Enerpac XC Series User manual

POWERFUL SOLUTIONS. GLOBAL FORCE.
Cordless Torque Wrench Pump
XC-Series
Instruction Sheet
To protect your warranty, use only ENERPAC hydraulic oil.
L4271 Rev. D 09/19 EN

2
1.0 IMPORTANT RECEIVING INSTRUCTIONS ....3
2.0 SAFETY.............................................................3
2.1 Introduction.............................................3
2.2 General Hydraulic Safety Precautions..3
2.3 Battery Operated Pump Safety
Precautions .............................................4
2.4 Bolting Pump Safety Precautions .........4
3.0 MAJOR FEATURES AND COMPONENTS......5
4.0 PRODUCT DATA...............................................6
4.1 External Dimensions ..............................6
4.2 Specifications .........................................6
4.3 Pressure and Flow Graphs.....................6
5.0 PRODUCT DESCRIPTION...............................7
5.1 Introduction.............................................7
5.2 Additional Information -
Battery and Charger...............................7
5.3 Conformance to National &
International Standards .........................7
5.4 Electromagnetic Compatibility (EMC) .7
6.0 HYDRAULIC CONNECTIONS .........................7
6.1 Connecting Hydraulic Hoses.................7
6.2 Disconnecting Hydraulic Hoses ............8
7.0 BATTERY ..........................................................8
7.1 Battery Installation .................................8
7.2 Battery Removal .....................................8
7.3 Battery Charge Indicator .......................8
7.4 Battery Current Draw Protection ..........9
7.5 Battery High Temperature Protection...9
7.6 Battery Cold Weather Operation ...........9
8.0 PREPARATION AND SETUP ...........................9
8.1 Preparing the Pump for Use ..................9
8.2 Air Removal.............................................9
8.3 Relieving Pressure..................................9
8.4 Transporting the Pump...........................9
8.5 Pendant..................................................10
8.5.1 Connecting the Pendant ...................10
8.5.2 Disconnecting the Pendant ..............10
9.0 PUMP OPERATION........................................10
9.1 Run and Sleep Modes ..........................10
9.2 Operational Modes ...............................10
9.3 Additional Functions and Features .....11
10.0 OPERATING PRECAUTIONS.......................11
11.0 AUTO-CYCLE MODE ...................................11
11.1 Pressure Adjustment -
Auto-Cycle Mode................................11
11.2 Auto-Cycle Mode -
Important Operation Information ......12
11.3 Torquing - Auto-Cycle Mode .............12
12.0 MANUAL MODE WITH PENDANT ..............12
12.1 Pressure Adjustment -
Manual Mode with Pendant ...............12
12.2 Torquing -
Manual Mode with Pendant ...............13
13.0 MANUAL MODE USING TRIGGER
SWITCH ........................................................13
13.1 Pressure Adjustment -
Manual Mode Using Trigger Switch..13
13.2 Torquing -
Manual Mode Using Trigger Switch..14
14.0 MAINTENANCE............................................14
14.1 Checking Oil Level..............................14
14.2 Hydraulic Oil Information ...................14
14.3 Adding Oil............................................14
14.4 Oil Change...........................................15
15.0 TROUBLESHOOTING ..................................15
16.0 OPERATOR FAULT CODES .........................17
17.0 QUICK REFERENCE GUIDE -
PENDANT CONTROLS ................................18
TABLE OF CONTENTS

3
1.0 IMPORTANT RECEIVING INSTRUCTIONS
Visually inspect all components for shipping damage. Shipping
damage is not covered by warranty. If shipping damage is found,
notify carrier at once. The carrier is responsible for all repair and
replacement costs resulting from damage in shipment.
2.0 SAFETY
2.1 Introduction
Read all instructions carefully. Follow all recommended safety
precautions to avoid personal injury as well as damage to the
pump and/or damage to other property. Enerpac cannot be
responsible for any damage or injury from unsafe use, lack of
maintenance or incorrect operation. Do not remove warning
labels, tags, or decals. In the event any questions or concerns
arise, contact Enerpac or a local Enerpac distributor for
clarification.
If you have never been trained on high-pressure hydraulic safety,
consult your distributor or service center for information about an
Enerpac hydraulic safety course.
This manual follows a system of safety alert symbols, signal
words and safety messages to warn the user of specific hazards.
Failure to comply with these warnings could result in death or
serious personal injury, as well as damage to the equipment or
other property.
The Safety Alert Symbol appears throughout this
manual. It is used to alert you to potential physical
injury hazards. Pay close attention to Safety Alert
Symbols and obey all safety messages that follow this symbol to
avoid the possibility of death or serious personal injury.
Safety Alert Symbols are used in conjunction with certain Signal
Words that call attention to safety messages or property damage
messages and designate a degree or level of hazard seriousness.
The Signal Words used in this manual are DANGER, WARNING,
CAUTION and NOTICE.
DANGER
Indicates a hazardous situation that, if not
avoided, will result in death or serious personal
injury.
WARNING Indicates a hazardous situation that, if not
avoided, could result in death or serious
personal injury.
CAUTION
Indicates a hazardous situation that, if not
avoided, could result in minor or moderate
personal injury.
NOTICE
Indicates information considered important,
but not hazard related (e.g. messages relating
to property damage). Please note that the
Safety Alert Symbol will not be used with this
signal word.
2.2 General Hydraulic Safety Precautions
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Property
damage could also occur.
• Do not remove or disable the pressure relief valve.
• Never set the relief valve to a higher pressure than the
maximum rated pressure of the pump.
• To avoid personal injury, keep hands and feet away from
torque wrench during operation.
• Do not handle pressurized hoses. Escaping oil under pressure
can penetrate the skin. If oil is injected under the skin, see a
doctor immediately.
• Do not pressurize disconnected couplers.
• The system operating pressure must not exceed the pressure
rating of the lowest rated component in the system.
• Do not exceed equipment ratings of 10,000 psi [700 bar].
Overloading causes equipment failure and possible personal
injury.
• Wear personal protective equipment (P.P.E.) when operating
hydraulic equipment. Always wear eye protection. Safety
equipment such as dust mask, non-skid safety shoes, hard
hat, or hearing protection used for appropriate conditions will
reduce personal injuries.
• Immediately replace worn or damaged parts with genuine
ENERPAC parts. Standard grade parts will break causing
personal injury and property damage.
CAUTION
Failure to observe and comply with the following precautions
could result in minor or moderate personal injury. Property
damage could also occur.
• Do not use or repair damaged hydraulic hose. Avoid sharp
bends and kinks when routing hydraulic hoses. Using a bent
or kinked hose will cause severe back-pressure. Sharp bends
and kinks will internally damage the hose, leading to premature
hose failure.
• Do not drop heavy objects on hose. A sharp impact may cause
internal damage to hose wire strands. Applying pressure to a
damaged hose may cause it to rupture.
• Do not lift hydraulic equipment by the hoses or swivel couplers.
Use the carrying handle or shoulder strap, if provided.
• Keep hydraulic equipment away from flames and heat.
Excessive heat will soften packings and seals, resulting in
fluid leaks. Heat also weakens hose materials. For optimum
performance, do not expose equipment to temperatures of
122˚F [50˚C] or higher. Protect all hydraulic equipment from
weld spatter
• Immediately replace worn or damaged parts with genuine
Enerpac parts. Enerpac parts are designed to fit properly and
to withstand high loads. Non-Enerpac parts may break or
cause the pump to malfunction.
NOTICE
Hydraulic equipment must only be serviced by a
qualified hydraulic technician. For repair service, contact the
Enerpac Authorized Service Center in your area.

