Electrolux RH06DD2F User Manual

Identification:

Technical
Bulletin no:

Date:
Issuer:
Factory:

Subject

Model

D06

CGX2006-21 (page 1 of 6), 2nd ed.

27 April 2007
R. Sartor (DWS Customer Support)
DW Vallenoncello - Italy

Alarms 23, 24, 37, 38, 57 and 75 in WTM & RTC / WTC

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

0L1036

0L1016 8A÷32A X X
0L1017 3A÷12A X X

0L1222

0L1029 4,5A÷18A X X

0L1297

3A÷12A X X

1,25A÷5A X X

0,35A÷1,4A X X

LUA1C11 /

LUFC00

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.

ELECTROLUX PROFESSIONAL SPA
MAILING ADDRESS TELEPHONE WEBSITE VAT NO.

VIA SEGALUZZA, 30
33170 PORDENONE - ITALY

OFFICE ADDRESS TELEFAX E-MAIL ADDRESS

VIA SEGALUZZA, 30
33170 PORDENONE - ITALY

++39 0434 380650 www.electrolux.com 00072220932

++39 0434 380643
++39 0434 385646

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3rd and 4th digit = 05

It may have problems of false contact

3rd and 4th digit = year of production, 5th and 6th digit = week of production, 7th digit = day of production

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.

2T05335 = made on Friday of week 33 in year 2005

2C06113 = made on Wednesday of week 11 in year 2006

OK. It has NOT problems of false contact

Gold-plate auxiliary

3rd and 4th digit = 06

contacts 0L1441

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