Manitowoc Ice S1800 service manual Water Dump Valve, Dump Valve Disassembly

Section 4 Maintenance

Water Dump Valve

The water dump valve normally does not require removal for cleaning. To determine if removal is necessary:

1.Locate the water dump valve.

2.Set the toggle switch to ICE.

3.While the ice machine is in the freeze mode, check the dump valve’s clear plastic outlet drain hose for leakage.

A.If the dump valve is leaking, remove, disassemble and clean it.

B.If the dump valve is not leaking, do not remove it. Instead, follow the “Ice Machine Cleaning Procedure”.

Important

The plunger and the inside of the enclosing tube must be completely dry before assembly.

NOTE: During cleaning, do not stretch, damage or remove the spring from the plunger. If it is removed, slide the spring’s flared end into the plunger’s slotted top opening until the spring contacts the plunger spring stop.

5.Remove the valve body.

6.Remove the tubing from the dump valve by twisting the clamps off.

7.Remove the two screws securing the dump valve and the mounting bracket.

Follow the procedure below to remove the dump valve.

!Warning

CAP

PLUNGER SPRING STOP

Disconnect the electric power to the ice machine at the electric service switch box and turn off the water supply before proceeding.

COIL SPRING

1.	If so equipped, remove the water dump valve shield
	from its mounting bracket.
2.	Lift and slide the coil retainer cap from the top of the
	coil.
3.	Note the position of the coil assembly on the valve
	for assembly later. Leaving the wires attached, lift
	the coil assembly off the valve body and the
	enclosing tube.
4.	Press down on the plastic nut on the enclosing tube

ENCLOSING TUBE

PLUNGER

DIAPHRAM

VALVE BODY

and rotate it 1/4 turn. Remove the enclosing tube,

plunger, and plastic gasket from the valve body.

NOTE: At this point, the water dump valve can easily be cleaned. If complete removal is desired, continue with step 5.

Dump Valve Disassembly

Part Number 80-1634-3 4-9