Colasit CMV 1250, Operation Manual

Page: 14 / 24

COLASIT AG
Plastics construction
CH-3700 Spiez
Phone +41 (0)33 655 61 61 Fax +41 (0)33 654 81 61
TD-000 800-E
Edition 10/2019, Subject to alteration
Copyright by COLASIT AG Spiez
Page 14
Fault Possible causes Remedy
V-belts slip due to
Incorrect pretension
Check belt tension and retighten
if necessary
Foreign bodies or soiling in
grooves or pulleys Clean pulleys and check belt
profile
Leak at shaft bushing Seal not suitable for application Consult the manufacturer
Leak on sleeves
Sleeves defective Replace sleeves
Tensioning straps not tight
enough
Retighten tensioning straps
Fan output too low
Incorrect rotation direction of
impeller
Change rotation direction
Pressure losses in ducts too
high
Change duct arrangement
Restrictors not or only partly
open
Check opening on site
Intake or pressure duct blocked Remove blockage
Fan fails to reach its rated
speed
Electrical switching mechanisms
incorrectly adjusted Check motor protection setting
and reset if necessary
Motor winding defective Please consult the manufacturer
Drive motor drive not correctly
designed Please consult manufacturer to
verify starting torque
Grinding noises when fan is
running or starting
Intake duct fitted under tension Remove intake duct an realign
Rise in temperature of roller
bearings
Bearing was not greased
Change bearing and grease at
regular intervals as stipulated in
the maintenance instructions
Bearing was excessively
greased Change bearing, otherwise as
above.
Dust in bearing Renew seal
12 Retrofittable original accessories
If not already a part of our scope of supply, these original parts are available ex stock when ordered.
- Sleeve round with fixing bands, stainless
- Sleeve round with flange on one side with fixing bands
- Sleeve rectangular with flanges on both sides
- Condensate drains
- Vibration dampers
- Splinter protection
- Lip seal
- Weather-proof motor cover for outside installation
- Inspection hole
- Frequency converters
13 Fan identification
The following rating plate is affixed to each COLASIT fan:
1 Manufacturer
2 Field for CE marking and applicable standards
3 Fan specifications: fan type, casing design, material of casing and impeller, order number and date of
manufacture.
4 Technical specifications