ITT TruBlue 710, Инструкция по установке, эксплуатации и обслуживанию

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122
Pre-assembly inspections
Model 710 TruBlue Installation, Operation, and Maintenance Manual 58
Impeller replacement
This table shows the criteria for replacing the impeller:
Impeller parts When to replace
Vane edges When you see cracks, pitting, or corrosion damage
Impeller balance
Confirm impeller is to ISO balance grade G6.3
Frame adapter check and replacement
• Replace the frame adapter if it has cracks or excessive corrosion damage.
Oil seal replacement
Replace the oil seal if it has cuts or cracks.
Gaskets, O-rings, and seats replacement
WARNING:
Risk of death or serious injury. Leaking fluid can cause fire and/or burns. Replace all gaskets
and O-rings at each overhaul or disassembly.
• 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.
Shaft replacement guidelines
Straightness check
Figure 26: Straightness check
Replace the shaft (122) if runout exceeds the values in this table:
Table 1: Shaft runout tolerances for sleeve fit and coupling fit
Seal fit in millimeters | inches Coupling fit in millimeters |
inches
Shaft 0.051 | 0.002 0.025 | 0.001
Shaft and sleeve check
Bearing-frame inspection
Checklist
Check the bearing frame for these conditions:
• Visually inspect the bearing frame and frame foot for cracks.
• Check the inside surfaces of the frame for rust, scale, or debris. Remove all loose and
foreign material.
• Make sure that all lubrication passages are clear.
• If the frame has been exposed to pumped fluid, inspect the frame for corrosion or pitting.