Goulds Pumps IC - IOM - Manual (Page 67)

230
161
502.31
s Radial clearance
D Nominal diameter
161 Seal chamber/stuffing box cover
230 Impeller
502.31 Optional wear ring
Figure 12: Impeller clearance, drive side
Measure the radial clearance (s) on the drive side of the impeller
on the following sizes only:
• 100-65-315
• 125-80-315
• 125-80-400
• 125-100-315
• 125-100-400
• 150-125-315
• 150-125-400
• 200-150-315
• 200-150-400
Table 3: Impeller clearance limits
Nominal diameter D in mm 60/68 85 100/120/135 155/175 220
Radial
clearance (s)
New
Min. 0.005 in.
(0.15 mm) 0.007 in.
(0.17 mm) 0.008 in.
(0.20 mm) 0.009 in.
(0.22 mm) 0.010 in.
(0.25 mm)
Max. 0.007 in.
(0.19 mm) 0.009 in.
(0.22 mm) 0.009 in.
(0.24 mm) 0.010 in.
(0.27 mm) 0.012 in.
(0.30 mm)
Wear limits 0.030 in.
(0.78 mm) 0.033 in.
(0.85 mm) 0.035 in.
(0.90 mm) 0.041 in.
(1.05 mm) 0.045 in.
(1.15 mm)
Axial clearance
(a)
New 0.031 to 0.047 in. (0.8 to 1.2 mm)
Wear limits 0.067 in. (1.7 mm)
Frame adapter check and replacement
• Replace the frame adapter if it has cracks or excessive corrosion damage.
• Make sure the O-ring surface is clean.
Oil seal replacement
Replace the oil seal if it has cuts or cracks.
Gaskets, O-rings, and seats replacement
• Replace all gaskets and O-rings at each overhaul and disassembly.
• Inspect the seats. They must be smooth and free of physical defects.
• Replace parts if the seats are defective.
Maintenance
Model IC, ICI, ICH, ICIH Installation, Operation, and Maintenance Manual 65