Nordson HORIZON 200, Руководство по эксплуатации продукта

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Repair
7-26
Part 106913 − 04
E 2018 Nordson Corporation
New-Style Bearing and Fan Shaft Adjustment
Part 177622 Rev B or higher
1. Place a square across the motor and fan sheaves. Adjust the fan shaft
forward or back until the sheaves are parallel. This is a rough
adjustment and will have to be repeated later.
2. See Figure 7-11. Install the fan and key on the shaft. Tighten the key
set screw in the fan hub to hold the fan in place. Install the retainer
washer and screw on the end of the shaft.
3. Apply a coating of light oil or rust preventative to the adapter area of the
shaft and bearing bore.
4. Remove all weight from the bearings by blocking up the fan wheel to the
proper overlap. Secure the fan shaft to prevent rotation during bearing
adjustment.
5. Adjust the non-expansion bearing (9):
a. Turn the lock nut by hand as tightly as possible. Wear gloves while
tightening the lock nut.
b. Scribe a line on the lock nut at the adapter slot. The line and
adapter slot will serve as reference points as you tighten the lock
nut.
c. Using a spanner wrench, tighten the lock nut
2
/
3
− 1 turn.
d. Tighten the lock nut set screw to 2.8 N • m (25 in.-lb).
e. Tighten the bearing mounting bolts to 67.8 N • m (600 in.-lb).
6. Adjust the expansion bearing (2):
a. With the
1
/
16
-in. shims in place, turn the lock nut by hand as tightly
as possible. Wear gloves while tightening the lock nut.
b. Scribe a line on the lock nut at the adapter slot. The line and
adapter slot will serve as references point as you tighten the lock
nut.
c. Using a spanner wrench, tighten the lock nut
1
/
8
turn.
d. Remove the
1
/
16
-in. shims and, using an alternating pattern, tighten
the bearing mounting bolts to 67.8 N
•
m (600 in.-lb).
e. Lock the bearing onto the shaft by turning the lock nut a total of
2
/
3
− 1
turn.
f. Tighten the lock nut set screw to 2.8 N
•
m (25 in.-lb).
7. Rotate the shaft by hand. You should not feel any binding or excessive
drag.
8. Install the inlet cone and adjust the fan overlap as described in the Fan
Replacement procedures.