Goulds Pumps 3700 Installation, Operation And Maintenance Manual page 82

Maintenance
125
184
230
Figure 56: Seal chamber cover wear ring
When to replace wear rings
Replace wear rings when the diametrical clearance exceeds two times the minimum clearance
as shown in this table or when the hydraulic performance has decreased to unacceptable
levels.
Table 7: Minimum running clearances
Diameter of impeller wear ring
in.
<2.000
2.000 to 2.4999
2.500 to 2.999
3.000 to 3.499
3.500 to 3.999
4.000 to 4.499
4.500 to 4.999
5.000 to 5.999
6.000 to 6.999
7.000 to 7.999
8.000 to 8.999
9.000 to 9.999
10.000 to 10.999
10.000 to 11.999
12.000 to 12.999
Replace the wear rings
WARNING:
Dry ice and other chilling substances can cause physical injury. Contact the supplier for
information and advice for proper handling precautions and procedures.
(Not applicable for 3700LF)
80 Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Seal-chamber throat bushing
Seal-chamber cover
Seal-chamber cover wear ring
mm
<50
To to 64.99
65 to 79.99
80 to 89.99
90 to 99.99
100 to 114.99
115 to 124.99
125 to 149.99
150 to 174.99
175 to 199.99
200 to 224.99
225 to 249.99
250 to 274.99
275 to 299.99
300 to 324.99
Minimum diametrical clearance
in. mm
0.010 0.25
0.011 0.28
0.012 0.30
0.013 0.33
0.014 0.35
0.015 0.38
0.016 0.40
0.017 0.43
0.018 0.45
0.019 0.48
0.020 0.50
0.021 0.53
0.022 0.55
0.023 0.58
0.024 0.60
Manual