
Maintenance | 11
Operating instructions CMVpro 125-400 ATEX | Version 1-en
63 / 88
• Cracking: Fan housing, vibration absorber
• Noise: Motor bearings
• Proper mounting and damage of: safeguards (splinter protection, pro-
tective grid, optional motor cover), and support
• Blockages in condensate drain (option) and missing water in siphon.
• Damaged parts. Replace these parts immediately.
2.
Test run
• Vibration measurement and condition check of the motor bearings.
Compare measured values with
- limit value according to table
_
57],
- information in the test report from initial commissioning.
• Replace motor bearings at the end of their service life or if they exhibit
significant noise development due to bearing wear. To do this, remove
the electric motor
_
73].
The motor bearings are lifetime lubricated
_
on the bearing service life, see the operating instructions of the electric motor.
• Check hub seal (option,
_
• Measure the current draw of the electric motor. The measured value
may not exceed the rated current on the nameplate.
• Measure temperature of the electric motor and compare with informa-
tion in the technical data sheet.
CAUTION
Risk of burn
3.
Inside inspection and cleaning
• Check the impeller for deformation and for damage such as cracking
and corrosion.
• If necessary, conduct outside and inside cleaning.
• Check impeller position
_
74].
4.
Assembly and final inspection
• Proper mounting of the splinter protection
_
• Fixed position of all screw connections.
• Fixed position of all fastening elements (anchors) in the foundation
(baseplate).
• Short test run, checking for vibration and noise.