Enerpac EWCH90 User manual

1
1.0 SAFETY
1.1 Introduction
Read all instructions carefully. Follow all recommended
safety precautions to avoid personal injury as well
as damage to the product 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
tool 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.
NOTICE:
DANGER Indicates a hazardous situation that,
if not avoided, will result in death or
serious personal injury
NOTICE:
WARNING
Indicates a hazardous situation that,
if not avoided, could result in death
or serious personal injury.
NOTICE:
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.
1.2 Hydraulic Cutter Safety Precautions
NOTICE:
WARNING
Failure to observe and comply with the
following precautions and instructions may result in
death or serious personal injury. Property damage
could also occur.
• Read and completely understand the safety
precautions and instructions in this manual. Always
follow all safety precautions and instructions,
including those that are contained within the
procedures of this manual.
• Read this manual before operating the cutter, or
before performing any adjustments, inspections,
maintenance or repairs.
• Follow all instructions and heed all precautions
stated in this manual.
• Keep this manual for future reference in a place that
is accessible to all persons operating or servicing the
cutter.
POWERFUL SOLUTIONS. GLOBAL FORCE.
Instruction Sheet
Cable Cutter
Model EWCH90, EWCH140
INDEX
1.0 SAFETY .............................1
2.0 PRODUCT DATA ......................5
3.0 CONFORMANCE TO NATIONAL AND
INTERNATIONAL STANDARDS ...........8
4.0 DESCRIPTION ........................8
5.0 RECEIVING INSTRUCTIONS .............8
6.0 SET-UP .............................8
7.0 CUTTING HEAD .....................10
8.0 CUTTER OPERATION .................11
9.0 MAINTENANCE ......................14
10.0 STORAGE .........................17
11.0 TROUBLESHOOTING ................18
L4306 Rev. C 10/19 EN
EWCH90
EWCH140

2
• Place the tool horizontally on a substantial work
surface. The work surface must have a rated weight
capacity that exceeds the weight of the cutter and of
the material being cut.
• Fragments and splinters may be ejected from the
cutter during normal use. The end of the material
being cut may become a projectile as it separates
during cutting. Stay clear of the cutting head and
surrounding area during operation. Always wear face
and eye protection.
• As needed, remove any foreign objects from the
cutting head that could damage the cutter and/
or injure the operator. Before removing any foreign
objects, always stop the pump, relieve hydraulic
pressure and disconnect pump from AC power
supply.
• Avoid touching the cutter's metal surfaces during
operation and after the cutter has been in use. Be
aware of the risk of burns if the cutter becomes hot.
• Do not use the cutter for activities other than those
it was approved and designed to perform. Refer to
Section 8.1 of this manual for additional information
regarding foreseen use.
• Use the cutter lifting eye (if equipped) and appropriately
rated lifting equipment if it is necessary to lift or suspend
the tool by mechanical means.
• Do not exceed equipment ratings. Never attempt to
cut an item that is above the maximum allowable
diameter for your cutter model. Refer to the chart in
Section 2.1 of this manual. Overloading may cause
equipment failure and possible personal injury.
• Do not use the cutter in explosive atmospheres
(for example, in the presence of flammable liquids,
gasses or powders).
• Do not use the cutter on live electric lines, on
pressure vessels or ducts, or on vessels containing
corrosive and/or toxic substances.
• If the cutter malfunctions, stop use immediately.
Check for misaligned or jammed moving parts,
broken components and any other condition that
could make the tool operate incorrectly. Place the
cutter back into operation only after the fault has
been identified and the identified repairs and/or
adjustments have been performed.
• Ensure that any repairs are performed only by
trained, qualified and authorized sta using original
equipment replacement parts. For repair service,
contact the Enerpac authorized service center in
your area.
• Use only original equipment Enerpac parts. Enerpac
parts are designed to fit properly and to withstand
high loads. Non-Enerpac parts may break or cause
the product to malfunction.
• Keep cutting tools clean and replace blades when
they become dull. Suitably maintained cutting tools
with sharp edges are less likely to jam and are easier
to control.
• Always perform a visual inspection of the cutter
before placing it into operation. If any problems are
found, do not use the tool. Make repairs before using
the cutter.
• Do not use the cutter if it is leaking oil. Do not use the
cutter if damaged, altered or in need of repair.
• Do not remove or disable cutter safety devices.
Before using the cutter, make sure that all the safety
devices (guards, etc.) are in place and in good
condition.
• Do not remove the guards installed on the cutter or
on any accessories. Replace any guards immediately
if they develop faults or become damaged.
• Do not alter the calibration of the safety devices,
such as maximum pressure valves (if equipped).
• Allow only authorized, trained, and experienced
personnel to operate the cutter and supervise its use.
• Ensure that all users are trained and qualified to
operate the cutter. Operators must be aware of
all applicable occupational safety laws and must
operate the cutter in accordance with all such laws.
• Keep the work area clean and well illuminated.
• When operating the cutter, do not wear loose clothing
or jewelry. These items could get caught up in the
cutter during operation. Tie up long hair.
• Always wear and use appropriate personal protective
equipment (PPE) such as non-skid safety shoes,
hard-hat, hearing protection, and face and eye
protection. Use of these and other PPE items (used
as appropriate for the conditions) will reduce the
chance of personal injuries. The use of these items
may also be required by local regulations or laws.
• Consult your employer concerning specific safety
requirements and the safety equipment required for
use in your country or region.
• Be certain that cutting head is closed before starting
the cutter.
• Always stop the cutter before opening the cutting
head. Never open the cutting head during operation.
• Before reaching inside the cutting area for any reason,
always stop the pump, relieve hydraulic pressure and
disconnect pump from AC power supply.
• Keep others clear of the work area while the tool is
in use. Be sure that all personnel not operating the
cutter remain at a safe distance when the cutter is
in operation.
• Stop the cutter if people and/or animals enter the
work area.
• Ensure that the operator is alert, observant of the
task being performed and that the work is being done
with care.
• Do not allow use of the cutter by persons that are
tired, or under the influence of drugs, alcohol or
medication.
• Do not allow children to operate the cutter or to assist
with its use. Keep children out of the work area.

