EBARA EFQT8 - Manual (Page 27)

EBARA Fluid Handling 26
WARNING!
Use lifting and moving equipment in good
repair and with adequate capacity to prevent
injuries to personnel or damage to equipment.
Back Cover And Wear Plate Removal
(Figure 1)
The wear plate (20) is easily accessible and may
be serviced by removing the back cover assembly
(32). Before attempting to service the pump,
remove the pump casing drain plug (21) and drain
the pump. Clean and reinstall the drain plug.
Remove the hand nuts (29) and pull the back cover
and assembled wear plate (20) from the pump
casing (1). Inspected the wear plate, and replace it
if badly scored or worn. To remove the wear plate,
disengage the hardware (24, 25 and 26).
Inspect the back cover O-ring (22) and replace it if
damaged or worn.
Suction Check Valve Removal
(Figure 1)
If the check valve assembly (41) is to serviced,
remove the check valve pin (4), reach through the
back cover opening and pull the complete
assembly from the suction flange.
NOTE
Further disassembly of the check valve is not
required since it must be replaced as a
complete unit. Individual parts are not sold
separately.
Rotating Assembly Removal
(Figure 1)
The rotating assembly (2) may be removed from
either side of the pump casing (1); however, it is
recommended that it be removed through the back
cover opening.
PUMP AND SEAL DISASSEMBLY AND
REASSEMBLY
Review all SAFETY Information in Section A.
Follow the instructions on all tags, label and decals
attached to the pump.
This pump requires little service due to its rugged,
minimum-maintenance design. However, if it
becomes necessary to inspect or replace the
wearing parts, follow these instructions which are
keyed to the sectional views (see Figures 1 and 2)
and the accompanying parts lists.
Many service functions may be performed by
draining the pump and removing the back cover
assembly. If major repair is required, the piping
and/or power source must be disconnected. The
following instructions assume complete disassembly
is required.
Before attempting to service the pump, disconnect
or lock out the power source and take precautions
to ensure that it will remain inoperative. Close all
valves in the suction and discharge lines.
For power source disassembly and repair, consult
the literature supplied with the power source, or
contact your local power source representative.
WARNING!
Before attempting to open or service the pump:
1. Familiarize yourself with this manual.
2. Disconnect or lock out the power source
to ensure that the pump will remain
inoperative.
3. Allow the pump to cool if overheated.
4. Check the temperature before opening
any covers, plates, or plugs.
5. Close the suction and discharge valves.
6. Vent the pump slowly and cautiously.
7. Drain the pump.