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Model 3935 Installation, Operation and Maintenance Instructions
NOTICE:
1. Steady bearings are located between each stack - every 10 stages.
2. Use only 0.254mm | 0.010" shims for setting front clearance of impellers 25, 31 and 35.
3. At completing of stacking remove one 0.254mm | 0.010" shim from front of (suction side)
impellers 25, 31 and 35.
Table 5: BP100 impeller stack clearance
BP 100 Impeller Stack
1st stack
8 stages or less
2nd stack
9th to 16th stages
3rd stack
17th to 24th stages
4th stack
25th to 32nd stages
5th stack
33rd to 40th stages
6th stack 41st stage
NOTICE:
1. Steady bearings located between each stack - every 8 stages.
2. Use only 0.254mm | 0.010" shims for setting front clearance of impellers 21, 29, 33 and
37.
3. At completion of stacking remove one 0.254mm | 0.010" shims from front of (suction
side) impellers 21, 29, 33 and 37.
Table 6: BP200 impeller stack clearance
BP200 Impeller Stack
1st stack 4 stages
2nd stack
5th to 8th stages
3rd stack
9th to 12th stages
4th stack
13th to 16th stages
5th stack
17th to 20th stages
6th stack
21st to 24th stages
7th stack
25th to 28th stages
8th stack
29th to 32nd stages
9th stack
33rd to 36th stages
10th stack
37th to 40th stages
11th stack
41st to 44th stages
12th stack
45th to 48th stages
Required Front Clearance
+1.016mm ± 0.127mm | +.040" ±.005"
+0.508mm ± 0.127mm | +.020" ±.005"
+0.508mm ± 0.127mm | +.020" ±.005"
+0.635mm ± 0.127mm | +.025" ±.005"
+ 0.762mm ± 0.127mm | +.030" ±.005"
+0.889mm ± 0.127mm | +.035" ±.005"
Required Front Clearance
+1.016mm ± 0.127mm | +.040" ±.005"
+1.016mm ± 0.127mm | +.040" ±.005"
+1.016mm ± 0.127mm | +.040" ±.005"
+0.635mm ± 0.127mm | +.025" ±.005"
+0.635mm ± 0.127mm | +.025" ±.005"
+0.635mm ± 0.127mm | +.025" ±.005"
+0.635mm ± 0.127mm | +.025" ±.005"
+0.635mm ± 0.127mm | +.025" ±.005"
+ 0.762mm ± 0.127mm | +.030" ±.005"
+ 0.762mm ± 0.127mm | +.030" ±.005"
+ 0.762mm ± 0.127mm | +.030" ±.005"
+ 0.762mm ± 0.127mm | +.030" ±.005"
Disassembly and reassembly
17
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