water quality
TDS
set by the DIP switches. If the system has stopped, it might indicate that the RO
membrane has failed or there might be some other problem with the system.
After resolving the problem, restart the RO by momentarily switching the power
OFF and then back ON. When the Power and Ready lights are ON, you can
press the RUN NOW button. The system should begin to produce RO water. Use
a handheld TDS meter to measure the TDS of the product water. If it remains
above the specified threshold, the system will turn back off after approximately
three (3) minutes.The system will continue running if you unplug the TDS meter
from the CP+ controller board or specify a DIP switch setting that corresponds to
a higher TDS threshold level.
Probable Cause
A. No power to unit.
B. Low feed pressure.
C. Inlet solenoid failure
D. Prefilter fouled.
A. Pump malfunction.
B. System pressure control valve
malfunction.
C. Concentrate flow too high.
D. Product flow too high.
Solution
Solution
A. Check circuit breaker.
B. Correct low pressure condition.
C. Replace solenoid
D. Replace cartridge
A. Replace pump.
B. Replace valve.
C. Check and adjust concentrate flow, re-
place tubing on A.
D. Test modules.
30 Cat. No. 01022940