Bell & Gossett P86101D Series LR Circulators - Manual (Page 3)

PUMP INSTALLATION
Locate the pump so there is sufficient room for inspection,
maintenance and service. Bell & Gossett recommends the
installation of service valves on the suction and discharge of
all circulators to facilitate servicing or replacement of the
circulator without draining the system.
Install suction and discharge flanges or union connectors on
the pipe ends. The use of Teflon
® tape sealer or a high quality
thread sealant is recommended.
Be sure to minimize any pipe-strain on the pump. Support the
suction and discharge piping by the use of pipe hangers near
the pump. Line up the vertical and horizontal piping so that the
bolt-holes in the pump flanges match the bolt-holes in the
pipe flanges. If union connections are used, line up the pump
threads with union tail pieces. DO NOT ATTEMPT TO SPRING
THE SUCTION OR DISCHARGE LINES IN POSITION. THIS
MAY RESULT IN UNWANTED STRESS IN THE PUMP BODY,
FLANGE CONNECTIONS AND PIPING. The code for Pressure
Piping (ANSI B31.1) lists many types of supports available for
various applications.
Bell & Gossett flange gaskets must be installed between the
pump body flanges and the suction and discharge pipe
flanges. Use
7 / 16 " diameter x 1 1 / 2 " long cap screw and match-
ing nut to connect the pump to the flanges.
Apply torque in even increments to both flange bolts until a
value of 115 in-lbs. is reached. Both the suction and discharge
flange bolts must be torqued in this manner.
MODE OF DISCHARGE
The Series LR Circulator can be installed to discharge up or
down, horizontally, left or right, but the motor shaft must
remain in the horizontal position, the arrow on the body must
point in the direction of the flow, the conduit box must be posi-
tioned on the top or to the side of the motor housing (see fig-
ure 2). If the conduit box position must be changed, it is best
to do so before installation. However, if the pump is already
installed, see the section titled “REMOVAL OF PUMP FROM
EXISTING SYSTEM FOR REPLACEMENT” before proceeding.
TO CHANGE THE CONDUIT POSITION
1. Remove the four (4) 1 / 4 -20 Allen screws ( 3 / 16 wrench) while
supporting the motor assembly.
2. Remove the motor assembly from the pump body and
rotate it to the desired position (see figure 2).
3. Replace the Allen screws and tighten evenly in a diagonal
method to 60 in-lbs.
4. Check to see that the impeller turns freely. Insert your finger
in the discharge port of the pump body (the arrow on the
pump body points in the direction of the discharge) until
you can feel the impeller and rotate it with your
fingertip. If the impeller does not turn easily, repeat the dis-
assembly/reassembly process.
FIG. 2
3
WARNING: HOT WATER HAZARD
When disassembling a gasketed joint, always use a
new gasket upon reassembly. NEVER RE-USE OLD
GASKETS. Failure to follow these instructions could result
in serious personal injury, death and/or property damage.
CAUTION: The use of Teflon ® *impregnated pipe
compound and Teflon ® tape on pipe threads pro-
vides lubricity which can lead to overtightening and break-
age. Do not overtighten. Failure to follow this instruction
can result in moderate personal injury from hot water
and/or property damage.
CAUTION: Make sure the power is turned off before
placing anything inside the discharge opening to
move the impeller. Failure to follow these instructions could
result in serious personal injury, death and/or property
damage.
* Teflon is a registared trademark of E. I. DuPont deNemours and Company.
WARNING: HOT WATER HAZARD
Make sure that each flange gasket remains seated in
the flange groove during and after installation. Failure to
follow these instructions could result in serious personal
injury, death and/or property damage.
WARNING: WATER LEAKAGE HAZARD
To prevent leakage, make certain that the flange bolts
or ring nuts have been adequately tightened and that the
solder connections do not leak. Failure to follow these
instructions could result in serious personal injury, death
and/or property damage.