Aquatec Watermaker AC 110, Техническое руководство

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Troubleshooting
Warning!
Noisy operation, vibrations, unsteady pressure.
Prolonged operation with the above error leads to failure of other components.
Noisy running, pulsating, unsteady and possibly low working pressure,
banging or strongly vibrating of high-pressure hose.
Air in system
To bleed air from the system a fresh water flush via the on-board pressurized
water system is often optimal for removing existing air from the system.
Check of sea water supply and venting:
Remove the high-pressure hose at high-pressure-pump that is connected to the membrane. Switch on the feed
pump. Water should now come out with some pressure at the outlet of the HP pump.
To collect the discharged water, put a ½" PVC hose over the thread of the high-pressure hose connection fitting.
If OK, reconnect the HP-hose and switch on the FP-pump and HP-pump for further venting of the system and start
plant up normally.
If no water flows out, remove the inlet hose from the HP pump for cross-checking. If water flows out at a rate of
approx. 20 litres/minute when the FP pump is switched on, the feed is OK. The fault is caused by sticky valves
inside the HP pump (possibly due to the system shut down for a longer period of time).
If no water escapes, the sea water inlet is blocked, or the feed pump may be defective.
Feed pump defective Replace or clean feed pump
Intake clogged Clean intake
Prefilter, strainer dirty Clean or replace filter
Dirty or defective valve of high-pressure pump.
Before removing the valves, it sometimes helps to run the system for a few minutes at low pressure to remove the
dirt.
Which of the 6 valves causes a problem cannot be seen from the outside. The upper 3 pressure valves rarely
cause problems. As a rule, it affects one of the 3 lower suction valves. To rectify the fault, unscrew the valve caps
(hexagonal screws, width across flats 22 mm or 19 mm) and pull out the valves with needle-nose pliers.
Since even the smallest barely visible contamination creates the problem, often no contamination can be detected.
Often disassembling, checking and reassembling the valve is sufficient to correct the fault.
A longer standstill time can also lead to a disturbed seawater supply by sticking of the valve plate with the valve
seat (usually it concerns the lower suction valves).
Refer to the parts diagrams on the following pages.
Very rarely, a dirty pressure control valve can also prevent pressure buildup. However, fluctuating working
pressure or irregular running is not a problem of the pressure control valve.
Note!
Grease the thread of the valve screws with metal-free anti seize paste for
stainless to prevent seizure.
Motor does not turn.
Motor drones
No voltage, fuse defective
Motor protection switch activated due to overload
Motor protection switch activated, no overload Open pressure-valve, motor capacitor defective
Check voltage, replace fuse
Reduce pressure
Adjust or replace motor protection switch
Motor protection switch located inside connection box
Oil leakage between pump head and crankcase
Crankcase gasket rings defective Replace gasket rings
Water leakage between pump head and crankcase
Plunger(s) defective / o-rings plunger defective
HP / LP seals defective Replace plunger(s)/ replace o-rings
Replace seals
Water in the crankcase (whitish or grayish discolored oil)
High humidity (mostly), wrong oil. Reduce oil change interval, use right oil