Installation, operating and maintenance manual SKIT/S-DEB
3rd print version
page 71
12 – Troubleshooting
RWO GmbH
●
Marine Water Technology
●
Bremen
●
Germany
Issue 2014-04-10
Fault
Reason
Remedy
Insufficient pump capacity,
several metres pressure
difference between the
vacuum meters at the pump
and on the oil separator
cover
Coalescer packing is jammed
Flush manually
extensively by pressing
the button "Test". If that
does not prove to be
successful, remove and
replace coalescer
Motor protection switch
triggers
Motor burnt
Replace motor
Short circuit in supply line or
motor
Check motor and
supply line
Protection switch set too low
Adjust motor protection
relay according to the
motor value
Rotor of the pump blocked
Determine cause,
remove stator, replace
stator and rotor if
necessary
Pump shaft blocked
Loosen stuffing box
Piston valves do not
operate
Control air failure
Check compressed air
supply
No control voltage present
Check automatic
system (see chapter
5.4)
Piston ring defective
Replace upper part
Contamination in the solenoid
valve
Remove contamination
Solenoid valve defective
Check solenoid valve
by switching the main
switch on and off (you
can feel and hear the
function)
Piston is jammed
Make piston movable
System flushes
permanently or
uncommonly long
Non-return valve at bilge water
inlet does not close
Check, remove and
clean if necessary
Oil outlet blocked
Check, clean if
necessary
Flushing water pressure
insufficient
Check flushing water
pressure.
Flushing water flow
pressure between 1 and
max. 1.5 bar.
System detects oil but
discharges water
Cable connection control box /
electrode interrupted
Check cable
connection, replace if
necessary
Electrode clotted
Clean contact surfaces
of the electrode rods
