Gorman-Rupp Pumps 3D-E1.5 1P 883504 and up - Manual (Page 9)

OM-03604 D SERIES
PAGE B - 2 INSTALLATION
or replaced to ensure maximum pump serv­
ice.
If the maximum shelf life has been exceeded, or if
anything appears to be abnormal, contact your
Gorman‐Rupp distributor or the factory to deter­
mine the repair or updating policy. Do not put the
pump into service until appropriate action has
been taken.
POSITIONING PUMP
Do not install and operate a non‐explo­
sion proof motor in an explosive atmo­
sphere.
Lifting
Pump unit weights will vary depending on the
mounting and drive provided. Check the shipping
tag on the unit packaging for the actual weight, and
use lifting equipment with appropriate capacity.
Drain the pump and remove all customer‐installed
equipment such as suction and discharge hoses
or piping before attempting to lift existing, installed
units.
The pump assembly can be seriously
damaged if the cables or chains used to lift
and move the unit are improperly wrapped
around the pump.
Mounting
Locate the pump in an accessible place as close as
practical to the liquid being pumped. Level mount­
ing is essential for proper operation.
The pump may have to be supported or shimmed
to provide for level operation or to eliminate vibra­
tion.
After the pump has been positioned, block the
wheels and secure the pump to prevent creeping.
SUCTION AND DISCHARGE PIPING
Pump performance is adversely effected by in­
creased suction lift, discharge elevation, and fric­
tion losses. See Page E‐1 to be sure your overall
application allows the pump to operate within the
safe operation range.
Materials
Either pipe or hose maybe used for suction and
discharge lines; however, the materials must be
compatible with the liquid being pumped. If hose is
used in suction lines, it must be the rigid‐wall, rein­
forced type to prevent collapse under suction. Us­
ing piping couplings in suction lines is not recom­
mended.
Line Configuration
Keep suction and discharge lines as straight as
possible to minimize friction losses. Make mini­
mum use of elbows and fittings, which substan­
tially increase friction loss. If elbows are necessary,
use the long‐radius type to minimize friction loss.
Never pull a line into place by tightening connec­
tions at the pump. Lines near the pump must be in­
dependently supported to avoid strain on the
pump which could cause excessive vibration and
increased diaphragm and gear train wear. If hose‐
type lines are used, they should have adequate
support to secure them when filled with liquid and
under pressure.
Fixed, Rigid Piping
This pump is equipped with an integral suction ac­
cumulator chamber which promotes an efficient
flow of liquid and acts as an air cushion against
shock. Since the air in this chamber will leak away
during pump operation, the air must be replen­
ished periodically. To introduce air into the cham­
ber, stop the pump and remove the suction accu­
mulator plug and integral gasket; this will break