4
2.3 Battery Operated Pump Safety Precautions
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Property
damage could also occur.
• Do not operate the pump in explosive atmospheres, such as in
the presence of flammable liquids, gases, or dust. The pump
creates sparks which may ignite the dust or fumes.
• Do not expose the pump to rain or wet conditions. Water
entering the pump will increase the risk of electric shock and
may damage the motor and other components.
• Allow sucient time for the pump to cool between operations.
To help prevent automatic motor shutdown, do not exceed the
pump's rated duty cycle of 25%.
• To avoid accidental starting, ensure that the trigger safety
lock is in the locked position and the pendant is disconnected
from the pump before transporting the pump. Do not carry the
pump with your hand or fingers on the trigger.
• Do not use the pump if the pendant controls and/or trigger
switch do not turn the pump on and o. If this malfunction
occurs, have the pump inspected and repaired before placing
it back into use.
• Remove the battery from the pump before making any
adjustments, performing maintenance or storing the pump.
Such preventative safety measures reduce the risk of starting
the pump accidentally.
• Ensure that the pendant buttons are not accidentally pressed
while installing battery.
• Ensure the trigger lock is in the locked position before installing
battery.
• Recharge battery only with the charger specified by the battery
manufacturer. A charger that is suitable for one type of battery
may create a risk of fire when used with another battery.
• Use the XC-Series cordless torque wrench pump only with
MILWAUKEE M28™ Li-Ion batteries. Use of any other batteries
may create a risk of injury and fire.
• When battery is not in use, keep it away from other metal
objects like paper clips, coins, keys, nails, screws, or other
small metal objects that can make a connection from one
terminal to another. Shorting the battery terminals together
may cause burns or a fire.
• Under abusive conditions, liquid may be ejected from the
battery. Avoid contact. If contact accidentally occurs, flush
with water. If liquid contacts eyes, additionally seek medical
help. Liquid ejected from the battery may cause irritation or
burns.
• A separate manual (published by Milwaukee Electric Tool Corp.)
is provided with the battery and battery charger. Read and
understand all information contained in this manual. Observe
and comply with all communicated safety precautions. If the
manual is lost, obtain a replacement manual before using the
battery or charger.
• The battery and battery charger do not have any serviceable
parts. Do not attempt to disassemble or repair these items.
2.4 Bolting Pump Safety Precautions
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Property
damage could also occur.
• Never attempt to connect or disconnect hoses while the pump
is on and/or the system is pressurized.
• Always be sure that the pump is stopped and all pressure is
fully relieved (0 psi/bar) before disconnecting or connecting
hydraulic hoses. The sudden and uncontrolled release of
pressurized oil could occur if hoses are disconnected while
under pressure.
• Be certain that all hose couplers are fully connected at both
the pump and wrench ends before applying any hydraulic
pressure. If the couplers are not fully connected, oil flow will
be blocked, and the drive unit could be subjected to excessive
hydraulic pressures. Catastrophic failure of wrench or pump
could result.
• Be aware that a nut or bolt that breaks o during operation of
the tool/pump may become a high velocity projectile.

5
3.0 MAJOR FEATURES AND COMPONENTS
1
2
3
4
5
6
7
8
9
10
11
12
1
13
15
1. Shoulder Strap Ring
2. Oil Fill Port
3. Oil Fill Plug
4. Trigger Switch
5. Trigger Lock
6. Pendant
7. Pendant Connector
8. Relief Valve Adjustment Knob
9. Relief Valve Locknut
10. Hydraulic Port “A” (advance)
11. Hydraulic Port “B” (retract)
12. Pressure Gauge
13. Battery Dock
14. Shoulder Strap
15. Pigtail Connector
(for pendant)
14

6
Pump Model Item Model Numbers*
Enerpac Milwaukee Electric Tool
XC1502T
Battery Charger, M28™ 115 VAC, 50/60 Hz input XC115VC 48-59-2819
Battery Charger, M28™, 230 VAC, 50/60 Hz input XC230VC C28C
Battery, M28™ Lithium-Ion, 28 Volt, 5.0 Ah XC28V5 50-11-2855
*
Batteries and chargers (sold separately) can be purchased from an Enerpac distributor or from a Milwaukee Electric Tool retailer.
Pump
Model Control Valve For Use With Cylinder or Tool Type:
Hydraulic*
Connections
Operating Temp Range Motor Rating Sound Level
˚F ˚C hp kW dBA
XC1502T Internal, Solenoid Operated Torque Wrench 1/4"-18 NPTF +14 to +122 -10 to +50 1/2 0.37 81
* Hydraulic port thread size. Enerpac Spin-On hydraulic couplers are included with pump.
4.0 PRODUCT DATA
4.2 Specifications
Note: All product data is subject to change without notice. Graphs in Section 4.3 show typical pump pressure/flow curves.
4.3 Pressure and Flow Graphs
0 2000 4000 6000 8000 10,000
20
40
60
80
100
120
140
0 140 280 420 560 700
0.33
0.66
1.00
1.33
1.66
2.00
2.33
Pressure (psi)
Flow in3/min
Pressure (bar)
Flow (l/min)
4.1 External Dimensions
Item Dimension
inch mm
A8.22 208
B11.70 297
C7.74 197
D18.32 465 A
B
C
D
Pump
Model
Maximum Hyd. Pressure Flow Rate (See Section 4.3)
Hydraulic
Oil Type
Usable Oil
Capacity*Pump Weight**
psi bar
At
No Load
At 2000 psi
[138 bar]
At 10,000 psi
[700 bar]
in³/min l/min in³/min l/min in³/min l/min in³ l lb kg
XC1502T 10,000
[+300 / -50]
700
[+20.7 / -3.4] 125 2.05 30 0.49 15 0.25 Enerpac
HF 120 2.0 26.6 12.0
* All pump models feature a rubber bladder type reservoir.
** Approximate weight of pump with oil in reservoir, and with battery not installed. Weight of battery is approximately 2.4 lb [1 kg].

