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DISASSEMBLY- AND RE-ASSEMBLY ADVISE
- To open the appliance, first remove the filter cover
(item 17).
- Remove the dust bucket including filter.
- Remove the turn plate cover (item 6) after removing the
2 screws (A).
- Remove the 6 screws (B) at the bottom of the appliance.
For 2 screws a screwdriver with a 14.5 cm long shrank is
required. Screwdriver 4322 009 08490 for T15 is suitable
for this.
- Lift the upper housing by pulling only the middle of the
backside up (use a screwdriver if necessary).
- Remove the potmeter connector from the printed circuit
board.
- Do not forget to reconnect the potmeter when re-assem-
bling the upper housing (connector fits in one way only).
- When the repair is finished, check whether all functions of
the appliance work properly.
ELECTRICAL DIAGRAM
Potmeter
Red
Blue
Blue
White
Motor Power Module
= changed
Cordwinder
White
M
Switch
Further disassembly advise for the potmeter:
- Remove the turn knob by just pulling it (use a screwdriver
if necessary).
- Remove the 2 screws (C) inside the upper housing, use
TORX screwdriver no. T10, which is one of a set consisting
of T20; T15; T10; T9; T8; T7 and T6 (code number
4822 395 505145).
REPAIR INSTRUCTION
- The cord winder spring must be tensioned to the maximum
level and then be rewound approx 1.5 turns.
- Item 22, air valve, opens to cool the motor if the air
displacement is too low or if the airflow is blocked.
- Both item 22, air valve, and item 23, inlet tube B, must be
replaced in appliances produced before WK626. This to
prevent/solve premature and noisy opening of the valve.
- If the function of the electronic control unit is not required,
the Triac must be short-circuited in the manner shown in
the circuit diagram.
- Filter performance can be improved (less reduction of
suction power in time) replacing both Filter assy (pos. 25)
and Bucket cover assy (pos. 26) by using "improved filter
service kit" 4322 009 09790 (pos. 58).
- Separate "long Filters" are available under code
4322 004 93320 (pos. 57)
Short-
circuit
FC8722
Triac
2-7
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