Cleaning, Maintenance; Cleaning & Maintenance; Fault Rectification - Maico EZD 30/ B Série Instructions De Montage Et Mode D'emploi

UK │ 10. Electrical connection
5. Run function test. Check that the impeller
runs quietly and ensure if necessary. It is
also important that the air can flow
unhindered.
6. Switch off unit.

11. Cleaning, Maintenance

Cleaning and maintenance only permissible
when carried out by trained specialists.
DANGER
Danger to life from electric shock.
Before cleaning or maintenance work,
switch the fan off with the service switch
(position "off") and secure it against being
accidentally switched back on.
CAUTION
Regularly clean the fan. The operator
should determine the cleaning intervals –
the frequency depends on ambient
conditions and anticipated impairments.
11.1 Cleaning
1. Move service switch to the "Off" position
and protect against switching back on
again.
2. If required, clean the fan with a dry cloth.
11.2 Maintenance
1. EZD-/DZD units require no maintenance.
Despite this, check the unit from time to
time for bearing noise, damage and
disproportionate vibration.
DANGER
Danger of injury from rotating impeller
after switching off. Switch service switch
to "Off" position before removing the roof
cowl. Wait until the impeller is stationary.
2. If necessary, clean the unit of dirt/foreign
particles as described above. Never use
water or a high-pressure cleaner on the
interior.
20

12. Fault rectification

Check whether the thermal motor protection
(PTC thermistor triggering device) has
tripped. Once the motor protection has
cooled down, switch the unit on and check
for unusual noise.
Fault finding and repairs only permissible
when carried out by trained specialists.
Fault Cause, measure
Fan does not No mains voltage.
switch on.
Check whether the mains
fuse has failed. Switch on
if necessary.
If necessary, also check
the service switch.
Motor's Motor too hot.
thermal
Leave the unit switched off
overload
until the motor and the
protection
temperature limiter cool
switches the down. It may take up to
30 minutes to cool down.
fan off.
Only then, switch the unit
back on.
Impeller is blocked.
Fan does not
Check impeller and clean if
switch on.
necessary.
Deposits on the Install an air filter in the duct
system. Under no circum-
impeller and in
the housing stances should the inside
caused by dust of the unit be cleaned with
in the air. water or a high-pressure
cleaner.
Impeller not Switch off unit. Ensure that
turning. the impeller is not blocked
by foreign bodies.
If the fault still continues or occurs
again, disconnect the fan from the
power supply at all poles.
Let a certified electrician determine
the cause of the fault and eliminate it.