7
5.0 PRODUCT DESCRIPTION
5.1 Introduction
The Enerpac XC-Series cordless torque wrench pump oers
the performance of a powered pump with the portability and
convenience of a hand operated pump. It is an ideal solution for
maintenance applications in remote areas where electrical or air
power is not available or where the presence of electrical cords
or air lines would result in trip hazards.
Designed especially for use with torque wrenches, the pump
consists of a 1/2 hp [0.37 kW] DC motor, two-stage hydraulic
pump element and a solenoid operated control valve. An
interactive pendant control allows the user to set and relieve
pressure and to operate the pump in either manual or auto-cycle
mode.
Ample oil capacity is provided by the pump's two liter [120 in³] oil
reservoir. The bladder type oil reservoir allows pump operation in
any position and helps prevent contamination.
The pump's high-strength fiberglass reinforced composite
housing provides superior durability in demanding job site
environments. An integrated carrying handle and removable
shoulder strap allow for easy portability.
Power is supplied by a rechargeable 28 volt, 5 Ah lithium-Ion
battery manufactured by Milwaukee Electric Tool Corporation.
This is the same M28™ series battery used with many 28 volt
Milwaukee Electric Tool products.
The lithium-Ion battery is capable of providing impressive run
times, even under extreme job site conditions.
5.2 Additional Information - Battery and Charger
“M28™”, “M28 REDLITHIUM™” and the Milwaukee Electric
Tool logo are trademarks and intellectual property of Milwaukee
Electric Tool Corporation.
The capitalized and italicized “MILWAUKEE” text used in
various places throughout this document denotes products
and/or components manufactured by Milwaukee Electric Tool
Corporation.
5.3 Conformance to National & International Standards
Enerpac declares that the XC-Series cordless torque wrench
pump has been tested and conforms to applicable standards and
is approved to carry the CE, TUV C and US, and FCC certification
marks. An EC Declaration of Conformity is enclosed separately
with the pump.
5.4 Electromagnetic Compatibility (EMC)
The XC-Series cordless torque wrench pump has been tested
and certified to conform to CE-EMC emission and immunity
standards and to FCC emission standards.
B
A
Pump Torque Wrench
Retract
Advance
Figure 1, Hydraulic Hose Connections
Enerpac THQ Series Torque Wrench Hoses (sold separately)
6.0 HYDRAULIC CONNECTIONS
WARNING
All hydraulic hoses and fittings used with the pump must be
rated for 10,000 psi [700] bar working pressure. Failure to
observe and comply could result in death or serious personal
injury. Property damage could also occur.
NOTICE
The pump is equipped with Enerpac Spin-On coupler
halves pre-installed in the pump ports.
6.1 Connecting Hydraulic Hoses
Make hydraulic connections to pump ports “A” and “B” as
described in the following steps. Couplers must be polarized as
shown in Figure 1 to ensure correct wrench operation.
1. To prevent the pump from starting, be sure that the battery is
removed from the pump.
2. Remove dust caps from couplers at pump ports “A” and “B”.
3. Connect the hose from the advance side of the torque
wrench to pump port “A”.
4. Connect the hose from the retract side of the torque wrench
to pump port “B”.
WARNING
Be certain that all hose couplers are fully connected at both
the pump and wrench ends before applying any hydraulic
pressure. If the couplers are not fully connected, oil flow
will be blocked, and the torque wrench drive unit could be
subjected to excessive hydraulic pressures. Oil leakage
and/or catastrophic failure of wrench or pump may occur.
Skin penetration by hydraulic oil and other serious personal
injuries could result.
NOTICE
• The Spin-on couplers used on Enerpac THQ Series torque
wrench hoses (optional accessory - sold separately) are
compatible with the Spin-on couplers pre-installed on the
pump. Use of THQ Series hoses is strongly recommended.
• At each connection, rotate the threaded collar of the female
coupler half by hand, until it is fully threaded onto the male
coupler half. Hand tighten only. Do not use tools.
• When a torque wrench is first connected to the pump, air will
be trapped in the hydraulic circuit. Refer to Section 8.2 for air
removal procedure.

8
6.2 Disconnecting Hydraulic Hoses
Disconnect hydraulic hoses after use as described in the
following steps:
1. Be sure the torque wrench is fully retracted.
2. Verify that the pressure gauge indicates zero (0) psi/bar.
Be certain that all hydraulic pressure is fully relieved before
continuing this procedure. If any pressure remains, relieve
pressure as described in Section 8.3.
3. Remove battery. Refer to Section 7.2.
4. At pump ports “A” and “B”, loosen the threaded collars on
the female couplers. Disconnect hoses from pump.
5. To prevent contamination, place dust caps over couplers.
7.0 BATTERY
The pump is powered by a rechargeable lithium-ion battery. The
pump battery dock is located at the rear of the pump housing.
NOTICE
To prevent accidental pump startup, DO NOT press
the pendant buttons during battery installation or removal
procedures. Also be sure that the trigger lock is in the locked
position as shown in Figure 8.
7.1 Battery Installation
1. Slide the battery down onto the battery dock at the rear of
the pump. See Figure 3.
2. Check that battery locks securely into place.
7.2 Battery Removal
1. Press the release buttons located on each side of the battery.
2. Slide the battery upward and remove it from the pump
battery dock.
NOTICE
To ensure compatibility and proper operation, use only
MILWAUKEE M28™ lithium-Ion batteries with the pump.
Figure 2, Battery
Figure 3, Battery Installation
7.3 Battery Charge Indicator
NOTICE
New batteries must be charged before use. Refer to
Section 7.1. Also refer to the Milwaukee Electric Tool battery and
charger manual for additional information.
Each battery contains a charge indicator consisting of four
indicator lights. The indicator lights show the approximate
run time remaining before the battery becomes completely
discharged. Press the charge indicator button to display the
lights. The lights will stay lit for two seconds. Refer to the chart in
Figure 4 to determine the level of charge.
4321
Figure 4, Battery Charge Indicator
WHEN CHARGE INDICATOR
BUTTON IS PRESSED:
PERCENT
CHARGE:
(APPROXIMATE)
LIGHTS 1, 2, 3 AND 4 ON 78 - 100%
LIGHTS 1, 2 AND 3 ON 55 - 77%
LIGHTS 1 AND 2 ON 33 - 54%
LIGHT 1 ON 10 - 32%
LIGHT 1 BLINKS 4 TIMES < 10%
LIGHT 1 BLINKS 8 TIMES 0%

