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4. MAINTENANCE
4.3 TROUBLESHOOTING
PROBLEM
PROBABLE CAUSE
SOLUTION
Pump do not start
Pressure switch burned or
disconnected
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
calibrated
Dirty filter or membranes
Increase the pump pressure
switch calibration
(see pag. 4)
Clean or replace
High pressure heads during
commutation (> 0,2 Bar)
Accumulator pressure low
Inflate at a pressure of 2,8
Bar
Low production / high
pressure (> 7,5 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.
