Westomatic Eco Encore, Техническое руководство

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70
FAULT FINDING - FRESH BREW UNIT (CONTINUED)
PROBLEM
CAUSE
SOLUTION
MOTOR
STARTS/STOPS IN
WRONG POSITION
MOTOR DOES NOT
START
FILTER PLATFORM
FAILS TO RISE
FULLY
FILTER PLATFORM
FAILS TO FALL
FREELY
Motor home switch not
operating correctly.
Poor continuity of input signal
from home switch.
Poor continuity of output
signal to brewer motor.
No output from CPU board
(240Vac)
Loss of continuity between
CPU board and brewer motor.
Thermal fuse in motor coil has
blown.
Motor coil has failed open
circuit.
Cam not turning, pin has
sheared
Cam follower bearing
collapsed/missing.
Filter insert incorrectly
located, sandwiched between
cylinder and platform.
Cam follower pillars
dirty/sticky.
Cam follower pillars
misaligned.
Return springs have become
weak.
Check, adjust or replace as
necessary.
Check continuity and connections
between brewer home switch and
CPU.
Check continuity and connections
between brewer motor and CPU
Check output signal, replace CPU
board if required.
Check and repair fault.
Check for cause and replace
brewer motor.
Replace brewer motor.
Replace shear pin
Replace bearing.
Release piston and cylinder and re-
locate filter insert.
Clean pillars and guide bores in
bearing blocks
Slacken-off re-align and secure
fixing screws,
Replace return springs (4 off).