Faults; Faults And Troubleshooting - SystemAir PRF 125D2 Betriebsanleitung

12.4

Faults

12.4.1 Preconditions
•
The area has been marked by a number of visible signs „Repairs".
•
You use a portable working lamp with a protected bulb so that you can see the interior parts of the housing better.
• You follow the instructions in these operating instructions.
12.4.2 Coding of the personnel preconditions for faults
Code Description
1 Only authorised personnel of the manufacturer
2 Customer's personnel with technical training
3 Customer's personnel with technical training coached for the specifi c maintenance work

12.4.3 Faults and troubleshooting

The following table shows:
•
Fault: a description of the problem - the most frequent fault symptoms;
• Causes: possible causes of damage;
• Remedy: suggestions for solving the problem;
•
PRF code: who may work on the type PRF fan;
•
PRF-EX code: who may work on the type PRF-EX fan.
Fault
Fan does not run
smoothly
Output of fan too low
Grinding sounds in
operation or start of
the Ex fan
Fan types PRF and PRF EX - 10.2013
Causes
Adhesions to the rotor
Material decomposition on
the rotor due to aggressive
material conveyed
Deformation of rotor due to
excessive temperature
Wrong direction of rotation
of rotor
Loss of pressure in lines too
high
Throttle organs not or only
partly open
Intake or pressure paths
blocked
Intake line installed twisted.
Remedy
Clean carefully, rebalance if nec-
essary
Contact the manufacturer
Contact manufacturer, install
new rotor, check bearings
Change direction of rotation
Different line guidance
Check opening position on site
Remove obstacles
Loosen intake line and realign.
PRF PRF-EX
code code
3 3, 1
2 2
3 3, 1
2 2
2 2
2 2
2 2
2 2
55