8
stationary radial fan
WPA
-
14
-
S
-
N
04.06.2019
8.
Troubleshooting Guide
Table No.4
Problem
Possible reason
Corrective action
1
.
Sudden and significant
Pollutants, foreign objects (being Remove the pollutants;
drop in intake volume flow.
obstacle / barrier do the air flow) clean the inlet grill.
have deposited at the inlet grill.
2
.
Sudden vibrations of the fan Obstacle objects reducing
Disconnect the fan from the po-
are occurring.
the air flow got stack at the
wer supply system and remove
impeller.
the obstacle.
The impeller is defective.
Replace the impeller with motor
for a new one.
3
.
Noisy work of the fan
Incorrect impeller rotation sense. Change the impeller rotation
along with small volume flow.
sense by changing the phase
connection sequence
9.
Maintenance and Control
In the aspect of operational use, the fan construction guarantees
its efficient function without
continuous routine technical supervision
.
Nevertheless,
to obtain
proper function of the device
and to follow the safety rules,
manufacturer suggests executing technical revisions on re-
gular basis
. During the inspection check the function of the fan and the technical state of its
elements.
Any maintenance activities should be executed exclusively by an autho-
rized person
with electrical qualifications
and
after disconnection from
the power supply system
.
(
The exemption
from this are activities carried out on the run-
ning fan, under strict observing the
Occupational and Health Safety
rules
–
e.g.
vibration
measurement
).
Before the maintenance, necessarily
disconnect
the
fan from
the
power supply system
and
wait
until the impeller stops rotating.
Within the scope of inspection execute following activities
:
●
check and tighten up the mechanical and electrical connections,
●
examine the mountings of the motor and the fan,
whereby
important is the
clearance
between
the inlet and the impeller within the whole circumference.
●
remove the impurities accumulated inside the fan, eventually clean it from pollutants origi-
nating from the conveyed medium.
During the
maintenance
activities
follow
strictly the rules of Occupational Health and Safety, in
order not to cause hazard to workers/personnel.
10.
Occupational Health and Safety
Start up and the
operational
use are
only
admissible exclusively
after
getting acquainted
with the contents of the present Use and Maintenance Manual
.
Connect the fan to the electrical power system,
strictly according
to the enclosed Connection
Diagram and the guidelines
shown in
Section
6
of the present Use and Maintenance Manual.
This ought to be carried out exclusively by a qualified person,
and in accordance with
the valid regulations
.
During the operational use,
examine
the
connection
between the fan
and the PE
protective
cable
.
Any activities
connected
with
technical revisions and repair have to be
executed necessarily after the device
is disconnected
from the power supply system
.
Approaching with loose clothes or putting the hand towards the open inlet
of the run-
ning fan,
can cause hazard of accident and disability. Absolutely, do not look into the
opening of the working fan as this could cause face injury of the operator
.