ITT GOULDS PUMPS 3935, Инструкции по установке, эксплуатации и обслуживанию

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Table 4: BP20 impeller stack clearance
BP20 Impeller Stack Required Front Clearance
1st stack
14 stages or less
+ 1.016mm ± 0.127mm | + 0.040" ± 0.005"
2nd stack
15th to 28th stages
+ 0.635mm ± 0.127mm | + 0.025" ± 0.005"
3rd stack
29th to 42nd stages
+ 0.889mm ± 0.127mm | 0.030" ± 0.005"
4th stack
43rd to 56th stages
+0.889mm ± 0.127mm | +.035" ±.005"
5th stack
57th to 70th stages
+ 1.016mm ± 0.127mm | + 0.040" ± 0.005"
6th stack
71st to 85th stages
+1.143mm ± 0.127mm | + 0.045" ± 0.005"
7th stack
85th stage
+1.143mm ± 0.127mm | + 0.045" ± 0.005"
NOTICE:
1. Steady bearings are located between each stack - every 14 stages.
2. At completion of stacking remove 0.508mm | .020" from front of impellers 21, 29, 35, 43, 49,
57, 63, 71, and 77
Table 5: BP40 impeller stack clearance
BP40 Impeller Stack Required Front Clearance
1st stack
12 stages or less
+ 1.016mm ± 0.127mm | + 0.040" ± 0.005"
2nd stack
13th to 24th stages
+ 0.635mm ± 0.127mm | + 0.025" ± 0.005"
3rd stack
25th to 36th stages
+ 0.635mm ± 0.127mm | + 0.025" ± 0.005"
4th stack
37th to 39th stages
+ 0.889mm ± 0.127mm | 0.030" ± 0.005"
NOTICE:
1. Steady bearings are located between each stack - every 12 stages.
2. Use only 0.254mm | 0.010" shims for setting front clearance of impellers 25 and 31.
3. At completion of stacking remove one 0.254mm | 0.010" shim from front of (suction side) im-
pellers 25 and 31.
7.7 Bearing and seal replacement
24 Model 3935 Installation, Operation and Maintenance Instructions