Hoover HF7150MUK, Руководство по обслуживанию

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2003 Range Washing Machines
©
2003 GIAS U.K. / Hoover Ltd.
PAGE 4
DRUM AND TUB REMOVAL CON’TD
• To remove the drum :Remove the drum pulley and the drum can be withdrawn from the
front of the tub,
• The drum may be very tight and require knocking out of the tub.
•
Care must be taken to protect the drum shaft threads with a packing bolt.
TUBS MUST BE CHANGED COMPLETE
•
The drum bearings are not serviceable,
•
Make sure when fitting the suspension dampers that they are fitted with the plastic rod
end on to the base of the cabinet, positioned so that the smooth face of the alloy
housing faces inward towards the tub.
PRESSURE RESERVOIR
•
The pressure reservoir is of a new design and is secured via three screws and ‘o’ ring to
the rear of tub assy.
NOTE ON OUT OF BALANCE DETECTION .
•
The timers used on these machines have O ut O f B alance detection on the module and
operate in the following way.
•
At the start of the spin sequence as the machine ramps to 95rpm , the load on the motor
is monitored as follows.
1 . If the machine is heavily unbalanced the spin sequence restarts and the process can
continue for up to
12 attempts if still very unbalanced then the cam position will
cause the drum to remain stationary for the remainder of spin time.
2. The machine also monitors the load at 650 rpm if still slightly unbalanced at this
point it will try three times to even the load; if it fails, the machine will carry on
spinning at
650 rpm until the end of the program.
3 If the drum is not out of balance the module allows the machine to spin as shown in
the graph below.
Ideal Spin Sequence
ELECTRICAL TESTING
•
Earth Continuity Earth pin on plug top to 1. Door Hinge Max 1
Ω
2. Drum Inner Max 1
Ω
Insulation CCP Bonded to Earth spin selected, door shut, Switched On Minimum 1M
Ω