Goulds Pumps XHD - IOM - Manual (Page 70)

Maintenance
Stuffing box cover
The stuffing box cover used with the dynamic seal option is equipped with two lantern ring
connections:
• One expeller flush connection
• One expeller drain connection
The lantern ring connection can be used to inject flush liquid or grease when required on
specific applications.
Drain tap
The drain tap allows you to drain the liquid that remains in the expeller chamber upon pump
shutdown. Consider removing this liquid before you service the pump in order to prevent it from
hardening, or protect the pump during freezing weather. The flush tap allows injection of water
or steam directly into the repeller chamber near the base of the repeller vanes.
Injected liquid
Injected liquid can be used in conjunction with the drain in order to flush the chamber of solids
or potentially harmful liquids.
Disassembly
Disassembly precautions
WARNING:
• This manual clearly identifies accepted methods for disassembling units. These methods must be
adhered to. Trapped liquid can rapidly expand and result in a violent explosion and injury. Never
apply heat to impellers, propellers, or their retaining devices to aid in their removal unless explicitly
stated in this manual.
• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical
injury.
• Crush hazard. The unit and the components can be heavy. Use proper lifting methods and wear
steel-toed shoes at all times.
• The pump can handle hazardous and toxic fluids. Identify the contents of the pump and observe
proper decontamination procedures in order to eliminate the possible exposure to any hazardous or
toxic fluids. Wear the proper personal protective equipment. Potential hazards include, but are not
limited to, high temperature, flammable, acidic, caustic, explosive, and other risks. You must handle
and dispose of pumped fluid in compliance with the applicable environmental regulations.
• A small amount of liquid will be present in certain areas like the seal chamber.
NOTICE:
• Avoid injury. Worn pump components can have sharp edges. Wear appropriate gloves
while handling these parts.
• Make sure that all replacement parts are available before you disassemble the pump for
overhaul.
Tools required
In order to disassemble the pump, you need these tools:
• Allen wrenches
• Metric stud drivers
• Cleaning agents and solvents
• Chisel
• Dial indicators
• Hoist and strap
• Pry bars
68 XHD Installation, Operation, and Maintenance Manual