Gorman-Rupp Pumps 612L20B-B 806819 and up - Manual (Page 14)

OM-01919 60 SERIES
OPERATION PAGE C - 1
OPERATION - SECTION C
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 waste­
water, mud or slurries containing speci­
fied entrained solids. Do not attempt to
pump volatile, corrosive or flammable
liquids which may damage the pump or
endanger 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
Section E, 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).
This pump should never be operated unless there
is liquid in the pump casing.
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.
Add liquid to the pump casing when:
1. The pump is being put into service for the
first time.
2. The pump has not been used for a consider­
able length of time.
3. The liquid in the pump casing has evapo­
rated.
Once the pump casing has been filled, the pump
will prime and reprime as necessary.
After filling the pump casing, reinstall
and tighten the fill plug. Do not attempt
to operate the pump unless all connect­
ing piping is securely installed. Other­
wise, liquid in the pump forced out
under pressure could cause injury to
personnel.
Hand‐Operated Priming Pump
The hand‐operated priming pump (see Figure 1) is
designed to draw air out of the suction line and the
pump casing.
The hand‐operated priming pump can be used
while the pump is either stopped or operating.
Close the discharge line check valve (if so
equipped) before engaging the priming device.
To prime the pump, open the cock in the bottom of
the priming pump. Operate the handle of the pump
until all of the air is expelled from the line and a
small amount of liquid flows from the drain cock.
DRAIN
COCK
HANDLE
Figure C-1. Hand Primer Assembly
Once the pump is fully primed, close the cock,
open the discharge line throttling valve and start
the pump.