3
• Always be certain that hydraulic pressure is fully
relieved before disconnecting hydraulic hoses,
loosening hydraulic fittings, or performing any tool
disassembly or repair procedures.
CAUTION
Failure to observe and comply with the
following precautions and instructions could result
in minor or moderate personal injury. Property
damage could also occur.
• To help ensure proper operation and best
performance, use only Enerpac HF hydraulic oil. Use
of any other oil may result in unsafe operation and /or
damage to tool. The Enerpac product warranty may
also be invalidated.
• Be careful to avoid damaging hydraulic hoses. Avoid
sharp bends and kinks when routing hydraulic hoses.
Do not exceed the minimum bend radius specified
by the hose manufacturer. 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 hoses. 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 couplers.
Use the equipment handle(s) or lifting eye(s) (if equipped)
and appropriately rated lifting equipment.
• Keep hydraulic equipment away from flames and
heat. Excessive heat will soften packings and seals,
resulting in fluid leaks. Heat also weakens hose
materials and packings.
• Protect all hydraulic equipment from weld spatter.
1.4 Safety Symbols (on cutter)
WARNING
Failure to observe and comply with the
safety symbols axed to the cutter housing could
result in death or serious personal injury.
WARNING
Make sure the safety symbols (decals,
labels, etc.) are securely axed to the tool and that
they are legible. If not, obtain replacements from
Enerpac. Refer to tool repair parts sheet for locations
and part numbers. Failure to maintain safety symbols
on tool could result in death or serious personal
injury.
The following safety symbols are axed to the cutter
housing:
Crush hazard: Keep hands, fingers and other
body parts away from the cutting head during
operation.
Projectile hazard: Objects may be ejected
from the cutter during operation. Stay clear of
cutting area. Wear eye and face protection.
1.3 General Hydraulic Tool Safety Precautions
(Tools with external hydraulic pumps)
NOTICE:
WARNING Failure to observe and comply with the
following precautions and instructions could result
in death or serious personal injury. Property damage
could also occur.
• Always read, follow and completely understand
all manufacturer's instructions when operating
pumps, valves and all other devices used with the
tool. Follow all safety precautions contained in the
manufacturer's manuals.
• Use the tool only with a compatible Enerpac pump.
Use of a non-compatible pump may result in erratic
and/or unsafe operation.
• The tool is designed for a maximum working pressure
of 10,150 psi [700 bar]. Do not connect the tool to a
pump with a higher pressure rating. Be certain that all
hydraulic hoses and fittings are properly connected
and that they are rated at 10,150 psi [700 bar] or
higher.
• Never set a relief valve to a higher pressure than
the maximum rated pressure of the pump and tool.
If ratings are dierent, relief valve setting should not
exceed the setting of the lowest rated component
(pump or tool).
• Perform cleaning, maintenance and repair operations
only after disconnecting the tool from the hydraulic
pump.
• Wear suitable personal protective equipment (PPE)
such as goggles, gloves and protective clothing
when checking hoses and fittings.
• Do not leave the tool unattended in the workplace
when it is connected to the hydraulic pump.
• The tool is designed for noncontinuous use. Allow
suciently long pauses to allow the oil to cool.
Consult Enerpac if prolonged and/or interrupted use
is required.
• Do not expose tool to temperatures in excess of
158°F [70°C]. Allow tool to cool or remove heat
source.
• Be aware of hot metal components. Avoid contact
with these components to prevent burns.
• 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.
• Never use a hydraulic cylinder or tool with uncoupled
couplers.
• Do not remove or disable the pump relief valve.
Do not remove or disable the tool relief valve (if
equipped).
• Monitor the system hydraulic pressure gauge (or
digital pressure readout). It is your window to see
what is happening in the system.

