Johnson J User Manual

JABSCO
Bronze
Plain Bearing Pump
TECHNICAL DATA
MODELS
AL 1/S" - AL 1/4"
OPERATING INSTRUCTIONS
1. INSTALLATION-Pump may be mounted in any
position. The rotation of the pump shaft determines
the location of the pump's intake and discharge
ports , refer to dimensional drawing. Before installing,
turn the pump shaft in the direction of the operating
rotation.
2. DRIVE-Belt or Direct with flexible coupling.
BELT DRIVE- Overtight belt load will reduce pump
bearing life. Direct Drive recommended for
operating speeds above 2100 RPM.
DIRECT DRIVE- Clearance should be l eft between .
drive shaft and pump shaft when installing
coupling. Always mount and align pump and
drive shaft before tightening the coupling set
screw.
3. SPEEDS-100 RPM to the maximum shown in the
performance table. For lon ger pump life, operate at
lowest possible speeds .
4. SELF -PRIMING-Primes at low or high speeds.
For vertica l dry suction lift of 15 feet, a minimum of
800 RPM is required. Pump will produce suction lift
up to 22 feet when wetted. BE SURE SUCTION
LINES ARE AIR TIGHT OR PUMP WILL NOT
SELF PRIME.
5. RUNNING DRY -Unit depends on liquid pumped
for lubrication. DO NOT RUN DRY for more than
30 seconds. Lack of liquid will burn the impeller .
6. CAUTION-Do not pump light fraction petroleum
derivatives, solvents, thinners, highly concentrated
or organic acids. If corrosive fluids are handled,
pump life will be prolonged, if flushed with water
after each use or after each work day.
7. PRESSURES- For continuous operation, pressure
should not exceed 20 PSI for the standard Model
AL ¥4" orAL%".
8. TEMPERATURES-45 ° - 120° F. use standard im-
peller. 45° - 180° F.
use special -08 lln.peller. 27° -
100° F. use
special -09 impeller.
9. FREEZING WEATHER-Drain unit by loosening
end cover. The following anti-freeze compounds can
be used without any adverse effects to the neoprene
impeller: Atlas "Permaguard", DuPont "Zerex" and
"Telar'', Dow Chemical "Dowguard" and Olin Math-
ison "Pyro". Most methyl alcohol (methanol) based
anti-freeze can be used. DO NOT USE PETRO -
LEUM BASED ANTI-FREEZE COMPOUNDS OR
RUST INHIBITORS.
10. GASKET-Use standard pump part. Thicker gasket
will reduce priming ability. A thinner gasket will
cause impeller to bind.
11.
PACKING-Use standard pump part. Having pack-
ing nut too tight will increase the torque requirement
and may burn packing or groove the shaft under
the packing.
12 . GREASE CUPS-Fill grease cups with water pump
grease ( Marfak 2HD or equivalent).
13. SPARE PARTS-A JABSCO Service Kit SK~l
should be kept on hand to service all but the most
badly worn AL %" or AL %" pumps.
DIMENSIONAL DRAWING-----------.
AL .!_ _ _!_ NP)
8
8
2-PLACES
1 1 .
AL ___ NPT
4 4
11
3
6
LG. FLAT
DISCHARGE
.281DIA. /
2 PLACES
WARRANTY: All products of the company are sold and all services of the company are offered subject to the company's
warranty, terms and conditions of sale, copies of which will be furnished upon request.
PUMP
COMPANY
1415 DALE WAY • COSTA MESA, CALIF.
JoblCo Pump Company, Ltd. Clwnhunt, Hotls, England , Jobsco Fump Company of Conodo, Ud. ScCIIborough, Ont,.io, Conado
l"ltiNT&D IH U • A

Johnson J Specifications

General

Brand	Johnson
Model	J
Category	Saw
Language	English