3. Remove mechanical seal by inserting two screwdrivers
behind seal collar, and gently lever collar and seal
assembly forward on shaft. Use extreme care not to
mar shaft surface. Remove seal seat and rubber cup
from recess in wearplate.
4. Remove the four screws holding the adpater to the
motor and remove the adapter.
5. The stub shaft is held in place with set screws and
Loctite* RC/680 retaining ring compound. Extreme
care must be taken not to damage the motor shaft and
bearings when removing the stub shaft. Heat shaft
joint area to facilitate disassembly of set screws and
stub shaft from motor shaft. DO NOT EXCEED 300°F
when heating joint area. Once joint area has been
heated, remove set screws and slide stub shaft from
motor shaft.
ASSEMBLY
1. Liberally apply Loctite RC/680 retaining compound to
the motor shaft and slide the stub shaft on, positioning
the base of the stub shaft 0.37" from the bolt mounting
surface of the motor and two of the four set screw
holes over the keyway in the motor shaft. For clarifi-
cation refer to Figure 1 below. Loctite aids in preventing
fretting and subsequent shaft failure. Apply Loctite to
the two dog point (flat point) set screws, position in the
set screw holes aligned with the keyway of the motor
shaft and torque to 55 - 60 in. lbs. Apply Loctite to the
two cup point set screws and torque to 85 - 90 in. lbs.
Wipe off excess Loctite.
2. Replace the adapter on the motor and torque the four
mounting screws to 20 ft. lbs.
3. Replace mechanical seal by sliding spacer onto shaft
up to locating shoulder, then smear shaft with light
lubricating oil. Push on seal gently until it engages with
spacer. Fit rubber cup and seal seat into wearplate.
4. Insert impeller in pump body, fit O-ring in each end of
the pump body.
5. Slide wearplate and body assembly over shaft, posi-
tion wearplate in housing. Fit body to pedestal with
screws. Torque screws to 60 in. lbs.
NOTE: A gap should be maintained between bearing
housing and body. DO NOT overtighten screws.
6. Fit end cover and end cover screws. Torque screws to
60 in. lbs.
7. Changing Pump Rotation (looking at end cover):
a. Clockwise Rotation: Insert impeller into pump body
with blades bending counterclockwise.
b. Counterclockwise Rotation: Insert impeller into
pump body with blades bending clockwise.
OPERATING INSTRUCTIONS
(Cont)
factor of one. Due to high bearing loads, motor should
be ball bearing equipped with the front bearing locked
against axial movement. Motor should be capacitor
start and foot mounted.
3. SPEEDS – 100 RPM to the maximum shown in the
performance curves. Consult the factory for operation
at speeds above these shown. For longer pump life,
operate at lowest possible speeds. Lower speeds are
required for viscous liquids. Consult the factory for
proper speeds and horsepower requirements.
4. SELF-PRIMING – Primes at low or high speeds. For
vertical dry suction lift of 10 feet, a minimum of 860
RPM is required. Pump will produce suction lift up to
22 feet when wet. BE SURE SUCTION LINES ARE
AIRTIGHT OR PUMP WILL NOT SELF-PRIME.
5. DISCHARGE – When transferring liquids further than
25 feet, use one size larger discharge line than dis-
charge port size.
6. RUNNING DRY – Unit depends on liquid pumped for
lubrication. DO NOT RUN DRY for more than 30 sec-
onds. Lack of liquid will damage the impeller and seal.
7. CHEMICAL COMPATIBILITY – Consult the Chemical
Resistance Guide in the JABSCO Industrial Pump
Catalog (available upon request from ITT Jabsco) or
factory for proper body materials and impeller
compounds. If corrosive fluids are handled, pump life
will be prolonged if pump is flushed with a neutralizing
solution after each use or after each work day. A
Tungsten Carbide Seal variation is available for
pumping liquids that contain abrasives or are highly
corrosive.
8. PRESSURES – Consult Performance Curves for maxi-
mum recommended pressures for pumps in continuous
operation. If pressures exceed those shown, consult
the factory.
9. TEMPERATURES – The operating temperature limits
of the pump depend on the impeller compound. The
following ranges apply: Neoprene - 45° to 180° F (7° to
82° C), Nitrile - 50° to 180° F (10° to 82° C), Viton - 60°
to 180°F (15° to 82°C), EPDM - 45° to 185°F (7° to
85°C).
10. IMPELLER TORQUE – The torque required to initiate
rotation of a new impeller in a dry pump body is:
Standard Pressure Impeller (14282-Series):
Forward = 4.8 pounds force - feet
Reverse = 11.2 pounds force - feet
These values may vary slightly due to impeller com-
pounding, blade set, and body material of construction.
Consult factory for more information.
11. SPARE PARTS – To avoid costly shutdowns, keep a
spare JABSCO impeller, seal and O-ring set on hand.
SERVICE INSTRUCTIONS
DISASSEMBLY
1. Remove the four end cover screws. Remove end
cover and O-ring.
2. Remove the four screws holding the body to the
adapter flange. Slide body, complete with impeller and
wearplate, from adapter and shaft.
Loctite* is a trademark of the Loctite Corporation.
