9
04.06.2019
explosion-proof duct fan
WP-11/Ex
In case of every repair or spare part replacement (according to 2014/34/EC
ATEX Directive) it is important to apply an adequate information on an addi-
tional plate or in the enclosed documentation (a register log of repair activi-
ties, etc.). This is the duty of User!
Typical disturbances and their reasons are exposed below.
8.
Troubleshooting Guide
Table No.2
Problem
Possible reason
Corrective action
1
. sudden vibrations of the
hindrance objects, pollutants
spot the barrier object /
fan are occurring
reducing the air flow got stack pollutant and remove it
in the duct or in the inlet
the impeller is damaged
replace the impeller with
motor for new
2
. the fan does not start
fade of one of the phases or
adjust the correct voltage
the supply voltage is too low
the block of protection activa- make correct settings of the
ted
protections
9.
Maintenance
Construction of the fan guarantees its longevity and reliable function without the constant
routine technical supervision.
To obtain correct functional performances and to meet the safety rules,
it is
recommended
submit the fan to technical revision in regular periods of time
.
Technical revisions on the fan must be executed by a qualified person with
adequate authorization. Additionally, the fan necessarily should by discon-
nected from the power supply system.
During the technical revisions, follow the recommendations and instructions included
in the User’s Manual of the motor, that constitute integral part of the main User’s Ma-
nual of the fan.
Before any revision activities on the fan, follow subsequent steps
:
–
disconnect the fan from the power supply system. Exclusion from it
are activities that must be carried out on the running fan, i.e. vibration
measurements. Whereby, observe strictly the Occupational and Health
Safety regulations
–
wait until the impeller stops its rotations
Within the scope of technical revision carry out following steps
:
–
examine and tighten up the mechanical- and electrical connections; moreover check if any
malfunctions are by noise or visually perceptible
– if this is the case, undertake its control.
–
undertake the inspection of the fan (radial impeller of the fan motor
– according to the in-
structions of the manufacturer). During the technical inspection, clean the fan from deposi-
ted impurities.
Restart of the fan is possible, after the control steps as described in
Section 6 “Assembly and
Start-
up”.
