Technical information

12/01/02

7. INLET WATER VALVE: Hoshizaki uses inlet water valve

solenoid to fill the reservoir for ice making. This constant

duty solenoid valve is very reliable however, in areas of

hard water and high levels of chlorine, the diaphragm is

susceptible to failure.

Water quality is constantly changing and local municipali-

ties are now adding higher levels of chlorine, chloramine,

and chlorine dioxides to the water. These agents can dam-

age rubber parts and effect the diaphragm life.

The diaphragm is made of rubber and ABS and has a bleed

port on the inside ABS piece. This port allows the pressure

to balance on the top and bottom of the diaphragm so that

the valve will open and close properly with the spring

pressure. If the rubber becomes dry and brittle or the

bleed port is plugged with trash or debris, the valve will

leak by. In this case the valve can be disassembled for

cleaning and the diaphragm and inlet screen can be cleaned

or replaced. It is important to remember that the warranty

covers repair of defects and not cleaning. Should the valve

be scaled or dirty, it should be cleaned and bill to the cus-

tomer.

Below you will find an exploded view of the valve assem-

bly and instructions for reassembly of the valve. When

replacing the diaphragm and re-assembling the

valvereplacing the diaphragm, it is important that the plunger

is in the correct position. This plunger has a white plastic

seal on one end and is metal on the other end. The white

seal end of the plunger must be in contact with the dia-

phragm in order for the valve to work correctly.

12/20/03

2/20/03