ASSEMBLY
Unpack pump from carton and check for shipping damage.
PUMPS WITH MOTOR
No assembly required. Simply unpack the pump and motor and
examine for any shipping damage. If damage is detected, save
the packaging and notify the carrier immediately.
Remove the shipping plugs from the suction and discharge of
the pump and proceed to the “Installation Requirements” sec-
tion of these instructions.
PUMPS WITHOUT MOTORS
1. Unpack the pump and examine for any shipping damage.
If damage is detected, save the packaging and notify the
carrier immediately. Use the “Supplied and Optional Parts”
section of these instructions to verify that all items have
been received.
2. Prepare to install the pump onto the motor.
a. Remove the protective shroud (Item 22) from the motor
adapter (item 6).
b. Ensure that the set screws in shaft adapter (Item 20)
are loosened to avoid interference when installing.
c. Coat the motor shaft with an anti-seize compound prior
to installation.
3. Properly adjust the spacing between the impeller (item 3)
and the housing cover (item 2).
NOTE: Proper spacing of the Impeller to the housing cover
is critical for performance and to avoid damage to pump
components. A .050” gap is required.
a. Slide the shaft adapter onto the motor shaft until the
impeller is tight against the inside of the housing
cover (look through the pump’s discharge to verify).
Make sure that the shaft adapter’s set screws do not
line up into the motor shaft’s key way.
b. Temporarily bolt the motor adapter to the motor, placing
shims (flat washer - item 10) between the motor
adapter and the motor using two hex-head cap screws
(Item #11) 180° apart (see
Figure 1
).
c. Tighten the four set screws from the shaft adapter onto
the motor shaft.
d. Remove the two temporary hex-head cap screws and
shim washers.
4. Pull the motor adapter flush against the motor face. Install
GP11 SERIES Sealed
Non-Metallic Centrifugal Pumps
Installation and
Maintenance Instructions
four hex-head cap screws and flat washers through the
motor adapter and into the motor and tighten.
5. Verify there is a .050” gap between the impeller and hous-
ing cover by looking into the discharge of the pump.
6. Reinstall the protective shroud.
7. Install the pump into your system according to the “Instal-
lation Requirements” section of these instructions.
INSTALLATION
MOUNTING
Motor or base plate must be securely fastened.
PIPING
•
Always support the piping near the pump to minimize
stress and strain on the pump’s casing.
•
Minimize frictional losses by increasing the piping size by
one diameter.
•
Use a minimal number of bends, keeping any bends at
least a distance of ten pipe diameters away from the pump.
•
Install valves on the suction and discharge lines. Place the
valves within a distance of ten pipe diameters away from
the pump.
•
Ensure that the piping is leak free.
•
Position the pump as close to the liquid source as possible.
•
Maintain a flooded suction at all times.
PUMPS WITH COOLING (PRESSURE) COLLARS
A cooling collar provides a water flush to the pump’s seal. This
is necessary when pumping hot liquids or liquids that tend to
build up or crystallize around the seal faces. If your pump is
supplied with a cooling collar, proper water flow and pressure
are critical to the operation of the pump.
1. Plumb a water supply to the cooling collar. Use 1/8” NPT
threaded holes for the water inlet and drain lines. Either
hard pipe or flexible tubing is suitable.
2. Adjust the water flow and pressure of the flush/cooling
water BEFORE starting the pump.
Figure 1
1
