American Dryer Corp. AD-840 - Manual (Page 25)

American Dispensing Company 88 Currant Road / Fall River, MA 02720-4781
22
SECTION VII
FILTER MAINTENANCE
There are three water filters, a strainer and one air filter in every machine. Observe the following procedure
when changing filters:
A. WATER FILTER/STRAINER REPLACEMENT
WARNING: FILTER HOUSINGS ARE HEAVY. BE CAREFUL AND ANTICIPATE THE
WEIGHT WHEN REMOVING THEM.
1) Before unscrewing the filter or strainer housing to change a filter or strainer, shut off water supplied
to the filter and relieve line pressure by opening a nearby valve.
FOR STRAINER CLEANING AND REPLACEMENT (dia-
gram 2) Shut off incoming water supply and relieve pres-
sure opening a nearby valve. Close valve after flow stops.
FOR SEDIMENT PREFILTER AND CARBON FILTER replacement, shut off main water valve (dia-
gram 3) and relieve pressure by opening either one of the PVC sampling valves near the filters. Close
sampling valve after flow stops.
FOR POLISHING FILTER replacement, shut off the water tank PVC ball valve (diagram 4) and
relieve pressure by vending one (1) gallon of water. Unplug dispensing pump from the power outlet
(diagram 5) after vend stops.
strainer
main water valve
diagram 2
diagram 3
diagram 4 diagram 5
PVC ball valve