© 2009 Viking Preferred Service
26
Water Valve
The water valve supplies water to the reservoir for
producing ice. The valve opens for one and a half
minutes during initial start up or power up of the
unit and opens for two minutes at each harvest
cycle after the drain valve has closed.
The valve has a built-in screen in the water supply
fitting. This screen will filter out any large particles
and, over time, these particles will accumulate
and restrict water supply. If this is found, simply
clean the screen with a toothbrush to remove the
particles. DO NOT REMOVE THE SCREEN FROM
THE VALVE.
To check water valve
1.
Check the solenoid actuator for resistance. If
no resistance is found, the valve will need to be
replaced.
2. Check to see if the valve will seat properly. Foreign
particles that may have passed the filter could
damage the seat of the valve. To make sure the
valve is seating, make sure power is disconnected
to the unit, hook up the water supply, turn on the
water supply, and see if there is any water flowing
in the water lines. If water is present and flowing,
the valve will need to be replaced.
3. Check the flow rate of the reservoir water line.
Using a stopwatch or a watch with a second hand,
see what amount of time it takes to fill up a one
quart container. The time should be 60 seconds to
get the 0.25 gpm specification of valve.
• If it takes substantially less than 60 seconds,
check the water supply pressure to make
certain it is not above 120 psi static
pressure. If it is not, the metering orifice of
the valve has been damaged or changed
and the valve will need to be replaced.
• If it takes substantially more than 60
seconds, check the water supply pressure
to make certain it is not below 20 psi static
pressure. If it is not, make certain the valve
screen filter is filter is clean and pressure is
above 20 psi, the valve is defective and will
need to be replaced.
Removing Water Valve
1. Disconnect power, water line, and drain line.
2. Remove the back panel and lower shroud
(see
Figure 6
).
3. Remove the blue wire and white wire at the
water valve terminals.
4. Loosen the reservoir water supply line
compression nut from the bottom of the water
valve.
5. Remove the two screws securing the water
valve to the flange of the cabinet
(see
Figure 14
).
6. Remove the water valve.
Installing Water Valve
Reverse the removal procedure for installation (see
above). Make certain that the reservoir water line
is in the reservoir inside the unit and there are no
water leaks anywhere after installation.
Two screws that secure
the water valve
to the cabinet flange.
Figure 14
Inlet
water screen
Supply line
compression
nut
Service Diagnostics and Procedures
(Valves)
