21
The reverse osmosis membranes have an average working life of 7 years. After 5 years they may start
to degrade. If in doubt as to their condition contact a Schenker service point and replace as a matter of
course after 7 years.
4. MAINTENANCE
4.3 TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
SOLUTION
Pump do not start
Pressure switch burned or dis-
connected
Total electronic failure
Restore
Activate the pump with
the miscoswitch
Pump start but stop at high
pressure
System is blocked
Dirty pump filter
Dirty membranes
Trouble in the cycling system
Perform Reset
Replace cartridge
Perform cleaning cycle
Contact a Schenker service
point
While functioning the
pump starts-stops
Pump pressure switch not cali-
brated
Dirty filter or membranes
Increase the pump pressure
switch calibration
(see pag. 4)
Clean or replace
Amperage increased
Pump head damaged
Replace pump head
Metallic and buzzing pump
noise
Insufficient inlet pump water
flow
Check installation, water
inlet, net filter
Low production / normal or
low pressure
Exhausted batteries
Air in the plant
Seal system leak
Check battery charge
Perform bleeding
Contact a Schenker service
point
Low production / high
pressure (> 9 Bar)
Cold sea water
Filter clogged
Dirty membranes
Normal operation
Clean filter
Perform cleaning cycle
Leaking in the plant
Loose connectors
ERS loss
Tighten connectors
Contact a service point
Probe (system pressure switch ) troubleshooting:
If the system goes frequently in blocked position (generating the message SYSTEM BLOCKED)
without hydraulic problems, this could possible that the origin of fault is a malfunctioning of the
probe (pressure switch)
The pressure switch can be tested with following procedure:
1.
De-connect the pressure switch cables.
2.
Activate the by-pass and start the system.
3.
Check with a meter in ohm position, between the cables PS/PS, the functioning of the pressure
switch. If working, the pressure switch closes and open the circuit alternatively each 3-4 seconds.
4.
If the pressure switch is always close or open during the functioning of the watermaker, it is out
of service and must be replaced.
