Gorman-Rupp Pumps 62E31-B All serial numbers - Manual (Page 14)

OM−04020 60 SERIES PUMPS
PAGE C − 1 OPERATION
OPERATION − SECTION C
GENERAL INFORMATION
Review all SAFETY information in Section A.
Follow the instructions on all tags, labels and
decals attached to the pump.
This pump is designed to handle petro-
leum products or other similar hydro-
carbon liquids. Do not attempt to pump
water, corrosive
materials, or any liq-
uids which may damage the pump or en-
danger personnel as a result of pump
failure.
Pump speed and operating condition
points must be within the continuous per-
formance range shown on the curve (see
the Parts List Manual, Page 1).
PRIMING
Install the pump and piping as described in IN-
STALLATION. Make sure that the piping connec-
tions are tight, and that the pump is securely
mounted. Check that the pump is properly lubri-
cated (see LUBRICATION in MAINTENANCE
AND REPAIR).
Never operate this pump unless there is
liquid in the pump casing. The pump will
not prime when dry. Extended operation of
a dry pump will destroy the seal assembly.
Since this pump is not a self-priming pump, it will
require an external priming device when installed
in a static lift application. Many standard centrifu-
gal models are equipped with a hand operated
vacuum pump, exhaust primer, or ejector for this
purpose. If a priming device was not furnished with
the pump, it may be ordered from the factory as an
option.
Before attempting to operate the priming device,
close the discharge throttling valve. (Installation of
a spring-loaded check valve is also recommended
to facilitate priming.) Once the pump is fully
primed, close the valve between the priming de-
vice and pump to preserve the prime. Start the
pump, if not already in operation, and open the dis-
charge valve slowly and fill the discharge line.
When installed in a flooded suction application,
simply open the system valves and permit the in-
coming liquid to evacuate the air. After the pump
and piping system have completely filled, evacu-
ate any remaining air pockets in the pump or suc-
tion line by loosening pipe plugs or opening bleed-
er valves.
If the pump is installed within a closed
building such as a pump house, venting
lines to the outside of the building should
be installed in accordance with National
and local codes.
Hand Primers
Hand-operated primers are usually mounted on
the pump and, when operated, draw air out of the
suction line and casing.
To prime a pump with a hand vacuum pump open
the cock on the pump priming line. Operate the
hand pump until liquid flows out of the check valve
on the bottom of the primer pump. Once the pump
is primed, close the valve located between the