f. Coupler half
g. Coupler half
Figure 12: Coupler
8. Insert the coupler cap screws and place a lock washer and nut on each screw. The bolt
heads at each level on opposite sides of the coupling should face in different directions
for balance.
9. Tighten all of the bolts evenly to avoid mis-alignment. The shaft and impeller are pulled
up in to position as the bolts are tightened. Then rotate the shaft by hand and make sure
the gap on both sides of the coupler is approximately equal. Make sure the gap from the
top to the bottom of the coupler is even. If the gap is not equal, loosen the bolts and
repeat the tightening step.
10.Slowly rotate the shaft by hand and check to see if any rubs occur.
a. If no rubs occur, prime and start the pump run for two minutes and determine if the
pump run smooth and vibration free.
b. If problems occur, check the installation and repeat as necessary.
Gap
Figure 13: Top view
6.3.4 Screw torque values
Capscrew torque in ft-lb (Nm)
Capscrew
type
Head
marking
Capscrew diameter (in inches)
1/4
5/16
3/8
7/16
1/2
5/8
3/4
7/8
1
SAE
grade 2
6 (8)
13 (18)
25 (34)
38 (52)
60 (81)
120 (163) 190 (258) 210 (285) 300 (407)
Brass and
stainless
steel
or
4 (5)
10 (14)
17 (23)
27 (37)
42 (57)
83 (113)
130 (176) 200 (271) 300 (407)
SAE
grade 5
10 (14)
20 (27)
35 (47)
60 (81)
90 (122)
180 (244) 325 (440) 525 (712) 800
(1085)
6 Maintenance
26
Series e-80SCXL INSTRUCTION MANUAL
Summary of Contents for Bell & Gossett e-80SCXL Series
Page 1: ...INSTRUCTION MANUAL P2005589 A Series e 80SCXL...
Page 2: ......