9
NOTICE
• Run time between battery charges is dependent on the
application, pump run time, pressure setting and other factors.
• If none of the lights illuminate when the charge indicator button
is pressed, place the battery on the charger and charge as
needed.
• Use only a genuine Milwaukee Electric Tool charger to charge
the battery.
• Batteries and chargers (sold separately) are available from
Enerpac authorized distributors or from Milwaukee Electric
Tool retailers.
7.4 Battery Current Draw Protection
To protect the MILWAUKEE M28™ battery from damage and
extend its life, the battery’s intelligent circuit monitors both
current draw and temperature.
In extremely high torque, binding, stalling, and short circuit
situations, the battery will shut-o if the current draw becomes
too high. The charge indicator lights will blink 8 times, indicating
that battery shut-o has occurred.
To prevent battery shut-o from occurring, reduce the amount of
load on the torque wrench (if possible) or stop the pump motor.
Stopping the pump motor will reset the battery.
7.5 Battery High Temperature Protection
Under extreme circumstances, the internal temperature of the
MILWAUKEE M28™ battery can become too high, resulting in
battery shut-o.
If the charge indicator lights blink in an alternating manner when
the charge indicator button is pressed, allow time for the battery
to cool.
The battery is ready for use again if the charge indicator lights
display the remaining run time when the charge indicator button
is pressed.
7.6 Battery Cold Weather Operation
The MILWAUKEE M28™ battery is designed to operate in
temperatures below freezing. However, if the battery is very cold,
it may need to warm-up before normal use. To warm-up the
battery, install it on the pump and operate the pump with little
or no load.
NOTICE
Refer to the Milwaukee Electric Tool manual (provided
with the battery and charger) for complete battery use and care
information and charging instructions.
8.0 PREPARATION AND SETUP
8.1 Preparing the Pump for Use
1. Check all system fittings and connections to be sure they are
tight and leak free.
2. Check oil level in reservoir and add oil if necessary. Refer to
Sections 14.1 through 14.3.
3. Install pump shoulder strap.
4. Connect pendant. Refer to Section 8.5.1.
5. Charge and install battery. Refer to Section 7.1.
8.2 Air Removal
When hydraulic components are connected for the first time,
air will be trapped in the components. To ensure smooth, safe
operation, run the torque wrench through several complete
advance-retract cycles before placing the pump into service.
Do this with no load on the torque wrench and with the pump
positioned higher than the torque wrench. To allow for air venting,
remove the pump oil fill plug and O-ring before beginning this
procedure. Refer to instructions in Section 14.1.
When the torque wrench advances and retracts smoothly and
without hesitation, the air has been vented from the system. Fully
retract the torque wrench and re-install the pump oil fill plug and
O-ring after completing procedure.
8.3 Relieving Pressure
The pump automatically relieves system pressure if it has not
received any inputs from the trigger switch or pendant for 3
seconds after any retract cycle has successfully completed.
However, if for any reason system pressure becomes trapped,
pressure can be manually relieved as described in the following
procedure:
NOTICE
Battery must be installed for this procedure. Refer to
Section 7.1.
1. Be sure that battery is installed and the pump motor is o.
2. Press and hold the red pendant button.
3. While holding the red pendant button, press and hold the
green pendant button. Pressure gauge should now show
zero (0) psi/bar.
4. After the pressure gauge shows zero (0) psi/bar, release red
and green pendant buttons.
8.4 Transporting the Pump
• Before transporting the pump, always move the trigger lock
to the locked position and disconnect the pendant from the
pump. This will help prevent accidental startup of the pump
while it is being carried or moved. Refer to diagram in Figure 8
and instructions in Section 8.5.2.
• Always transport the pump using either the built-in carrying
handle or the shoulder strap.
• To prevent damage, never attempt to transport or reposition
the pump by dragging it by the hoses or the pendant cable.
• As an added precaution, always remove the battery before
transporting the pump in a vehicle or trailer, or when shipping
the pump.

10
Figure 6, Pendant Connection
3. Loosen the threaded ring securing the pendant cable to the
pump pigtail connector.
4. Disconnect the pendant cable from the pigtail connector.
See Figure 6.
9.0 PUMP OPERATION
9.1 Run and Sleep Modes
Press and release any pendant button (or install a charged
battery) to place the pump into run mode. Run mode must be
active before the pump can be operated.
• The pendant LED indicator will illuminate solid green when the
pump is in run mode, indicating that the pump is ready for use.
• The pump will enter sleep mode automatically after 5 minutes
without use. The green LED indicator will turn o when sleep
mode is activated. Sleep mode helps conserve battery power
when the pump is not being used.
• The selected pendant button must be pressed and released to
deactivate sleep mode. The pump will remain in sleep mode if
the pendant button is held down and not released.
• A small amount of power is drawn from the battery while the
pump is in sleep mode. The battery will remain charged for
approximately 2 to 4 weeks if the pump remains in sleep mode
and is not operated. However, actual battery life will vary
depending on the battery charge level and condition.
9.2 Operational Modes
The pump has three operational modes:
1. Auto-Cycle Mode (using the pendant)
2. Manual Mode (using the pendant)
3. Manual Mode (using the trigger switch)
These modes are fully described in sections 11, 12 and 13 of this
manual.
Auto-cycle mode can be operated only with the pendant. Manual
mode can be operated using either the pendant or the pump
trigger switch.
Note that the trigger switch provides limited functionality and is
intended only for temporary use in the event that the pendant
becomes lost or damaged.
8.5 Pendant
The pump includes a three-button corded pendant that operates
pump functions. It is connected to the pump with a 20 ft [6 m]
cable. A multi-color LED indicator light communicates pump
status. See Figure 5.
Pendant operation is described in detail in Sections 11
through 13 of this manual.
Figure 5, Pendant Controls
1
2
3
4
1. LED Indicator
(red, green or yellow
depending on pump
function and status)
2. Yellow Button
3. Green Button
4. Red Button
Note: Refer to Figure 11
for quick reference guide.
8.5.1 Connecting the Pendant
1. If installed, remove the battery from the pump. Refer to
Section 7.2.
2. Connect the pendant cable to the pigtail connector on the
pump shroud. See Figure 6.
3. Using the threaded ring, secure the pendant cable to the
pigtail connector.
8.5.2 Disconnecting the Pendant
1. Verify that the pressure gauge indicates zero (0) psi/bar.
Be certain that all hydraulic pressure is fully relieved before
continuing with the remaining steps of this procedure. If
any pressure remains, relieve pressure as described in
Section 8.3.
2. If installed, remove the battery from the pump. Refer to
Section 7.2.

