HP Hewlett Packard Water Pump 020598 User Manual

Operating Instructions & Parts Manual  
020598 and 020599  
Please read and save these instructions. Read carefully before attempting to assemble, install,  
operate or maintain the product described. Protect yourself and others by observing all safety  
information. Failure to comply with instructions could result in personal injury and/or proper-  
ty damage! Retain instructions for future reference.  
Self-Priming Engine-Driven  
Centrifugal Pumps  
Description  
These centrifugal pumps include a precision mechanical seal with stainless steel  
spring, EPDM seals, carbon face and ceramic seat, and a built-in check valve for  
better self-priming capabilities (up to 20 ft. suction lift). Clog resistant impeller is  
capable of handling solids up to 7/16" diameter. Pumps include molded carrying  
handle, rubber foot pads, and two 2" NPT pipe nipples. Handle liquids from 40º to  
130º F (4º to 54º C). For use with nonflammable, non-abrasive liquids compatible  
with pump component materials.  
Applications include pumping clear, clean water, salt water, and some liquid fertil-  
izers and herbicides. An optional Buna N Seal/O-ring/Flapper Kit (see Repair Parts  
List) is available for pumping additional liquids. If the liquid is not compatible with  
Buna-N (optional) or EPDM (standard) rubber materials, do not use these pumps.  
stand. This information is provided for  
Specifications  
SAFETY and to PREVENT EQUIPMENT  
PROBLEMS. To help recognize this  
information, observe the following  
symbols:  
Suction inlet . . . . . . . . . . . . . . . . . . 2" †  
Discharge outlet . . . . . . . . . . . . . . . 2" †  
(†) Standard NPT (female) pipe thread.  
Dimensions (overall)  
Danger indicates an  
imminently haz-  
ardous situation which, if not avoided,  
WILL result in death or serious injury.  
020598 . . . . . . . . 13" H x 15" W x 18" L  
3
3
1
020599 . . . . . . . . . 18 ⁄8L x 17 ⁄8W x 15 ⁄  
4H  
Engine  
020598 . . . . . . . . . . . . . . . . . 3.5 HP B&S  
020599 . . . . . . . . 5.5 HP B&S OHV Intek  
Warning indicates a  
potentially haz-  
ardous situation which, if not avoided,  
COULD result in death or serious injury.  
Oil type . . . . . . . . . SAE 30W Detergent  
Weight  
Caution indicates a  
potentially haz-  
ardous situation which, if not avoided,  
MAY result in minor or moderate injury.  
020598 . . . . . . . . . . . . . . . . . . . . 38 lbs.  
020599 . . . . . . . . . . . . . . . . . . . . 43 lbs.  
Material . . . . Glass-filled polypropylene  
NOTE: Indicates important information  
that, if not followed, may cause dam-  
age to equipment.  
Safety Guidelines  
Failure to follow any  
warnings/ cautions  
Unpacking  
After unpacking the unit, inspect care-  
fully for any damage that may have  
occurred during transit. Make sure to  
tighten fittings, bolts, etc., before put-  
ting unit into service.  
can result in personal injury, pump dam-  
age, and/or property damage.  
This manual contains information that  
is very important to know and under-  
3824-254-00 FW0520 0703 Supercedes NEW  
7/2003  
 
