Fisher & Paykel DishDrawer DD247 Service Manual page 43

43
Customers Complaint - glasses & cutlery have a cloudy white film on them and/or plates have a
white chalky film on them
How to resolve the Pipe Interrupter (Air Break) Function
A critical component in the performance of the water softener is the pipe
problem.
interrupter air break (PI). There is a certain amount of spray leakage from
the PI, which is used to provide water to the salt reservoir.
If the spray is inadequate, there will be insufficient water in the salt
reservoir to make brine.
If there is too much spray, then the excess bypasses the water softener
and defeats the softening process by pouring untreated water straight
into the tub.
To check that the amount of spray is appropriate:-
Fill the salt reservoir with water.
In diagnostics mode, turn on the fill water valve and the motor drain.
Water will flow out of the dispenser into the tub, as well as out of the
water softener overflow into the tub.
Observe the flow from the water softener overflow (beside the
dispenser). There should be a trickle (25-100 ml per minute). With
experience you can guess what is appropriate. If the trickle is outside
these rates, replace the water softener, as the PI is faulty.
To check that there is water in the salt reservoir, remove the drawer front
and observe the level of water in the tank. (A quick way to check that
there is water in the salt reservoir is to remove the salt bung and test the
water level by placing your finger down through the opening.)
Detergent or Rinse Aid in the Water Softener
If detergent or rinse aid is poured in to the salt reservoir it will destroy
the water softener. This could also happen if the salt bung is left off or
falls out. Evidence of this could be white streaks through the resin.