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MAINTENANCE
4.12.6 WATER FILTER - REPLACE FILTER CARTRIDGE
Legend for illust. Z22991
(A)
Location of filler neck for water tank (5)
(B)
Location of water filter (2), pump (3) and pressure compensation tank (4).
(1)
Access cover for water filter compartment
(2)
Water filter
(3)
Water pump
(4)
Pressure compensation tank
(5)
Water tank
(6)
Water tap
(7)
Filler neck for water tank
(8)
Relay
(9)
Circuit breaker 7,5 A
(10)
Refrigerator
Replace filter cartridge of water filter (2) as follows:
1. Open water tap (6) and drain all water from tank (5). Remove
access cover (1). Depress red pressure relief button on filter
header (if so equipped) to relieve pressure.
2. Unscrew bottom of housing. Remove large O-ring, wipe clean
of lubricant and set aside. Remove used cartridge and dis-
card. Rinse out bottom of housing and fill about 1/3 full with
water. Add 2 tablespoons of bleach and scrub cap and bottom
of housing with nonabrasive cloth. Rinse thoroughly.
3. Lubricate O-ring with clean petroleum jelly (Vaseline). Place
O-ring back into groove and smooth into place with finger.
Insert new cartridge over stand pipe in bottom of housing.
Cartridges with tapered ends need to be specifically installed
with the tapered end toward the threads of the housing.
4. Screw bottom of housing onto cap and hand tighten. DO NOT
over-tighten. Make sure cap standpipe slips into cartridge. Fill
water tank (5) with 50 liters of clear water. Depress pressure
relief button (if so equipped) to release trapped air.
5. Open water tap (6) and flush the new filter cartridge for a min-
imum of 5 minutes. The water must be completely clear
before closing the tap.
DO NOT drink the water of the cab water system. The cab
water system is not constructed as a drinking water system.
WARNING
4.12 EVERY 1000 OPERATING HOURS OR EVERY 6 MONTH
485
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