ITT Goulds Pumps 3700, Инструкция по установке, эксплуатации и обслуживанию

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NOTICE:
• All replacement impeller wear rings, except those that are hard-faced, are supplied
0.51 mm to 0.75 mm | 0.020 in. to 0.030 in. oversize.
• Do not machine all wear rings. Spare hard-faced impeller wear rings are supplied to
pre-established clearances when both impeller and casing wear rings are renewed.
Figure 60: Impeller
10. Install the impeller:
a) Install the impeller key on the shaft of the assembled bearing frame from which the seal-cham-
ber cover has been removed, and on which the runouts are within the established specifica-
tions. The key should be at the top (12 o’clock) position for the impeller installation.
b) Install the impeller on the shaft.
c) Install the impeller washer.
d) Secure the impeller firmly with an impeller screw or impeller nut.
The impeller screw has left-hand threads.
11. Check the impeller wear-ring runout:
a) Mount the dial indicator.
b) Rotate the shaft so that the indicator rides along the casing-side impeller wear-ring surface for
360°.
c) Repeat steps a and b for the wear ring on the seal-chamber cover side.
6.5 Preassembly inspections
Model 3700, 3703, 3710, 3700LF, 3700LFI API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Instal-
lation, Operation, and Maintenance Manual 87