Gorman-Rupp Pumps PA4A60C-B-E30 575/3 1482736 and up - Manual (Page 40)

OM−06440 PA SERIES
MAINTENANCE & REPAIR PAGE E − 13
PUMP AND SEAL DISASSEMBLY
AND REASSEMBLY
Review all SAFETY information in Section A.
Follow the instructions on all tags, label and de-
cals attached to the pump.
This pump requires little service due to its rugged,
minimum-maintenance design. However, if it be-
comes necessary to inspect or replace the wearing
parts, follow these instructions which are keyed to
the Sectional Views (see Figures 1 through 7) and
the corresponding Parts Lists. Maintenance and
repair instructions for the air compressor are cov-
ered separately in the specific literature supplied
by the manufacturers.
Some pump service functions may be performed
without separating the pump end assembly from
the power source. However, the priming chamber
(3, Figure 3) and discharge check valve assembly
(2, Figure 3) must be removed to service most
pump components. The following instructions as-
sume complete disassembly of the pump is re-
quired.
Before attempting to service the pump, lock out
and tag out incoming power to the control box and
take precautions to ensure that it will remain inop-
erative. Close all valves in the suction and dis-
charge lines and drain the pump casing by remov-
ing the casing drain plug (13, Figure 4). Clean and
reinstall the drain plug.
This manual will alert personnel to
known procedures which require spe-
cial attention, to those which could
damage equipment, and to those which
could be dangerous to personnel.
How-
ever, this manual cannot possibly antici-
pate and provide detailed instructions
and precautions for every situation that
might occur during maintenance of the
unit. Therefore, it is the responsibility of
the owner/maintenance personnel to
ensure that only safe, established main-
tenance procedures are used, and that
any procedures not addressed in this
manual are performed only after estab-
lishing that neither personal safety nor
pump integrity are compromised by
such practices.
Before attempting to open or service the
pump:
1. Familiarize yourself with this man-
ual.
2. Lock out and tag out incoming
power to the control box to ensure
that the pump will remain inopera-
tive.
3. Allow the pump to completely cool
if overheated.
4. Check the temperature and make
sure it is cool before opening any
covers, plates, gauges, or plugs.
5. Close the suction and discharge
valves.
6. Vent the pump slowly and cau-
tiously.
7. Drain the pump.
This pump may be equipped with an op-
tional automatic starting system, and
therefore subject to automatic restart.
Keep hands and clothing away from the
unit to prevent injury during automatic
operation. Lock out the power from the
control box to ensure that the pump will
remain inoperative. Failure to do so
may result in serious personal injury.
Obtain the services of a qualified elec-
trician to troubleshoot, test and/or ser-
vice the electrical components of the
control box.