Performance Characteristics - Hydroworks 8725939 Manuel D'instructions

HI-LOW HYDRAULIC GEAR PUMPS

Performance Characteristics

8725939
Minimal Displ. 1 st stage 0.521
(cu.in./rev.) 2 nd stage 0.188
Total 0.709
GPM＠ 1 st stage 8.12
3600RPM 2 nd stage 2.93
Total 11.05
Max. Pressure 1 st stage 900
(PSI) 2 nd stage 3000
6-1/2 HP
Min. HP ＠3000 PSI (3600RPM)
When Outlet port pressure is under 650 PSI, Both stages are working and total displacement
applies. Above 650 PSI, Only 2 nd stage displacement applies
WARNING
DISCONNECT POWER AND RELEASE ALL SYSTEM PRESSURE BEFORE SERVICING
THIS EQUIPEMENT
1. Follow all local electrical and safety codes, as well as the National Electrical Code (NEC) and the
Occupational Safety and Health Act (OSHA)
2. Never exceed the maximum operating speed or pressure.
3. When using AC motors, ground the motor properly by wiring with a grounded, metal-clad
raceway system, using a separate ground wire connected to bare metal of the motor frame, or
other suitable means.
4. Guard all moving parts.
WARNING
RELEASE SYSTEM PRESSURE BEFORE SERVICING THIS EQUIPMENT.
5. Drain all liquids from the system before servicing.
6. Check hoses and connections for security before servicing.
7. Periodically check the pump and system components.
8. Provide a means of pressure relief for pumps whose discharge line can be shut off or obstructed.
9. Wear safety glasses at all times when working with pump.
10 Keep work area clean, uncluttered and properly lighted; replace all unused tools.
11. Keep visitors at a safe distance from the works area.
12. Make the workshop child-proof with padlocks, master switches, and by removing start keys.
13. Do not operate an engine in an enclosed area.
14. Do not spill gasoline on hot engine surfaces
15. Store gasoline only in an approved container.
16. Keep dirty and oily cleaning rags in a tightly closed metal container.
17. Check engine oil level before operating the engine.
18. Familiarize yourself with the controls and emergency shutdown procedures.
19. Never operate the equipment when you are fatigued.
20. All system components pressure ratings should be greater than maximum system pressure.
21. Put safety guards on all moving parts.
22. Keep all guards in place.
INSTRUCTION MANUAL
MODEL
8725947
0.761
0.214
0.975
11.86
3.34
15.20
900
3000
9 HP
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HI-LOW HYDRAULIC GEAR PUMPS
Installation
CAUTION
Do not overtighten fittings and bolts-this can damage the pump
1. Assemble one coupling half to the engine/ motor and tighten the set screw.
2. Assemble the other coupling half loosely to the pump shaft.
Note: Drive key dimensions in Specification section of this manual.
CAUTION
Do not force coupling onto pump shaft. A snap ring inside pump may be damaged by forcing
coupling.
3. Insert the rubber spider into engine/motor coupling half.
4. Bolt the pump loosely to 4-bolt footmounted pump adaptor.
5. Align the shafts to make sure they are on center with each other.
CAUTION
Misalignment with shafts may result in premature shaft seal failure.
6. Tighten the mounting bolts.
7. Mate the coupling halves together, allowing 1/16'' gap between halves.
8. Check the alignment again.
CAUTION
The gap in the coupling halves is to prevent end loading of the pump shaft.
9. Tighten the setscrew in the mating coupling halves.
10. Remove plastic shipping plugs from the inlet and outlet ports.
11. Squirt clean oil into pump for pre-lubrication and start-up.
12. Turn shaft coupling slowly to ensure proper shaft alignment and coupling installation.
13. Connect inlet line by slipping inlet hose over inlet tube and fasten with hose clamp.
NOTE: A few drops of oil on intlet tube beaded section will help ease the installation.
14. Keep inlet hose short and of adequate size to avoid pump cavitation.
NOTE: Cavitation is recognized by excessive pump noise.
CAUTION
Provide cooling for the hydraulic oil based on: duty cycle, pressure/flow, ambient
temperature, oil and component maximum temperature specifications, and reservoir capacity.
15. Use a 1/2〞NPT, high pressure fitting for the outlet port.
Use a good quality pipe joint compound (pipe dope) on all NPT Hydraulic fittings.
CAUTION
Flush all lines to ensure contaminants have been removed.
CAUTION
Do not use thread tape on NPT hydraulic fittings.
CAUTION
Do not overtighten NPT pressure fitting in pump. This could distort or crack the pump gear
housing.
16. At initial start-up, turn the drive shaft several times by hand to prime.
17. Bleed all air from the system to prevent erratic operation.
18. After several cycles, check the reservoir oil level and refill as necessary.
INSTRUCTION MANUAL
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