Troubleshooting Guide; Error Messages - Hedson W-550 Mode D'emploi

TROUBLE SHOOTING GUIDE
BAD CLEANING RESULT
First check:
• That the flush pipes are not blocked (nr 6 and 7 picture 3) (see below)
• That the dynamic flush pipe (nr 7 picture 3) is moving correctly (if not, contact the your dealer)
• That the water level is correct (see the chapter "DAILY MAINTENANCE")
• That there is no foam in the water (see the chapter "DAILY MAINTENANCE")
• That the water is reasonably clean
• That the amount of granula is correct (see the chapter "CHANGE OF WATER")
• That the DRESTER original granula is being used
• That no granula are in front of the dividing plate (see the chapter "DAILY MAINTENANCE")
• That the hoses connecting the pump with the flush pipes have not worked loose from the pump or from the flush pipe.
If all the above items are correct, you should check the wear of the pump (nr 8 picture 3). This could be the case as the
machine approaches 10,000 wash cycles. The easiest way to check the wear of the pump is to have a certificated electrician
measure the current when the machine is operating. If the current is below 10 A per phase (on a 380-420V machine), the
pump is worn and needs to be replaced.
FLUSH PIPES ARE BLOCKED
A flush pipe (nr 6 and 7 picture 3) may be blocked for the following reasons:
• A valve cap or some other foreign object has got trapped in the nozzle of the flush pipe
• The machine has been operating with too low a water level
• There is too much granula in the machine
• Non approved granula have been used
• There is foam in the water because a by DRESTER non approved detergent has been used
• There is foam in the water because it is very dirty
You can easily check if a flush pipe is blocked: Start the machine without any wheel in the wash room. Open the lid
quickly. The pump will then stop, but you will have enough time to see if granula and water are coming out of both pipes.
In case a pipe is blocked, dismantle the shovel (nr 4 picture 3) (undo 2 M6 nuts), remove the rubber nozzle (nr 5 picture
3) and clear the blocked pipe by means of compressed air for example. Then start a short wash cycle to really clean out the
pipes and finally fit the flush nozzle and shovel back into place.
If a valve cap or some other object blocks the pipes repeatedly, this must be removed from the granula.
We repeat that we strongly recommend that the valve cap is removed from the wheel before washing as it can cause
operational disturbances if it falls off during the wash cycle (see the chapter "INSTUCTIONS OF USE").

ERROR MESSAGES:

The LCD-display (nr 1 picture 1) can show three different error messages:
"Error pump" – means that something is wrong with the pump motor.
"Error rotation" – means that something is wrong with the motor that rotates the wheel.
"Error flush pipe" – means that something is wrong with the dynamic flush pipe (nr 7 picture 3).
INSTR: 9594 REV: 100819/ Bom ÄM: 1758, 1812 GODK: SID: 6 / 32