Enerpac E Series Instruction Sheet
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Enerpac E Series Instruction Sheet

Electric dump and hold pump
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L4351
Rev. B
To protect your warranty, use only ENERPAC hydraulic oil.
Models:
• EP3304SB
• EP3304SI
• EP3304SE
For use with single-acting
hydraulic cylinders and
tools.
07/19
Instruction Sheet
E-Series
Electric Dump and Hold Pump

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Summary of Contents for Enerpac E Series

  • Page 1 Instruction Sheet E-Series Electric Dump and Hold Pump L4351 Rev. B 07/19 To protect your warranty, use only ENERPAC hydraulic oil. Models: • EP3304SB • EP3304SI • EP3304SE For use with single-acting hydraulic cylinders and tools.

  • Page 2: Table Of Contents

    Table of Contents: 1.0 SAFETY .............3 6.3 Pendant ..........10 1.1 Important Safety Instructions ....3 6.4 Solenoid Operated Control Valve ..11 1.2 General Hydraulic Safety Precautions ..3 6.5 Variable Speed Control ......11 1.3 Electrical Safety ........4 6.6 Constant Speed and Constant Power Modes ............11 1.4 Additional Precautions ......5 7.0 OPERATION ............12...

  • Page 3: Safety

    In addition, the load may slip or fall. If training is needed, contact your local Enerpac distributor or • The system operating pressure must not exceed the pressure authorized service center for information about an Enerpac rating of the lowest rated component in the system.

  • Page 4: Electrical Safety

    Return the pump to the nearest Enerpac electrician. After the reconnection, the pump should comply authorized service center for examination, repair, or electrical with all local codes and ordinances.

  • Page 5: Additional Precautions

    Outdoor Appliances.” affixed to the pump. If worn or missing, obtain replacements from 1.4 Additional Precautions Enerpac. Refer to Figure 1 for locations WARNING Do not use electric pumps in an explosive atmosphere. Sparks and electrical arcing could ignite combustible vapors or airborne dust CAUTION Check electrical power requirements on pump data plate.

  • Page 6: Product Data

    Advance / Hold / Retract hydraulic cylinders 3/8" NPTF 40.1 18.2 Enerpac HF (solenoid-operated dump) and tools Approximate weight of pump including oil. Approximate usable oil capacity of pump hydraulic reservoir. Pump total oil capacity (including reservoir and pump element housing) is approximately 1.14 gallons [4.33 liters].

  • Page 7: Pump Performance Curves

    2.3 Pump Performance Curves Model EP3304SB (IMPERIAL) (METRIC) 120V FLOW . PRESSURE 120V FLOW . PRESSURE 2000 2000 4000 4000 6000 6000 8000 8000 10,000 10,000 Pressure (bar) ▶ Pressure (psi) ▶ 100% of rated output 100% of rated output 50% of rated output 50% of rated output 25% of rated output...

  • Page 8: Major Features And Components

    3.0 MAJOR FEATURES AND COMPONENTS Key: 1. Pendant and Cable 2. Carrying Handle and Pendant Cable Storage 3. Cover Plate 4. Control Valve Manual Override 5. Hyd. Reservoir Air Breather and Filter 6. Hyd. Reservoir Oil Drain/Fill Plug 7. Oil Level indicator 8.

  • Page 9: Product Description

    In addition, a small amount of hydraulic oil may leak from the reservoir air breather (covered by a removable The Enerpac E-Series electric dump and hold pump is designed absorbent pad) during shipping. A minimal amount of oil inside...

  • Page 10: Hydraulic Reservoir

    AC For most shipping destinations, the hydraulic reservoir is pre- power cord or pendant cable. filled at the factory with Enerpac HF hydraulic oil. However, as a precaution, always check the oil level before 6.2 Ventilation System starting the pump.

  • Page 11: Solenoid Operated Control Valve

    • The control valve does not contain a venturi valve. Flow control devices (user-supplied) must be installed in the system if flow metering is desired. • The pump is equipped with a hold holding feature but contains no safety locking valve. After lifting, the load must be supported by suitable mechanical load holding devices.

  • Page 12: Operation

    7.0 OPERATION 7.1 Before Start-up Check the hydraulic oil level. Add oil if necessary. Refer to Sections 10.1 through 10.3. Connect hydraulic hose to pump as described in Section 5.2. Connect pump to a compatible AC power supply of the proper voltage.

  • Page 13: Pump Operation

    If the pump does not relieve hydraulic pressure when functions. the dump button is pressed and held (with AC power connected), discontinue use and take the pump to an Enerpac Authorized • Additional flow control devices (optional accessories - refer to Service Center for diagnosis and repair.

  • Page 14: Hydraulic System Maintenance

    Figure 9, Pressure Gauge Installation NOTICE • Use of oils other than Enerpac HF may result in damage to pump hydraulic components and will void the Enerpac product warranty. Enerpac recommends using only Enerpac HF oil in the E-Series pumps.

  • Page 15: Adding Oil

    10.3 Adding Oil Funnel Be sure that hydraulic cylinder or tool is fully retracted. (user-supplied) Be certain that pump is off and that all hydraulic pressure is fully relieved. Refer to Section 8.0 for additional information. 1/4" - 1/2" Dia. Disconnect pump AC power cord from electrical outlet.

  • Page 16: Oil Change

    If the control valve will not operate electrically via the pendant Such damage is not covered under warranty. controls, take the pump to an Enerpac service center for • Remove and dispose of used hydraulic oil in accordance with diagnosis and repair.

  • Page 17: Troubleshooting

    Failure to observe and comply with the following precautions could result in death or serious personal injury. Property For repair service, contact your nearest Enerpac Authorized damage could also occur. Service Center. Only an Enerpac Authorized Service Center should be permitted to service the pump and its components.
  • Page 18 Pump needs priming. Refer to Section 10.5 for priming procedure. e. Pump bypass valve malfunction. Contact Enerpac Authorized Service Center. f. Pump oil intake suction filter is dirty. Contact Enerpac Authorized Service Center. g. Pump internal leakage. Contact Enerpac Authorized Service Center.
  • Page 19 Avoid setting relief valve at the pump bypass bypass valve setting. setting of 3000 psi [207 bar] whenever possible d. Damaged and/or loose components Contact Enerpac Authorized Service Center. inside pump, vibrating and/or making contact. e. Pump elements worn or damaged.

  • Page 20: Pump Fault Codes (User-Level)

    AC power cord is connected to start pump again. outlet. • If problem persists, contact BUTTON FAULT 1 red blink followed by a Enerpac Authorized Service 1 second pause. Sequence Center. repeats until problem is corrected. Check pendant and pendant cable for obvious signs of damage or wear.
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  • Page 24 http://www.enerpac.com...

This manual is also suitable for:

Ep3304sbEp3304siEp3304se

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