Operating Instructions and Parts Manual  
Models 020598 and 020599  
15. Prevent accidental starting by  
General Safety (continued)  
always removing spark plug or by  
Spilled gasoline on a hot engine  
disconnecting and grounding spark  
may cause fire or an explosion. Fill  
plug wire before working on engine  
gasoline tank out-of-doors and  
or the equipment driven by engine.  
wipe up any spills.  
16. Familiarize yourself with all con-  
e. Provide a fire extinguisher nearby  
trols. Learn how to stop an engine  
when working with gasoline. Be  
sure extinguisher is in operating  
quickly in an emergency.  
17. Keep the equipment and surround-  
ing area clean. Remove all oil  
deposits from equipment and sur-  
rounding area. Accumulations of  
grease and oil may present a fire  
hazard and can cause engine dam-  
age. Cleaning rags and other flam-  
mable waste materials must be  
stored in approved metal contain-  
ers.  
condition – check the pressure  
gauge or indicator. Be familiar  
with its proper use. Consult local  
fire department for the correct  
type of extinguisher for your appli-  
cation. Extinguishers rated ABC by  
the National Fire Protection  
Association are appropriate for  
most applications.  
IMPORTANT: Positively no smoking!  
18. All visitors should be kept at a safe  
distance from the working area.  
Keep children away from power  
equipment. Keep work area clean.  
Cluttered areas invite accidents.  
12. DO NOT RUN THE ENGINE IN AN  
ENCLOSED AREA!! Exhaust fumes  
contain carbon monoxide which is  
an odorless and poisonous gas. If  
equipment is located in an enclosed  
area, use an exhaust line to the out-  
side and regularly check the exhaust  
system for leaks. Be sure the area is  
well ventilated.  
19. When shutting off a gasoline  
engine, be sure it is completely  
stopped before leaving the work  
area.  
13. Check engine oil and fuel levels  
before initial start up each day. Stay  
away from moving parts. Avoid  
wearing loose jackets, shirts, and  
ties. Make sure all nuts and bolts  
are secure. Keep power shields and  
guards in place. If adjustments must  
be made while the unit is running,  
use extreme caution around hot  
manifolds, moving parts, etc.  
Installation  
IMPORTANT: For installations where  
property damage might result from an  
inoperative or leaking pump due to  
power outages, discharge line blockage  
or any other reason, a back-up  
system(s) and/or warning system(s)  
should be used.  
1. Locate pump as close to the fluid  
source as possible, making the suc-  
tion line as short and direct as possi-  
ble.  
14. Do not operate this equipment  
when mentally or physically  
fatigued.  
The unit should be  
placed where the  
Be careful not to  
touch the exterior of  
the engine, especially the muffler and  
the surrounding area. The engine is hot  
enough to be painful or cause injury!  
pump/engine is protected from the  
weather and extremes of heat, cold and  
humidity.  
3
 
020598 and 020599  
Operating Instructions and Parts Manual  
Self-Priming Engine-Driven  
Centrifugal Pumps  
should not be greater than 25% of  
Installation (continued)  
the suction inlet size for solid han-  
2. Mount the unit on a solid founda-  
dling pumps and 50% of the suction  
inlet size for trash pumps.  
tion. On fixed installation, install  
both a union and a gate valve (not  
furnished) on the discharge side of  
the pump for service convenience.  
Do not use a globe  
Operation  
1. Fill the engine crankcase with oil as  
specified in the engine manual. If the  
engine has no dipstick, then fill the  
crankcase with oil until the oil over-  
flows (starts spilling out of the  
crankcase). Periodically check oil level  
thereafter.  
or other restricting  
type of valve at the discharge, as this  
would seriously restrict the capacity of  
the pump.  
3. Attach suction line piping to the suc-  
tion inlet and discharge line piping  
to the discharge outlet. The suction  
line should be positioned such that  
there is a continual upward slope  
from the fluid source to the pump.  
Avoid using loops or sections of pipe  
or fittings which might permit air to  
become trapped.  
2. Fill the gasoline tank as required.  
Refer to engine instruction booklet.  
Never add gasoline  
to a hot engine!  
See General Safety Information for  
proper handling of gasoline.  
3. Fill the pump with liquid through the  
pump discharge or the priming port  
supplied with these units. It may be  
convenient to screw in a service tee  
or a tee with a nipple into the dis-  
charge, so that the pump can be  
filled (using the upper leg of the tee)  
without disconnecting the discharge  
hose or pipe. The vertical leg must be  
closed with a pipe plug during  
pumping. Remember, the pump is  
self-priming only when the pump  
casing has been filled. The pump  
should prime and re-prime without  
refilling. Refilling is necessary occa-  
sionally if an unusual siphoning has  
occurred, if the fluid has been lost by  
evaporation, and when the unit is  
moved to a new location.  
IMPORTANT: If plastic or fabric hose is  
used for the suction piping, it should  
be of a reinforced type so as not to col-  
lapse under suction. The discharge pip-  
ing should be at least the same size as  
the discharge connection. Suction pip-  
ing should be the same size as the dis-  
charge piping or one size larger. Unless  
long horizontal runs are involved, dis-  
charge piping should not be larger  
than suction piping. Avoid using  
looped sections of pipe which might  
permit air to become entrapped. Assure  
air-tight pipe connections with the use  
of a pipe joint sealant.  
4. A foot-valve may be used on the  
suction line to assist in faster pump-  
ing. The foot-valve should be  
installed when the suction lift is over  
10 feet or when the suction line is  
over 10 feet long.  
Do not run pump  
dry, as permanent  
damage to the mechanical seal will  
result.  
5. A suitable suction strainer should be  
attached to the suction line so that  
large pieces of foreign material are  
not drawn into the pump. The maxi-  
mum opening in the suction strainer  
4. Start the engine, following instruc-  
tions in the engine manual.  
5. With a suction lift of 5 to 10 feet, the  
pump should discharge liquid within  
4
 
