Identification:
ELECTROLUX PROFESSIONAL SPA
MAILING ADDRESS TELEPHONE WEBSITE VAT NO.
VIA SEGALUZZA, 30
33170 PORDENONE - ITALY
++39 0434 380650 www.electrolux.com 00072220932
Technical
Bulletin no:
Date:
Issuer:
Factory:
D06
CGX2006-21 (page 1 of 6), 2
nd
ed.
27 April 2007
R. Sartor (DWS Customer Support)
DW Vallenoncello - Italy
Subject
Alarms 23, 24, 37, 38, 57 and 75 in WTM & RTC / WTC
Model
Whole Modular Rack Type (WTM series) range and Compact Rack Type
(RTC / WTC series) range with relevant Drying Tunnels.
Problem
Any of alarms above (all related to motor thermal protector tripping) appears
even if the thermal protector in start-up switch 0L1036 (load 3A÷12A) or
0L1222 (load 1.25A÷5A) has not tripped out.
Reason
There may be a false contact in the control unit device keeping contacts open.
In any case there is NOT any safety issue since the thermal protector
works properly even in case of defective control unit.
Action in
Factory
The start-up switch supplier (Telemecanique) has introduced improvements to
avoid false contact since end of year 2005. Therefore start-up switches with
their serial number from 060101 onwards have not problems of false contact.
control unit
base of power LUCA 1X B LUCA 05 B LUCA 12 B LUCA 18 B LUCA 32 B contacts
spare part code load LUB 12 LUB 32 0,35A÷1,4A 1,25A÷5A 3A÷12A 4,5A÷18A 8A÷32A
LUA1C11 /
LUFC00
0L1036
3A÷12A X X
X
0L1016 8A÷32A X X
0L1017 3A÷12A X X
0L1222
1,25A÷5A X X
X
0L1029 4,5A÷18A X X
0L1297
0,35A÷1,4A X X
X
Start-up switches 0L1016 (load 8A÷32A, 0L017 (load 3A÷12A) and 0L1029
(4,5A÷18A) have not contacts (see table above) since they are not used for
motors. Therefore they cannot be involved in this problem.
OFFICE ADDRESS TELEFAX E-MAIL ADDRESS
VIA SEGALUZZA, 30
33170 PORDENONE - ITALY
++39 0434 380643
++39 0434 385646
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OK. It has NOT problems of false contact
3rd and 4th digit = 06
It may have problems of false contact
3rd and 4th digit = 05
3rd and 4th digit = year of production, 5th and 6th digit = week of production, 7th digit = day of production
2T05335 = made on Friday of week 33 in year 2005
2C06113 = made on Wednesday of week 11 in year 2006
Since serial number 71700001 we have introduced gold-plate auxiliary
contacts LUFC00 0L1441 instead of contacts LUA1C11 (no spare part code
available) in order to improve the reliability of open/close device.
All motor start-up switches 0L1036, 0L1222 and 0L1297 in the Pordenone
warehouse will be soon recovered.
Gold-plate auxiliary
contacts 0L1441
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2
Action in
Field
Replace the clip-on auxiliary contacts unit only when it’s really needed (alarm
23, 24, 37, 38, 57 or 75 on the display and no thermal protector has tripped
out) following installation instructions below.
Switch the machine/unit off as first
Today’s motor start-up switch
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3
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Take the clip-on
control unit out
Take the clip-on
automation control
module out
Fit the clip-on
auxiliary contacts
unit in
CLIC
CLIC
Refit the clip-on
control unit in
Disconnect wire
from power base
terminals 95 and
96 and cut the
plastic clamp
Pull wires and
connect them to
the auxiliary
contact terminals
95 and 96
Fasten wires with
a clamp and
rearrange them
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5
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6
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Electrolux 726687 (RS06FX1F6) Datasheet
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