Maintenance & Repair; Work Safety; Removal From System - Liquiflo H-Series Installation Operation & Maintenance

Liquiflo Installation, Operation & Maintenance Manual
Section 5: Maintenance & Repair
The pump has internal sleeve bearings, wear plates, gears and shafts which require replacement over time
due to physical wear. The center housing of the pump may also incur physical wear and require replacement
(see Appendix 3 for Wear Allowances). O-rings and retaining rings should always be replaced when rebuilding
the pump.
5.1

Work Safety

Caution!
The Magnetic Couplings used in these pumps are extremely powerful.
5.2

Removal from System

Before servicing, prepare the pump as follows:
If the pump was used to move hazardous or toxic fluids, it must be flushed and decontaminated prior to
removal from the system piping. Refer to the Material Safety Data Sheet (MSDS) for the liquid and follow
all prescribed safety precautions and disposal procedures.
1) Flush the pump.
2) Stop the motor and lock out the electrical panel.
3) Close the suction and discharge isolation valves.
4) Disconnect the pump from the system piping.
5) Drain the containment can by removing the 1/8" NPT plug on the pump's front housing (see box below).
Location & Removal of Drain Plug
To drain the containment can, remove the
1/8" NPT plug that is located near the bottom
of the pump's front housing (Pictured).
Caution!
Some trace fluid may remain in the pump
and containment can even after draining.
H&3-Series MAG-DRIVE Gear Pumps
Models H1F-H9F, 31F-39F & 311F
14
1/8" NPT Plug