Commissioning; Maintenance; Fault Rectification - Maico EZQ .. B series Montage- Und Betriebsanleitung

EN │ 7. Installation – Electrical connection

7.5 Commissioning

1. Check that all screw connections are tight.
2. Check air channel for dirt and clean if
necessary.
3. Check that connection data matches tech-
nical data on the unit (rating plate  unit
 instructions envelope).
4. Remove protection against switching back
on and switch on mains fuse.
5. Run function test. Check direction of rota-
tion and air flow and if necessary swap the
cable connections over. Check and ensure
that the impeller runs quietly. It is also
important that the air can flow unhindered.
6. Switch off unit.

8. Maintenance

The unit is maintenance-free.

9. Fault rectification

● Call on the services of a trained electrician
any time there is a fault.
● Repairs should only be carried out by a
trained electrician.
Danger to life from electric
shock.
Prior to accessing the
DANGER
connection terminals, switch off
all supply circuits. Switch off the
mains fuse, secure against
being accidentally switched
back on and position a visible
warning sign.
Danger of burning through an
overheated motor, in the case
of a fault.
CAUTION
Let the device cool down
sufficiently before working in the
area of the motor. Only then
remove the protective grille [1].
18
Fault Cause, measure
Fan does not No mains voltage.
switch on.
Check whether the mains
fuse has failed. Switch on if
necessary.
Motor's thermal EZQ.. and EZS.. units:
overload If the fan motor overheats,
protection the thermal overload
switches the protection reacts. In the
fan off.
case of thermal overload, it
switches the motor off and
automatically turns it on
again after the motor has
cooled down.
DZQ.. and DZS.. units:
Motor too hot. Leave the unit
switched off until the motor
and the temperature limiter
cool down. Cool-down time
can be up to 30 minutes.
Only then, switch the unit
back on.
Impeller is blocked.
Fan does not
switch on. Repairs may only be
carried out by a trained
specialist.
Check impeller and clean if
necessary.
Impeller not Switch off unit. Ensure that
turning. the impeller is not blocked
by foreign bodies.
Capacitor [3] not installed or
EZQ.. B and
installed incorrectly.
EZS.. B units:
Fan doesn't
Connect capacitor [3]
start up Motor
correctly ( chapter 7.2).
overheats.
Capacitor [3] not installed or
EZQ.. B and
installed incorrectly.
EZS.. B units:
Even slight Connect capacitor [3]
contact with the
correctly ( chapter 7.2).
stationary
impeller may
cause the fan to
start.