Grindmaster P400E - Manual (Page 11)

Page 11
Troubleshooting: Filling, Heating, and Brewing
Overfilling water
tank even when
power is off. Fill valve not sealing
properly.
Fill valve installed
backwards.
Water entering tank
continuously, usually
slowly.
Look for direction of
arrow on valve body.
Disassemble valve and clean out
dirt. Valve may need new plunger
if seal is worn.
If arrow on valve is pointing toward
water inlet, remove valve and install
correctly.
Problem Possible Cause Service Check Remedy
Filling Problems
The filling system consists of the following components:
• Liquid Level Control, located behind the brewer front panel.
• Liquid Level Probes, located on the tank top, secured by wing nut, under the top cover.
• Fill Valve, located behind the front panel.
Overfilling water
tank only when
power is on. High electrode
coated with lime or
faulty.
Missing or faulty con-
nection of C terminal
on level control to metal
Jumper HI terminal on
level control to metal
enclosure stops fill.
Jumper from C
terminal to metal body
stops fill.
Check connections.
Jumper from HI to C
or metal enclosure
does not stop fill.
Remove electrode assembly and
clean both probes. If this does not
work, replace assembly.
Make secure connection of C to
metal body.
Connect black lead for valve to
FILL on level control.
Replace level control.
Tank does not
refill. No power at
equipment.
No water at
equipment.
Water strainer
clogged.
No power to level
control.
Level control faulty.
Electrodes faulty.
Fill valve faulty.
Nothing operates.
Cracked water inlet
fitting.
Water pressure before
strainer but not after.
Check for 120V AC
across H and N ter-
minals on level control.
Disconnect probe wire
to HI terminal on level
control. Check for
120V at FILL terminal.
Tank fills only when
probe wire is discon-
nected from HI ter-
minal on level control.
120V is across FILL
and N on level control,
but no fill.
Check main switch or circuit
breaker, brewer's circuit breaker or
power switch if provided.
Make sure all water supply line
valves are open.
Remove and clean or replace
strainer's mesh.
If no voltage, check for loose or
broken wires.
If no 120V at FILL terminal,
replace level control.
Replace electrodes. If no remedy,
check for improper wiring or level
probe tip touching metal.
Disassemble valve and clean or
replace plunger if frozen. If plunger
is OK, coil may need replacement.
Shuttle Brewers & Airpot/Shuttle Brewers
Fill valve connected
to heat terminal on
level control.
Liquid level control is
faulty.