Operating Instructions and Parts Manual  
Models 020598 and 020599  
flushed after each use.  
Operation (continued)  
2. Clean the suction line strainer at reg-  
ular intervals.  
one or two minutes. A suction lift of  
20 feet can take 5 minutes running  
time to pick up a prime. If pumping  
does not start within this time, shut  
off the engine, let unit cool down  
about 5 minutes, refill pump casing  
and retry. If engine does not start,  
refer to Engine Manual. If pump  
does not prime after 2 tries, refer to  
“Troubleshooting Chart” in this man-  
ual.  
3. If the gas engine is equipped with a  
spark arrestor screen in the muffler,  
it should be inspected for wear peri-  
odically, and replaced when neces-  
sary.  
NOTE: For information pertaining to  
the engine and engine parts, consult  
the Engine Manual or contact the near-  
est authorized service representative or  
the manufacturer.  
6. Properly fueled and lubricated, the  
pump/engine unit will run automati-  
cally without attention to the con-  
trols. The gasoline engine has a built-  
in governor and will adjust the speed  
of the engine automatically depend-  
ing on the volume of water being  
delivered.  
4. Periodically check nuts and bolts on  
engine, mounting frame and pump.  
Since this is a gas engine pump,  
vibration levels tend to loosen nuts  
and bolts faster than normal. Use  
Loctite (thread sealant) on threads or  
lockwashers if necessary.  
Even though this  
unit will operate  
MECHANICAL SEAL REPLACEMENT  
Refer to Figures 1, 2, and 3.  
with minimal supervision, it should not  
be left operating by itself. Depending  
on the application and area unit is oper-  
ating (high traffic, people in area, etc.)  
will dictate the necessity of having  
someone watching over the unit.  
IMPORTANT: Replace seal seat, (Ref.  
No. 22) and seal head (Ref. No. 23) at  
the same time to ensure proper mating  
of mechanical seal components!  
1. Unthread fasteners (Ref. No. 16), nuts  
(Ref. No. 25) and remove casing (Ref.  
No. 15) and casing seal (Ref. No. 7)  
from adapter (Ref. No. 3). Unthread  
fasteners (Ref. Nos. 11 and 19) and  
remove volute (Ref. No. 20) and  
Maintenance  
To prevent acciden-  
tal starting always  
remove spark plug, or disconnect and  
ground spark plug wire before attempt-  
ing to service or remove any compo-  
nent.  
1. If the pump is located in an area sub-  
ject to freezing temperature, the  
volute seal (Ref. No. 6) from adapter.  
2. Unthread impeller fastener (Ref. No.  
10) and remove impeller (Ref. No. 9),  
impeller seal (Ref. No. 4) and shims  
(Ref. No. 21).  
pump should be drained when not in  
operation. Also, the pump should be  
Performance Chart  
GPH of Water at Total Head in Feet  
20' 30' 40' 50' 60' 70'  
Max.  
90' Head*  
Model  
10'  
80'  
020598  
020599  
8460 7680 6840 6000 5100 4140 3180 2100 840 94 ft.  
8460 7920 7440 6960 6360 5760 5040 4200 3360 125  
(*) Shut-off; to convert to psi, divide by 2.31  
5
 
