Maintenance - Pentair Pool Products SHURflo GMBN2VA Operating Instructions, Performance, Specifications And Parts Manual

SHURflo Operating Instructions, Performance,
Specifications and Parts Manual
SHURflo Heavy-Duty Cast Iron and Bronze
Rotary Close-Coupled External Gear Pumps
Operation (continued)
GEAR SPEED REDUCER OPTIONS
A gear reducer can be directly mounted
between a standard pump and motor
combination. Gear speed reducers are
available for applications with high
specific gravity, or when viscosities are
greater than 500 SSU, using a standard
1725 RPM motor (See Appendix 2). The
pump relationship between volume
(GPM), pressure (PSI), speed (RPM),
viscosity, specific gravity and horsepow-
er is shown on performance chart in
Shurflo Motor Manual form L-4082.
13. Unit is ready for operation.

Maintenance

Make certain that the
power source is
disconnected before attempting to service or
disassemble any components!
If the power disconnect is out of sight, lock
it in the open position and tag to prevent
application of power.
CLEANING
Clean the suction line filter at regular
intervals.
Figure 10 - Shaft and Seal Assembly
Form L-4087 (12/09)
Bronze Models GMBN2VA, GMBN2VA3, GMBN2VA33, GMBN3VA, GMBN3VA4, GMBN3VA43, GMBN4VA,
GMBN4VA5, GMBN4VA53, GMBN5VB, GMBN5VB6, GMBN5VB63, GMBN6VC, GMBN6VC7, GMBN6VC73
Cast Iron Models GMCV2VA, GMCV2VA3, GMCV2VA33, GMCV3VA, GMCV3VA4, GMCN3VA43, GMCV4VA,
GMCV4VA5, GMCV4VA53, GMCN5VB, GMCV5VB6, GMCV5VB63, GMCV6VC, GMCV6VC7, GMCV6VC73
ELECTRIC MOTOR (IF SUPPLIED)
Properly selected and installed, electric
motors are capable of operating for
years with minimal maintenance.
Periodically clean dirt accumulations
from open-type motors, especially in
and around vent openings, preferably
by vacuuming (avoid imbedding dirt in
windings). Oil and maintain as recom-
mended by motor manufacturer.
GENERAL
Periodically check that electrical connec-
tions are tight. Pump should be drained
if placed in an area that is subject to
freezing temperatures.
PUMP REPAIR
DISASSEMBLY
(Refer to Figure 12 for Reference
Numbers and Figures 10 & 11 for
detailed seal and shaft assemblies.)
1. Pump Removal from Motor
a. Remove four bolts (Ref. No 25)
from motor adapter (Ref. No 14)
and gently pull pump assembly
from motor.
b. Pump drive coupler does not
need to be removed from motor
unless motor needs to be
replaced. (If so, refer to Assembly
on Page 5.)
Figure 11 - Seal Types and Parts Identification
10
2. Gear and Shaft Assembly Removal
a. Remove cover plate (Ref. No. 1)
(held by eight screws) and gasket
(Ref. No. 3) if needed. Gently tap
cover plate with rubber mallet to
free it from dowel pins. Once
cover is removed, the idler shaft
and gear assembly can be pulled
out of pump body (Ref. No. 4).
b. Remove the idler gear (Ref. No.
21) from the shaft (Ref. No. 23)
by removing retaining rings
(Ref. No. 22), then slide gears
off the shaft end.
c. The drive gear (Ref. No 21) can be
pulled out. Before drive shaft
(Ref. No. 5) can be removed from
body (Ref. No. 4), remove
woodruff key (Ref. No. 24) by
gently tapping key with drift pin.
(Do not damage key or keyway
upon removal.)
3. From the drive shaft end of the gear
pump, remove the internal snap
ring (Ref. No. 28) from the body
(Ref. No. 4). The drive assembly,
which consists of the drive shaft
(Ref. No. 5), o-ring (Ref. No. 20), seal
assembly (Ref. Nos. 7 & 8), seat
retainer (Ref. No. 19), and retaining
rings (Ref. No. 6), can now be