4
Maintenance
FläktGroup
DC_9202GB 20180403_R0
Specifications are subject to alteration without notice
MOVING THE MOTOR TO ADJUST THE BELT TENSION
The belt tension can be adjusted by moving the motor.
1. Remove the belt guard, if fitted.
2. Slightly back off the 4 mounting screws.
3. Use the tensioning screws to adjust the belt tension.
4. Check the alignment of the drive. Align by means of the adjustment
screw.
5. Retighten the mounting bolts.
6. Refit the belt guard if one was fitted.
LQLR-60 THROUGH -84
Fig. 6
Mounting
bolt
Slid rail
Tensioning screw
Tensioning pad
Mounting
screw
Adjustment
screw
Adjustment
screw
BELT PULLEYS
TO REMOVE AND REFIT THE BELT PULLEY.
Never hammer the belt pulley onto or off a shaft, since even light blows
and shocks may damage the bearing, which will give rise to noise and an
abnormally high rate of wear.
TO REMOVE
1. Remove the screws, oil them sparingly and screw one of them into
the extractor hole, i.e. the tapped hole in the bush, see Fig. 7.
2 Tighten the screw until the bush is free of the hub and the unit is
free of the shaft.
3. Remove the pulley and the bush from the shaft as one unit.
TO FIT
1. Clean the bore of the pulley and the inside and outside of the
bush to remove any anti-corrosion agent, and make certain that
the surfaces are completely free from oil and dirt. Fit the bush into
the pulley.
2. Oil the screws sparingly and loosely screw them into the tapped
holes in the pulley, see Fig. 7.
3. Clean the shaft and fit the pulley and bush onto the shaft as
one unit.
4. Tighten the screws alternately until they are all securely tightened.
EUL(B,F) 15
EUL(B,F) 12
Extractor hole
Screw
Screw
Fig. 8
Fig.7
SELF-ALIGNING ROLLER BEARINGS (THE BEARING
BLOCKS HAVE GREASE NIPPLES, SEE FIG. 9
LUBRICATION
The SKF type 222(00) CCK bearings are mounted on H3(00) taper
sleeves in the SKF type SNA 5(00) TAV bearing block. See Fig. 9. These
self-aligning roller bearings are equipped with grease nipples and should
be lubricated once a year if they are run 8 hours a day and twice a year
if they are run around the clock. Lubricate with about 100 grammes of
grease per bearing. Use SKF ALFA LUBE LG MT2 or equivalent grease.
TO DISMANTLE
1. Remove the top half of the bearing block.
2. Fold back the tabs of the tab washer and back off the nut a few turns.
3. Mark the position of the bearing block and then release its bottom
half from the support arm.
4. Raise the shaft with the bearing block about one millimetre. Use a
drift or a piece of pipe to the nut to tap the taper sleeve out of the
bearing. Remove the bearing together with the bottom half of the
bearing block from the shaft.
Fig. 9
