5.6.2 Checking the belt drive
Safety no t e s
DANGER
Electrostatic charging
Explosion hazard!
Damage to the pump set!
▷ Connect PE conductor to the earthing terminal provided.
▷ On belt-driven pump sets use belts made of conductive material.
CAUTION
Poorly checked and aligned motor connection
Increased wear, insufficient power transmission, loud running noises!
▷ Always use clean pulleys without any signs of wear.
▷ Align the shaft end of pump/motor flush with the pulleys.
▷ For multiple V-belt drives: use V-belts of the same length.
▷ Tension the V-belts properly.
5.6.2.1 Checking the pulleys and V-belts
✓ Comply with the instructions set forth in section (⇨ Section 5.6.2 Page 31).
1.
Remove the belt guard.
2. Check that pulleys and V-belts fulfil the following conditions:
- Pulleys are free from burs, rust and dirt.
- V-belts are not worn.
- For multiple V-belt drives: All V-belts have the same length.
3. Replace any pulleys effected by burrs or rust.
4. Clean any dirty pulleys.
5. If replacing V-belts always replace the entire set of V-belts.
5.6.2.2 Checking the alignment of pump and motor shaft
✓ The notes and steps stated in (⇨ Section 5.6.2 Page 31) to (⇨ Section 5.6.2.1 Page
31) have been observed/carried out.
1. Measure the distance between the shaft stubs in two points with a straight-edge.
The shafts are correctly aligned, if the distances in both measurement points are
equal (the axes are parallel).
2. If the distances differ, align the motor bracket by turning threaded rods
904.23/904.24 until the distance in both measurement points is identical.
5.6.2.3 Checking the alignment of the pulleys
✓ The notes and steps stated in (⇨ Section 5.6.2.2 Page 31) to (⇨ Section 5.6.2.2
Page 31) have been observed/carried out.
✓ Required tools: wedge gauge, straight-edge
1. Place the straight-edge (1) vertically on both pulleys.
2. Leave the straight-edge (1) in this position and turn the measurement point
further by hand.
3. Adjust the alignment, if required. (⇨ Section 7.5.9 Page 63)
4. Re-install the belt guard.
Fig. 14: Checking the
pulleys
5 Installation at Site
KWP
31 of 78
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