Installation Troubleshooting - Washtech CD240 Operator's Manual

Installation Troubleshooting

Machine not starting or filling
• Ensure water supply to machine is turned on.
• Ensure power supply to machine is turned on.
• Check that the water inlet hose isn't twisted or kinked.
Poor wash results
• Check that there are adequate pre-rinse processes in place.
• Ensure high quality non-foaming commercial dishwasher detergent has been connected at
the correct dosage for your site, water quality and application. If uncertain, consult a
chemical specialist.
• Ensure that the wash temperature is between 60°C and 65°C.
Chemical residue on items after the cycle
• Check water pressure, this is likely too low and below the minimum 200kPa required.
• Check that nothing is obstructing the wash & rinse arms.
• Check the rinse fluid dosage is not too high. If uncertain, please consult a chemical specialist.
Dishwasher is foaming
• Ensure high quality non-foaming commercial dishwasher detergent has been connected at
the correct dosage for your site and application. If uncertain, please consult a chemical
specialist.
• Allow wash water to heat to at least 60˚C prior to starting the first cycle as some commercial
dishwasher chemical will foam at low temperatures.
• Low water pressure can result in above average detergent concentrations. As low water
pressure also impacts rinse results, we recommended this is solved by installing a rinse pump
rather than compensating by reducing chemical dosages.
Other equipment in the kitchen has needed filters or has scale
• Due to the high temperatures in dishwashers, scale will build up in the wash tank, on the arms
and in the rinse tank. The incoming water should be treated. If uncertain, please consult a
water specialist.
• As with a Combi-Oven, high chloride levels will do irreversible damage to a number of the
components inside a commercial dishwasher. The incoming water should be appropriately
treated. If uncertain, please consult a water specialist.
Pawl drive not operating
• Clear the area around the limit switch on the roller table.
• Adjust the clutch tension of the Pawl Drive motor, the Pawl drive clutch tension can be
tightened by turning the 2 nuts at the bottom of the pawl drive shaft clockwise or loosened
by turning the 2 nuts anticlockwise.
(Note: the tension must be at a level where a person can grab the pawl drive with both hands
and stop the pawl drive motion).
Grinding noise escaping from the machine
• Wash pump rotation must be checked after installation to ensure correct direction (excessive
noise and damage with incorrect direction). Change phase connection if required.
Machine stops and refills during the commissioning stage
• Fit the curtains according to the Curtain labels on the front of the machine.
• Ensure the Scrap Trays are fitted in the Wash, Prewash and Rinse Zones.
12/5/2022 Washtech CD240L Operator Manual 9