11
11.0 AUTO-CYCLE MODE
11.1 Pressure Adjustment - Auto-Cycle Mode
WARNING
Always make pressure adjustments before putting torque
wrench on nut or bolt head. Pressure setting must be adjusted
to provide the correct torque and to ensure that excessive
torque is not applied. Failure to observe and comply with this
precaution could result in death or serious personal injury.
Property damage could also occur.
1. Ensure that the trigger lock is in the locked position. See
Figure 8.
2. Press and hold the red pendant button. See Figure 5.
3. While holding the red pendant button, press and hold the
yellow pendant button. The pendant LED indicator will blink
red twice and the pendant will vibrate twice.
NOTICE
Steps 1 and 2 reset the stored pressure to zero (0) psi/
bar if a stored pressure had been previously set.
4. Loosen the relief valve locknut and turn the relief valve
adjustment knob counterclockwise until there is a light drag
when turning. See Figure 7.
5. Press and hold the green pendant button to start pump motor.
Pendant will vibrate when pump turns on.
NOTICE
The green pendant button must be held down during
the entirety of steps 6 through 9. Releasing the green pendant
button will stop pump motor.
6. Allow pump pressure to build.
7. Turn the relief valve adjustment knob clockwise to increase
pressure to desired value.
NOTICE
To obtain an accurate setting, decrease the pressure
to a point below the final setting and then slowly increase the
pressure until it reaches the final setting.
8. Tighten the relief valve locknut when the pressure gauge
reading is stable and is at the desired pressure.
9. Release the green pendant button.
10. Recheck the final pressure setting by holding the green
pendant button and pressurizing the system.
11. If the final pressure setting is not at the desired setting, then
repeat the procedure described in steps 4 through 10. If the
final pressure setting is at the desired setting, then proceed to
step 12.
2
1
3
Figure 7, Relief Valve Adjustment
1. Pressure Gauge
2. Relief Valve Adjustment Knob
3. Relief Valve Locknut
9.3 Additional Functions and Features
• The pendant will vibrate at various times and its LED indicator
will blink to indicate pump status and to acknowledge
programming inputs.
• The pump includes an automatic motor shut-o feature.
Shut-o time after the final retract cycle will vary from 1 to 20
seconds, depending on operational mode.
• Whenever automatic shut-o occurs, or if the pump is shut-o
manually, the valve will automatically dump system pressure
to reservoir.
• To stop the pump immediately at any time before automatic
shut-o occurs: Press the red pendant button.
• To manually dump system pressure to reservoir: Press and
hold the red pendant button. Then, while continuing to hold
the red pendant button, press and hold the green pendant
button. This manual dump feature is generally needed only in
the event that the battery is removed before the auto dump
cycle is completed, or if a malfunction occurs that results in
trapped pressure.
NOTICE
A charged battery must be installed to allow operation
of the manual dump feature.
10.0 OPERATING PRECAUTIONS
WARNING
Failure to observe and comply with the following instructions
and precautions could result in death or serious personal
injury. Property damage could also occur.
• Be sure the nut threads properly engage with the threads of
the bolt, and that cross-threading has not occurred.
• Avoid making sudden start-stop movements (“shock loading”).
Failure to observe this precaution may cause a catastrophic
failure of the wrench to occur, and wrench components under
high tension could become dangerous projectiles.
• If the torque wrench stalls at any point: Release yellow pendant
button to stop auto-cycle mode. Release green pendant button
or trigger switch to stop manual mode.
• Continuously monitor the torque wrench and fastener during
pump operation. Stop torquing procedures immediately if any
problems occur.
• Refer to the manufacturer's manuals provided with the torque
wrench for wrench operation instructions, maintenance
procedures and safety precautions.
NOTICE
• Be sure that threads and the bearing surface are liberally
coated with the correct bolt lubricant or anti-seize compound.
• Be sure the nut or bolt to be fastened is clean and free of loose
dust or dirt.
• Make all torque calculations based on the bolt lubricant's (or
anti-seize compound's) stated coecient of friction. Failure to
do so may result in the required bolt load not being achieved.