Operating Instructions and Parts Manual  
020598 and 020599  
Self-Priming Engine-Driven  
Centrifugal Pumps  
9. After seal seat is in place, ensure  
that it is clean and has not been  
marred.  
Maintenance (continued)  
NOTE: To keep shaft from turning, hold  
impeller while unthreading impeller  
fastener.  
10. Using a clean cloth, wipe shaft and  
make certain that it is completely  
clean.  
3. Pry seal seat from impeller recess  
with a screwdriver (See Figure 1).  
11. Place adapter seal (o-ring) onto seal  
head behind flange and press  
assembly into adapter as shown in  
Figure 2.  
Do not touch or wipe  
polished face of seal  
head.  
Figure 1 – Mechanical Seal  
Replacement  
4. Remove adapter by unthreading  
adapter fasteners (Ref. No. 5) and  
fastener seals (Ref. No. 4). Press old  
seal head and adapter seal (Ref. No.  
24) out of adapter by pushing from  
engine side.  
Figure 2 – Mechanical Seal  
Replacement  
12. Secure adapter on engine mounting  
face, using fasteners and fastener  
seals. Be sure to replace gasket (Ref.  
No. 31) between engine and  
adapter, if removed during disas-  
sembly.  
5. Clean adapter and impeller seal  
recesses before installing new  
pieces.  
6. Carefully wipe polished surface of  
new seal seat with a clean cloth.  
Tighten adapter fas-  
teners evenly to  
avoid cocking or damaging adapter.  
7. Wet rubber portion of seal seat  
with a light coating of soapy water.  
8. Press seal seat squarely into recess in  
impeller. If seal seat does not press  
squarely into recess, it can be  
adjusted by pushing on it with a  
piece of pipe. Always use a piece of  
cardboard between pipe and seal  
seat to avoid scratching lapped,  
highly polished surface of seal seat  
(handle it carefully).  
13. Replace impeller and shims, ensur-  
ing that key (Ref. No. 8) is in place  
and lock impeller to shaft with fas-  
tener and impeller seal on fastener.  
14. Replace volute seal and volute with  
fasteners, ensure that check valve  
(Ref. No. 12) is in place then  
remount casing seal and pump cas-  
ing with fasteners and nuts.  
6
 
Operating Instructions and Parts Manual  
Models 020598 and 020599  
Maintenance (continued)  
IMPORTANT: Always inspect all seals  
when unit is disassembled. Replace  
when rubber is hard, cracked, or worn.  
When reassembling parts with o-ring  
seals or gaskets, it is sometimes helpful  
to apply a small amount of soapy water  
on o-ring so that parts slide over o-ring  
without pinching or shaving it.  
SHIM ADJUSTMENT  
When installing a replacement impeller  
or mechanical seal, it may be necessary  
to vary the number of shims (Ref. No.  
21) that will be required. This is easily  
done by adding one 0.010" shim more  
than was removed, and reassembling  
pump as described.  
Ensure that casing is snugly in place  
and check shaft to make sure it is turn-  
ing freely. If it turns freely, check to  
ensure that adapter (Ref. No. 3) and  
casing (Ref. No. 15) are fitted tight  
together. If they are not, tighten fas-  
teners (Ref. No. 16) and recheck shaft  
for free turning. Tighten carefully, turn-  
ing shaft while tightening. If shaft  
seizes before fasteners (Ref. No. 16) are  
completely tight, disasseble pump and  
remove one shim and repeat reassem-  
bly.  
If any time during above operation  
shaft does not turn free, follow proce-  
dure indicated above and repeat proce-  
dure.  
Above procedure ensures that pump  
will have proper running clearance (less  
than 0.010") between impeller and cas-  
ing and perform like a new unit with  
new impeller or motor.  
7
 
Operating Instructions and Parts Manual  
020598 and 020599  
Troubleshooting Chart  
Symptom  
Possible Cause(s)  
Corrective Action  
Little or no discharge  
and unit will not prime  
1. Casing not filled with  
water  
1. Fill pump casing. Using a foot-  
valve will extend pump life and  
facilitate immediate priming.  
2. Total head too high.  
2. Shorten suction lift and/or dis-  
charge head  
3. Suction head exceeds that  
for which pump is  
designed  
3. Shorten suction line and/or ver-  
tical distance from liquid to  
pump, install foot-valve and  
prime  
4. Impeller partially or com-  
pletely plugged  
4. Disassemble pump and clean out  
impeller  
5. Hole or air leak in suction  
line  
5. Repair or replace suction line  
6. Foot-valve too small  
6. Match foot-valve to piping or  
install one size larger foot-  
valve  
7. Impeller damaged  
7. Disassemble pump and replace  
impeller  
8. Foot-valve or suction line  
not submerged deep  
enough in water, pulling  
air  
8. Submerge lower in water  
9. Insufficient inlet pressure  
or suction head  
9. Increase outlet pressure by  
adding more water to tank or  
increasing back pressure by  
turning gate-valve on dis-  
charge line to partially closed  
position  
10. Suction piping too small  
11. Casing gasket leaking  
10. Increase pipe size to pump  
inlet size or larger  
11. Replace  
12. Open  
12. Suction or discharge line  
valves closed  
1. Repair or replace suction line  
Loss of suction after  
satisfactory operation  
1. Air leak in suction line  
2. Refill (reprime) pump casing  
before restarting  
2. When unit was last  
turned off, water  
syphoned out of pump  
casing  
3. Suction head exceeds that  
for which pump was  
designed  
3. Shorten suction line and/or ver-  
tical distance from liquid to  
pump, install foot-valve and  
prime  
8
 
