Identification:
Technical Bulletin:
Date:
Issuer:
Factory:
D02-D03-D04
CGX2008-01 (page 1 of 3), 2
nd
ed.
20 February 2008
R. Sartor (DWS Customer Support)
CGX – Dishwashing – Pordenone (I)
Subject
C8 alarm in UC / FL / HT with CWS
Model
Undercounter double skin, Front Loading and Hood Type high capacity with
water softener built-in (LS6EADPWS / WT38WS, LU7ADPWS /
WTU40ADPWS and LS14EAWS / WT65WS).
Problem
C8 alarm within few hours of working after installation.
Reason
In machine made during year 2007 (serial number starting with 7) we have
found 2 possible reasons:
1. loose cable to reed switch connector. This may give false contact and then
the circuit is open (not emptied boiler) even if the circuit is closed (emptied
boiler).
2. deflected magnetic field of floater magnet by rear panel in stainless steel
430 (only Undercounter LS6EADPWS / WT38WS and only for machines
with serial number from 72400001 to 80500001) whereas the rear panel is
very close to the water softener device.
In these installations the floater magnet cannot close the reed switch even
if the floater goes down regularly with the water.
1) Loose cable: from serial number 80300001 we have introduced a new
connector with more reliable cables fixing.
Action in
Factory
ELECTROLUX PROFESSIONAL SPA
MAILING ADDRESS TELEPHONE WEBSITE VAT NO.
VIA SEGALUZZA, 30
33170 PORDENONE - ITALY
++39 0434 380650 www.electrolux.com 00072220932
OFFICE ADDRESS TELEFAX E-MAIL ADDRESS
Furthermore on January 12
th
, 2008 we made a recall of all CWS machines in
CWH. All those machines have been updated.
OLD
NEW
2) Rear panel: from serial number 80600001 we have re-introduced stainless
steel 304 keeping the same spare part code 0L1420.
VIA SEGALUZZA, 30
33170 PORDENONE - ITALY
++39 0434 380636
++39 0434 385646
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Technical Bulletin (C8 Alarm).doc
Furthermore on February 13
th
, 2008 we made a recall of all Undercounter
LS6EADPWS / WT38WS machines in CWH. All those machines have been
updated.
Action in
Field
1) Loose cable: the “new” connector is perfectly interchangeable towards the
“old” one.
The connector and its 2 cables are part of the whole wiring harness 0L0775
so, for time being, we can supply some connectors (+ cables) for retrofit
whereas machines often stop for C8 alarm. A specific spare part code will be
soon released (the production code is 638687900).
Technicians have to cut 2 cables and make connections with a terminal block
as following:
Rear view
Frontal view
Rear view
Remove metal cap Remove ring nut
Remove screws (left and right side)
Remove clamp for rinse hose Pull the top of the WS device
Take the connector on the lower part
of the WS device
Cut cables
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2
Take the new connector make connections with a terminal block or by soldering
NEW
Action in
Field
2) Rear panel: it’s not mandatory to replace the rear panel in stainless steel
430.
The magnetic field intensity changes with inverse function of the square of
the distance. Therefore a small gap (10 mm is enough) between the rear
panel and the water softener device can avoid any problem.
Fit the connector and then put
the WS device back in its place
Fit a gasket 0L0114 near to upper floater (that detects salt water) and to
lower floater (that detects boiler emptying) / rear window as follow:
Do not fit too thick gasket otherwise the real panel may bulge.
This change will avoid also alarms “SAL 0” that appear seemingly
without any reason (i.e. even if there’s salt in the container and the
machine has already worked for some cycles since the last salt filling).
Front Loading and Hood Type high capacity with water softener built-in
(LU7ADPWS / WTU40ADPWS and LS14EAWS / WT65WS) have never had
rear panel in stainless steel 430 so they do NOT need any spacer between
panel and water softener device.
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