2202G1JE-DA-M-N_2010.01.
3 Installation
Reciprocating Compressor M Series
3.2 Installation Works
3-8
For centering by driving the belt, strain a string on the side of flywheel and motor pulley.
Centering standard: L=1 mm or less
Fig. 3-3 Centering standard
2.
Loosen the slide base of motor, move the refrigerating machine and the pulley closer to each other, and
attach the V-belt to groove V while slacking the V-belt.
Check that the V-belt fits groove V, and pull the motor with the bolt so that the belt becomes tensioned.
Deflection = 0.008 × span length (mm) (Span length
≒
Center distance)
Fig. 3-4 Deflection
No.
Description
No.
Description
1 Tension
meter
3
Deflection
2 Center
distance
4
Span
length
Table 3-2 Amount of deflection (mm)
Table 3-3 Amount of tension load (N/belt)
Note 1:
Re-tighten the belt for the first time after 2—3 hours from the starting the operation.
Note 2:
Rotate the flywheel (pulley) to check the tension load of V-belt.
Note 3:
When the belt is under the minimum tension load, make sure that the belt does not move excessively by operation, because the
load fluctuates due to the load conditions.
Center distance (mm)
1000
1100
1200
1300
1400
1500
1600
1700
Deflection (mm)
8.6
9.5
10.4
11.3
12.2
13.0
13.9
14.9
Rotation speed of
the compressor
(rpm)
Tension load of
new belt
Tension load at
re-straining for the first
time
Tension load at
re-straining for the
second time and after
1500
95
～
105 85
～
95 60
～
70
1400
90
～
100 80
～
90 60
～
70
1300
90
～
95 75
～
85 55
～
65
1200
80
～
90 70
～
80 50
～
60
1100
75
～
85 65
～
75 50
～
60
1000
75
～
85 65
～
75 50
～
60
900
65
～
75 55
～
65 40
～
50