Operating Instructions and Parts Manual  
020598 and 020599  
Troubleshooting Chart (continued)  
Symptom  
Possible Cause(s)  
Corrective Action  
Loss of suction after  
satisfactory operation  
(continued)  
4. Insufficient inlet pressure  
or suction head  
4. Increase inlet pressure by adding  
more water to tank or increasing  
back pressure by turning gate  
valve on discharge line to partial-  
ly closed position  
5. Clogged foot-valve,  
strainer or pump  
5. Unclog, clean or replace as neces-  
sary  
1. Total head lower than  
pump rating. Unit deliver-  
ing too much water  
1. Increase back pressure on pump  
by turning gate valve on dis-  
charge line to partially closed  
position that will not overload  
motor  
Pump overloads driver  
(gas engine shuts off  
before complete hose  
fill)  
2. Specific gravity and vis-  
cosity of liquid being  
pumped different than  
the pump rating  
2. Pump is designed for water, use  
only for liquids which have simi-  
lar characteristics.  
3. Check and correct, lower speed  
1. Reinforce  
3. Speed too high  
Pump vibrates and/or  
makes excessive noise  
1. Mounting plate or foun-  
dation not rigid  
enough  
2. Disassemble pump and remove  
3. Replace impeller  
2. Foreign matter in pump  
causing unbalance  
3. Impeller bent  
4. Check suction line for proper size  
and check valve in suction line if  
completely open, remove any  
sharp bends before pump and  
shorten suction line  
4. Cavitation present  
Pump runs but no fluid  
1. Replace  
1. Faulty suction piping (air  
leak)  
2. Relocate  
2. Pump located too far  
from fluid source  
3. Open  
3. Gate valve closed  
4. Clogged strainer  
5. Fouled foot-valve  
4. Clean or replace  
5. Clean or replace  
6. Lower the height  
6. Discharge height too  
great  
9
 
Operating Instructions and Parts Manual  
020598 and 020599  
Troubleshooting Chart (continued)  
Symptom  
Possible Cause(s)  
Corrective Action  
Pump Leaks at shaft  
Worn mechanical seal  
Replace  
1. Disassemble pump and remove  
stone or foreign object  
Engine will not start or  
run (or when you pull  
rope to start, it will  
not move)  
1. Stone or foreign object  
lodged in impeller  
2. Fill oil to overflowing, or check  
dipstick. See engine manual  
2. No oil in crank case  
10  
 
Operating Instructions and Parts Manual  
020598 and 020599  
For Repair Parts, contact dealer where pump was purchased.  
Please provide following information:  
-Model number  
-Serial number (if any)  
-Part description and number as shown in parts list  
1
3
33  
2
6
4
5
7
8
13  
9
4
11  
12  
10  
29  
27  
14  
15  
31  
25  
21  
24  
23  
32  
16  
22  
30  
20  
26  
27  
Figure 3 — Repair Parts Illustration  
19  
17  
18  
28  
Repair Parts List  
1
2
1
Ref.  
3 ⁄ HP B&S  
5 ⁄2HP B&S  
020599  
No.  
Description  
020598  
Qty.  
2
3
5
Slinger washer -EPDM  
Adapter  
Adapter fastener  
020631  
020632  
020633  
020631  
020632  
020633  
1
1
4
8
9
10  
Key  
Impeller  
Impeller fastener  
020634  
020635  
020637  
020634  
020636  
020637  
1
1
1
11  
13  
15  
Volute fastener  
Fill plug  
Casing  
020638  
020639  
020640  
020638  
020639  
020640  
1
1
1
17  
19  
20  
Drain plug  
Volute fastener  
Volute  
020641  
020642  
020643  
020641  
020642  
020643  
1
2
1
21  
Impeller shim set  
020644  
020644  
1
(.005", .015", .030"; one each)  
Gasket  
31  
020645  
020646  
020645  
020646  
1
33 † Seal kit -EPDM (standard)  
(*) Standard hardware item, available locally.  
(†) Includes all required seals, Ref. Nos. 2, 4, 6, 7, 12, 14, 18, 22, 23, 24, 31.  
11  
 
Operating Instructions and Parts Manual  
020598 and 020599  
Notes  
12  
 

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