12
12. Press and hold the green pendant button. When the pump
reaches the previously set pressure, press the yellow
pendant button.
13. The pendant LED indicator will turn yellow for 1.5 seconds
and the pendant will vibrate three times when the stored
pressure is recorded. The pump will shut-o.
14. Release the yellow and green pendant buttons.
NOTICE
The pump will save the stored pressure (within the
available range of 1000 to 10,000 psi [70 to 700 bar]) even after
long periods of non-use or if the battery has been replaced.
11.2 Auto-Cycle Mode - Important Operation Information
NOTICE
• To stop auto-cycle mode at any time, release the yellow
pendant button. If immediate motor shutdown is required,
press the red pendant button.
• The trigger switch cannot be used for auto-cycle operation.
• Variables such as ambient temperature, pump internal
temperature and hydraulic hose length may cause the pressure
gauge to show a slightly lower reading than the stored pressure
setting before the retract cycle is activated. This is normal.
• The internal pressure transducer and pump microprocessor
precisely control the switching between advance and retract
cycles, assuring that the stored pressure has been met.
• Auto-cycle mode will function properly only if the relief valve
pressure setting is equal to or higher than the stored pressure
setting.
• If the stored pressure is achieved before the torque wrench
fully advances, then desired torque has been achieved.
• If relief pressure is not achieved before the torque wrench fully
advances, then the desired torque has not been achieved and
further cycles are required.
11.3 Torquing - Auto-Cycle Mode
To torque in auto-cycle mode perform the following steps:
1. Place torque wrench on nut or bolt.
2. Press and hold the yellow pendant button. Pendant will
vibrate when pump turns on.
3. The pump and torque wrench will continuously perform
advance and retract cycles. The LED indicator will blink
yellow during operation. At the end of an advance cycle, the
pendant will vibrate.
NOTICE
If relief valve pressure is less than the stored pressure,
the pump will auto-dump after 10 seconds and the stored
pressure will be cleared. Then, the LED indicator will turn solid
red and the pendant will vibrate.
4. When desired torque is reached, release the yellow pendant
button.
5. After the yellow pendant button is released, the pump will do
a final retract cycle.
6. The pump will shut-o and relieve all remaining system
pressure if no additional inputs from the trigger switch or
pendant are received within the applicable time period
after full retract. Refer to the following notice statement for
additional information.
NOTICE
• If relief valve pressure is set > 2000 psi [138 bar], the pump
will automatically shut-o 1 second after full retract when
the yellow pendant button is released. If the button remains
depressed, the pump will cycle to advance after a 1 second
delay.
• If relief valve pressure is set < 2000 psi [138 bar], the pump
will automatically shut-o 20 seconds after full retract when
the yellow pendant button is released. If the button remains
depressed, the pump will cycle to advance after a 5 second
delay.
• Pressing the red button will turn o the pump immediately.
12.0 MANUAL MODE WITH PENDANT
12.1 Pressure Adjustment - Manual Mode with Pendant
WARNING
Always make pressure adjustments before putting torque
wrench on nut or bolt head. Pressure setting must be adjusted
to provide the correct torque and to ensure that excessive
torque is not applied. Failure to observe and comply with this
precaution could result in death or serious personal injury.
Property damage could also occur.
1. Ensure that the trigger lock is in the locked position. See
Figure 8.
2. Press and hold the red pendant button. See Figure 5.
3. While holding the red pendant button, press and hold the
yellow pendant button. The pendant LED indicator will blink
red twice and the pendant will vibrate twice.
NOTICE
Steps 1 and 2 reset the stored pressure to zero (0) psi/
bar if a stored pressure had been previously set.
4. Loosen the relief valve locknut and turn the relief valve
adjustment knob counterclockwise until there is a light drag
when turning. See Figure 7.
5. Press and hold the green pendant button to start pump motor.
Pendant will vibrate when pump turns on.
NOTICE
The green pendant button must be held down during
the entirety of steps 6 through 9. Releasing the green pendant
button will stop pump motor.
6. Allow pump pressure to build.
7. Turn the relief valve adjustment knob clockwise to increase
pressure to desired value.
NOTICE
To obtain an accurate setting, decrease the pressure
to a point below the final setting and then slowly increase the
pressure until it reaches the final setting.
8. Tighten the relief valve locknut when the pressure gauge
reading is stable and is at the desired pressure.
9. Release the green pendant button.
10. Recheck the final pressure setting by holding the green
pendant button and pressurizing the system.
11. If the final pressure setting is not at the desired setting, then
repeat the procedure described in steps 4 through 10. If the
final pressure setting is at the desired setting, then proceed to
step 12.
12. Press and hold the green pendant button. When the pump
reaches the previously set pressure, press the yellow pendant
button.
13. The pendant LED indicator will turn yellow for 1.5 seconds
and the pendant will vibrate three times when the stored
pressure is recorded. The pump will shut-o.
14. Release the yellow and green pendant buttons.
NOTICE
The pump will save the stored pressure (within the
available range of 1000 to 10,000 psi [70 to 700 bar]) even after
long periods of non-use or if the battery has been replaced.

13
12.2 Torquing - Manual Mode with Pendant
1. Place torque wrench on nut or bolt.
2. Press and hold the green pendant button to begin an
advance cycle. Pendant will vibrate when pump turns on.
The LED indicator will blink green until the stored pressure
is achieved. The LED indicator will then blink yellow and the
pendant will vibrate until the green button is released.
NOTICE
• If the stored pressure was reset to zero and a new setting was
not entered, the pump will continue to build pressure until
the relief valve setting (Section 12.1 step 8) is reached. The
user will NOT see the yellow LED indicator or feel the pendant
vibrate.
• If stored pressure exists and pump is run in manual mode,
then:
- Pendant LED indicator light blinks green if pressure is below
stored pressure value.
- Pendant LED indicator light blinks yellow if pressure is equal
to stored pressure value.
- Pendant LED indicator light blinks red if pressure is above
stored pressure value.
• If the actual pressure exceeds the stored pressure, the LED
indicator will blink red. This indicates that the actual pressure
is set higher than the stored pressure.
• If the stored pressure is achieved before the torque wrench
fully advances, then desired torque has been achieved.
3. Release green pendant button to start a retract cycle. The
pendant will vibrate to indicate the start of the cycle.
4. Repeat steps 2 and 3 until target torque is achieved.
5. The pump will shut-o and relieve all remaining system
pressure if no additional inputs from the trigger switch or
pendant are received within the applicable time period
after full retract. Refer to the following notice statement for
additional information.
NOTICE
• If relief valve pressure is set > 2000 psi [138 bar], the pump will
automatically turn o 1 second after full retract.
• If relief valve pressure is set < 2000 psi [138 bar], the pump will
automatically shut-o 20 seconds after full retract.
• Pressing the red button will shut-o the pump immediately.
13.0 MANUAL MODE USING TRIGGER SWITCH
The trigger switch can be used to provide temporary use of the
pump if the remote pendant is missing or not operational. Note
that the auto-cycle mode is NOT functional when the trigger
switch is used. Use of the remote pendant is required for auto-
cycle operation and special features.
13.1 Pressure Adjustment - Manual Mode Using Trigger
Switch
WARNING
Always make pressure adjustments before putting torque
wrench on nut or bolt head. Pressure setting must be adjusted
to provide the correct torque and to ensure that excessive
torque is not applied. Failure to observe and comply with this
precaution could result in death or serious personal injury.
Property damage could also occur.
1. Disengage the trigger lock by sliding the trigger lock control
to the right, so it is closest to the unlocked icon. See
Figure 8.
2. Loosen the relief valve locknut and turn the relief valve
adjustment knob counterclockwise until there is a light drag
when turning. Refer to Figure 7.
3. Start the pump motor and allow pressure to build by firmly
grasping the carrying handle and pulling the trigger switch
upward. Refer to Figure 9.
NOTICE
Releasing the trigger switch will stop pump motor.
Trigger switch must be held down during the entirety of steps 4
through 6.
4. Turn the relief valve adjustment knob clockwise to increase
pressure to desired value.
NOTICE
To obtain an accurate setting, decrease the pressure
to a point below the final setting and then slowly increase the
pressure until it reaches the final setting.
1
2
Figure 8, Trigger Lock
1. Locked Position
2. Unlocked Position
Figure 9, Trigger Switch
OFF
ON

