Gorman-Rupp Pumps 62 1/2A1-GX390 S/2 93740 CA and up - Manual (Page 12)

OM−06223 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 clear
water for high pressure distribution. Do
not attempt to pump volatile, corrosive,
or flammable liquids which may dam-
age the pump or endanger personnel as
a result of pump failure.
Never tamper with the governor to gain
more power. The governor establishes
safe operating limits that should not be
exceeded. Continuous duty perform-
ance is limited to 3600 RPM; however
the engine may be run at 3800 RPM dur-
ing intermittent fire fighting service.
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).
Hand Primer
Since this pump is not self-priming, it is equipped
with an hand−operated vacuum priming pump.
(see Figure 1).
Figure 1. Hand Primer Assembly
The hand−operated priming pump, connected di-
rectly to the pump, is designed to draw air out of
the suction line and the volute. The hand−oper-
ated priming pump can be used while the pump is
either stopped or operating. To prime the pump,
close the drain cock in the hand primer. Operate
the handle of the pump until liquid flows into the
pump and the pump is fully primed. After use,
open the drain cock in the hand primer and drain
any liquid from the hand primer.
STARTING
Consult the operations manual furnished with the
engine.
OPERATION
Leakage
No leakage should be visible at pump mating sur-
faces, or at pump connections or fittings. Keep all
line connections and fittings tight to maintain maxi-
mum pump efficiency.
Liquid Temperature And Overheating
The maximum liquid temperature for this pump is
160
_ F (71,1_C). Do not apply it at a higher operat-
ing temperature.
Overheating can occur if operated with the valves
in the suction or discharge lines closed. Operating
against closed valves could bring the liquid to a
boil, build pressure, and cause the pump to rup-
ture or explode. If overheating occurs, stop the
pump and allow it to cool before servicing it. Refill
the pump casing with cool liquid.