MU 15539 0417
1
919043-0
GB
Centrifugal fans type CAL
Installation and maintenance
1. Handling
1.1
Vertical transport
2. Storage
3. Installation
3.1
Installation
3.2
Duct connections
3.3
Security
3.4
Electric connection
4. Start-up
4.1
Before start-up
4.2
Fans with inlet guide vane
4.3
Motors with Y/
Δ
start
4.4
Frequency-controlled
motors
4.5
Start-up procedure
4.6
Repeat inspection
4.7
Calculation of air volumes
5. Maintenance
5.1
Cleaning and inspection
5.2
Dismounting of impeller
from the inlet side
5.3
Mounting of impeller from
the inlet side
5.4
Dismounting of motor
with impeller from the
motor side
5.5
Mounting of motor with
impeller from the motor
side
5.6
Shaft seal
6. Sound
7. Inspection and test
8. Safety
9. Spare parts
10.Patents, trademarks and
copyright
11.Quality and
environment
12.Warranty
13.Declaration of
conformity
1. Handling
1.1 Vertical transport
Four-point suspension is recom-
mended for hoisting.
Fans are lifted in the supports locat-
ed in the inlet side of the fan housing
and in the motor bracket on the op-
posite side.
2. Storage
Fans are supplied on pallets or skids
which allow fork-lift transport. Fans
can withstand outdoor storage for
up to one month provided the pack-
aging is intact.
If the fans are stored indoors under
well-ventilated conditions with no
risk of condensation, the storage pe-
riod may be extended to six months.
The storage place must not be ex-
posed to vibrations, which may
damage the bearings.
If the storage period exceeds three
months, it is recommended to turn
the impeller regularly by hand.
3. Installation
3.1 Installation
Fans must be installed on a horizon-
tal, firm and level surface with an os-
cillation frequency that is at least
20% higher than the highest fan ro-
tational frequency.
Fans are normally mounted on vi-
bration dampers screwed onto the
surface. Vibration dampers are nor-
mally not supplied with the unit.
Avoid subjecting the fan to mechan-
ical stress during installation – espe-
cially when installing the fan with-
out vibration dampers and with
fixed connections.
3.2 Duct connections
Ducts are normally connected by
means of flexible connections.
Prior to connecting the ducts, check
that:
-
all movable parts can move free-
ly.
-
the distance between impeller
and inlet cone is equally large
everywhere.
-
fan and duct connections are
clean and free of foreign objects.
Flexible connections must be loosely
stretched, and duct connections
must be centred in the fan inlet and
outlet openings and supported to
prevent them from 'hanging' in the
flexible connections.
3.3 Security
Electrical connections must be made
by an authorised electrician. The fan
Fig. 1
Fig. 2
Fig. 3