14
5. Tighten the relief valve locknut when the pressure gauge
reading is stable and is at the desired pressure, then release
the trigger switch.
6. Recheck the final pressure setting by holding the trigger
switch and pressurizing the system.
7. If the final pressure setting is not at the desired setting, then
repeat the procedure described in steps 2 through 6.
13.2 Torquing - Manual Mode Using Trigger Switch
NOTICE
• Pressure will increase until the relief pressure setting is reached.
• If relief pressure is achieved before the torque wrench fully
advances, then desired torque has been achieved.
• If pendant remains connected, blinking green LED will be visible
(same as manual mode operation with pendant). However, red
and yellow LED's will NOT be visible.
1. Place torque wrench on nut or bolt.
2. Press and hold the trigger switch to begin an advance cycle.
Pump will continue to build pressure until pressure in Section
13.1, step 6 is reached.
3. Release trigger switch to start a retract cycle.
4. Repeat steps 2 and 3 until target torque is achieved.
5. The pump will shut-o and relieve all remaining system
pressure if no additional inputs from the trigger switch (or
pendant - if connected) are received within the applicable
time period after full retract. Refer to the following notice
statement for additional information.
NOTICE
• If relief valve pressure is set > 2000 psi [138 bar], the pump will
automatically shut-o 1 second after full retract.
• If relief valve pressure is set < 2000 psi [138 bar], the pump will
automatically shut-o 20 seconds after full retract.
14.0 MAINTENANCE
14.1 Checking Oil Level
1. Be sure torque wrench is fully retracted and that pump is o.
2. Verify that the pressure gauge indicates zero (0) psi/bar.
Be certain that all hydraulic pressure is fully relieved before
continuing this procedure. If any pressure remains, relieve
pressure as described in Section 8.3.
3. Remove the battery from the pump. Refer to Section 7.2.
4. Place the pump on a level surface.
5. Remove the oil fill plug and O-ring from the fill opening. Use
a 7/8" Allen wrench. Be sure that the O-ring is removed with
the oil fill plug. See Figure 10.
6. Visually check the oil level. Reservoir is FULL when oil level
is at the top of the oil fill tube.
• If oil level is OK (reservoir full), then proceed to Step 7.
• If oil level is low, then add oil as described in Section 14.3.
Refer to Section 14.2 for oil requirements.
7. Reinstall O-ring and oil fill plug. Oil fill plug is must be installed
so that top of oil fill plug is recessed below the flange around
the fill opening. Torque to 40-50 in-lbs [4.5-5.7 Nm].
14.2 Hydraulic Oil Information
Use only Enerpac HF hydraulic oil when adding additional oil
or when performing an oil change. Enerpac HF hydraulic oil is
available from Enerpac distributors and Enerpac authorized
service centers.
1
2
3
Figure 10, Oil Fill Plug
1. Oil Fill Plug
2. O-ring
3. Oil Fill Port
14.3 Adding Oil
CAUTION Be certain that the torque wrench is fully
retracted before adding any oil to the reservoir. If an oil-
filled torque wrench is retracted after additional oil has been
added to the reservoir, the reservoir could become overfilled
and burst. Minor or moderate personal injury and/or property
damage could occur.
NOTICE
• Use only Enerpac HF hydraulic oil. Refer to Section 14.2.
• To avoid spillage and to allow proper venting, always use a
funnel of the proper size when adding oil. Spillage will occur if
a funnel is not used.
• Use only new oil poured from a clean container.
• Always remove the battery from the pump before adding oil.
This will prevent accidental pump start-up and will also prevent
any spilled oil from contacting the battery during filling.
• Pour oil slowly to avoid spillage. If oil begins to flow from the
concentric vent openings around the oil fill opening, stop
pouring immediately to avoid spillage.
• Remove and dispose of any spilled oil in accordance with all
applicable laws and regulations.
Add oil as described in the following steps:
1. Be sure torque wrench is fully retracted and that pump is o.
2. Verify that the pressure gauge indicates zero (0) psi/bar.
Be certain that all hydraulic pressure is fully relieved before
continuing this procedure. If any pressure remains, relieve
pressure as described in Section 8.3.
3. Remove the battery from the pump. Refer to Section 7.2.
4. Remove the oil fill plug and O-ring from the fill opening. Use
a 7/8" Allen wrench. Be sure that the O-ring is removed with
the plug.
5. Place a funnel (maximum 1/2" [12 mm] stem diameter)
through the fill opening and into the oil fill tube. Be sure the
concentric vent openings around the fill opening are not
plugged with dirt. Venting will occur through these openings
as oil is added in step 6.

15
6. SLOWLY add Enerpac oil while watching the oil level through
the funnel stem. To avoid spillage, stop pouring immediately
when oil level reaches the top of the oil fill tube.
7. Remove funnel from oil fill opening.
8. Reinstall O-ring and oil fill plug. Be sure fill plug is fully
installed. Torque to 40-50 in-lbs [4.5-5.7 Nm].
14.4 Oil Change
Change the hydraulic oil in the pump reservoir at least once
a year, or whenever it is suspected that the oil has become
contaminated.
The pump contains a rubber bladder style reservoir. To properly
drain and refill the reservoir, perform the following procedure:
1. Be sure torque wrench is fully retracted and that pump is o.
2. Verify that the pressure gauge indicates zero (0) psi/bar.
Be certain that all hydraulic pressure is fully relieved before
continuing this procedure. If any pressure remains, relieve
pressure as described in Section 8.3.
3. Move the trigger lock to the locked position. See Figure 8.
4. Disconnect hoses from ports “A” and “B” of pump.
5. Attach an open-ended hose to the pump “A” port. Place the
open end of the hose in a suitable pan or container that is
large enough to collect all the used oil.
NOTICE
Usable oil capacity of the pump reservoir is 120 in³
[2 l]. Be sure the pan or container is large enough to hold all the
drained oil.
6. To prevent dirt entry, seal the pump “B” port with a metal
plug or closed coupler.
7. Be sure that oil fill plug is fully installed in the pump oil fill
opening. It will be removed later, but must remain installed
at this time.
8. Move the trigger lock to the unlocked position. See Figure 8.
9. Pull the trigger switch upward to start the pump motor.
Continue running the motor until oil stops flowing from the
open-ended hose. Then, release the trigger switch. See
Figure 9.
10. Remove the battery from the pump. Refer to Section 7.2.
11. Remove the open-ended hose from the pump “A” port. To
prevent dirt entry, seal the “A” port with a metal plug or
closed coupler.
12. Slowly fill the reservoir with new Enerpac oil. Refer to Section
14.2 for hydraulic oil requirements and Section 14.3 for
detailed oil fill instructions. Usable oil capacity will be slightly
less than the rated reservoir size for your pump model.
13. After adding oil, reconnect the torque wrench and reinstall
the battery. Refer to Section 7.1.
14. Remove trapped air from the system. Refer to Section 8.2 for
additional information.
15. Check oil level again after cycling the torque wrench. With
the torque wrench fully retracted, verify that oil level has not
dropped. Add additional oil if level is low. Refer to Sections
14.1 through 14.3.
15.0 TROUBLESHOOTING
The information in the Troubleshooting Guide is intended as an
aid to help diagnose and correct various possible problems that
may occur. Refer to Table 2.
For repair service, contact your nearest Enerpac Authorized
Service Center. Only an Enerpac Authorized Service Center
should be permitted to service the pump and its components.
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Property
damage could also occur.
• Never tighten or loosen hydraulic fittings while the pump
hydraulic system or connected components are pressurized.
Escaping oil under pressure can penetrate the skin, causing
serious personal injury.
• Keep hands, fingers and other body parts clear of pinch
points and moving parts when observing operation during
troubleshooting.
• To prevent accidental start-up of pump during servicing,
always remove battery from pump before performing any
maintenance or repair procedures.

16
Table 1 - Troubleshooting Guide
Symptom Possible Cause Action
1. Pump will not start. a. Battery not installed. Install battery.
b. Electrical contacts dirty or corroded. Clean contacts on the battery, pump and charger.
c. Battery discharged. Charge battery.
d. Battery shut-o. Refer to Milwaukee Electric Tool battery/charger
instruction manual.
e. Trigger lock engaged. Move trigger lock to the unlocked position.
f. Trigger lock stuck in the locked
position.
Contact Enerpac Authorized Service center if trigger
lock will not move into the unlocked position.
g. Motor damaged. Contact Enerpac Authorized Service Center.
2. Pump clicks when
trigger switch is pulled,
but does not start.
a. Electrical contacts dirty or corroded. Clean contacts on the battery, pump and charger.
b. Battery discharged. Charge battery.
c. Battery too cool or too warm. Allow the battery temperature to return to operating
range. Refer to Milwaukee Electric Tool battery/charger
instruction manual.
d. Battery damaged or not functioning. Replace battery.
e. Pump jammed due to obstruction or
possible internal damage to pump.
Contact Enerpac Authorized Service Center.
3. Pump slows down and
stops.
Battery discharged. Charge battery.
4. Low fluid output. a. Pump needs priming. To prime the pump, be sure that the pump reservoir is
filled with oil. Then, run the pump with the control valve
in the neutral position while gently rocking the pump
from side-to-side.
b. Bypass valve malfunction. Contact Enerpac Authorized Service Center.
c. Oil intake screen clogged with debris. Contact Enerpac Authorized Service Center.
d. Internal damage to pump. Contact Enerpac Authorized Service Center.
5. Torque wrench will not
advance or retract.
a. Oil level low. Add oil until reservoir is completely full.
b. Pump needs priming. To prime the pump, be sure that the pump reservoir is
filled with oil. Then, run the pump with the control valve
in the neutral position while gently rocking the pump
from side-to-side.
c. Oil intake screen clogged with debris. Contact Enerpac Authorized Service Center.
d. Loose hydraulic couplers. Check couplers and tighten if needed.
6. Torque wrench
advances and retracts
erratically.
a. Air in the system. Advance and retract the torque wrench until operation is
smooth Refer to Section 8.2.
b. External hydraulic leak. Tighten connections. Replace damaged components.
c. Internal leakage in valve. Contact Enerpac Authorized Service Center.
d. Internal damage to valve. Contact Enerpac Authorized Service Center.
e. Internal damage to pump. Contact Enerpac Authorized Service Center.
7. Pump pulses and/or
stops during prolonged
or heavy operation.
Excessive current draw. Immediately release the trigger to prevent battery
from shutting o. Allow time for battery to cool before
restarting pump.
NOTICE
If battery shuts o, place battery on charger
to reset.
8. Pump does not build
pressure.
Relief valve pressure is set too low. Adjust relief valve pressure. Refer to Section 11.1, 12.1
or 13.1 (as applicable).
(continued on the next page)

17
16.0 OPERATOR FAULT CODES
Operator fault codes are displayed by the pendant LED indicator.
See Figure 5.
Refer to Table 2 for operator fault code information.
Table 2 - Operator Fault Codes
LED Indicator Blink and Color Cause Action
LED indicator blinks RED.
Pendant vibrates 5 times.
Button/Pendant Fault Remove and reinstall battery while ensuring that
no pendant buttons are being pressed. If problem
persists, contact Enerpac Authorized Service
Center.
LED indicator blinks RED and YELLOW.
Pendant vibrates 5 times.
Over Temperature Allow time for pump temperature to cool.
LED indicator blinks YELLOW.
Pendant vibrates 5 times.
Low Voltage Refer to “Pump will not start” or “Pump slows
down and stops” in Troubleshooting Guide.
LED indicator blinks RED four times and
then pauses for one second.
Pendant vibrates 5 times.
Mechanical or Electrical Failure Contact Enerpac Authorized Service Center.
Table 1 - Troubleshooting Guide (Continued)
Symptom Possible Cause Action
9. Noisy pump operation. a. Pump element piston sticking. Contact Enerpac Authorized Service Center.
b. Motor or gear damaged. Contact Enerpac Authorized Service Center.
10. Pump builds pressure,
but does not reach
recorded pressure.
Stored pressure is higher than user
adjustable relief pressure.
Correct relief pressure and reset stored pressure. Refer
to Section 11.1 or 12.1 (as applicable).
11. Pump retract timer is
extended (20 seconds)
and the relief pressure
is above 2,000 psi
[138 bar].
Faulty or damaged pressure
transducer.
Contact Enerpac Authorized Service Center.
12. Auto-cycle function
is disabled and/or
pendant will not accept
a pressure setting.
a. Relief valve pressure setting is below
1000 psi [70 bar].
Adjust relief valve pressure to 1000 psi [70 bar]
or above. Auto-cycle operating pressure range is
1000 to 10,000 psi [70 to 700 bar].
b. Faulty or damaged pressure
transducer.
Contact Enerpac Authorized Service Center.
13. LED indicator shows
mechanical or electrical
failure fault (see
Section 16.0) when
battery is connected to
pump then changes to
solid green after
10 seconds.
Faulty or damaged pressure
transducer.
Contact Enerpac Authorized Service Center.

18
17.0 QUICK REFERENCE GUIDE - PENDANT CONTROLS
• Refer to Figure 11 for pendant quick reference guide.
• For some functions, two pendant buttons must be pushed simultaneously and/or in a sequence. Refer to sections 11.0 and 12.0
of this manual for detailed instructions.
• A charged battery must be installed on pump. Pendant buttons are not functional when battery is removed or discharged.
Activate
Manual
Mode
Stop Pump
Motor
Activate
Auto-cycle
Mode
Set Stored
Pressure
Manual Pressure
Relief
Clear
Stored
Pressure
Figure 11, Quick Reference Guide - Pendant Controls

Notes:
19

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