4
PPE Alert: Wear personal
protective equipment
(PPE) when using or
servicing equipment.
Instruction Manual Alert: Read the
instruction manual before using or servicing
equipment.
1.5 Disconnecting Pump AC Power
WARNING
Pump MUST be disconnected from the
AC power supply before performing cutter
maintenance, repair or cleaning procedures, or
before allowing persons to reach inside the cutting
head for any reason. Failure to observe this
precaution may result in serious personal injury.
• Cutter will operate immediately when pump motor
is running, and either of the cutter push buttons is
depressed.
• If it is not possible to unplug the pump power cord
from the AC power outlet, turn o and lock out
power at the AC power supply and disconnect the
hydraulic hoses.
• Refer to the separate pump instruction sheet
(provided with the pump) for detailed pump safety,
operation and maintenance instructions.
1.6 Crush Hazard
DANGER Cutter will start immediately when
pump motor is ON and cutter advance or retract
button is depressed.
DO NOT place hands, fingers or other parts of
your body inside the cutting head unless pump
is disconnected from AC power supply. Death or
serious personal injury will result if cutter is operated
while persons are working inside the cutting head.
• Never reach into the cutting head while cutter is in
operation.
• Before reaching inside the cutting head for any
reason, always stop the pump, relieve hydraulic
pressure, and disconnect pump from AC power
supply.
CRUSH HAZARD
Do not reach inside cutting head
unless pump is disconnected from
AC power supply.

5
2.0 PRODUCT DATA
2.1 Cutter Maximum Capacities
Cutter
Model
No.
Material to be Cut
Material Maximum
Diameter
in mm
EWCH90 Round electrical or communications cables. 3.54 90
EWCH140 Round electrical or communications cables. 5.51 140
NOTICE
Material to be cut must not exceed the limits shown above.
Cutter may stall during operation if one or more of the maximum limits is exceeded.
2.2 Specifications
Cutter
Model
No.
Max. Cutting
Force Weight
Max. Hyd.
Operating
Pressure
Ambient
Operating Temp
Hyd.
Pump*
Tons kN lb Kg psi bar ˚F ˚C
EWCH90 61.8 550 117 53 10,150 700
-40
to
+122
-40
to
+50
External
EWCH140 61.8 550 198 90 10,150 700
-40
to
+122
-40
to
+50
External
Notes:
* Hydraulic pump sold separately. Special Enerpac pump required. Refer to Section 6.1 for additional information.
Product specifications are subject to change without notice.

6
2.3 External Dimensions
EWCH90
D
A
C B
Product dimensions are subject to change without notice.
Dimension in mm
A 22.9 582
B 11.1 282
C 9.9 251
D 6.7 169
EWCH140
B
C
AD
Product dimensions are subject to change without notice.
Dimension in mm
A 30.8 782
B 9.6 245
C 12.2 309
D 6.7 169
D
A
C B

7
Figure 1, Features and Components, Models EWCH90 and EWCH140
6
3
5
4
9
1
87
210
Key:
1. Cutting Head
2. Locking Latch
3. Push Buttons (advance - retract)
4. Positioning Handle #1
5. Hydraulic Hoses and Electrical Cable (short length)
6. Hydraulic Cylinder
7. Positioning Handle #2
8. Moving Blade
9. Fixed Blade
10. Lifting Eye
EWCH140 Cutting Head Details
NOTICE
Mounting location of positioning handle #2
(Figure 1, item 7) has been changed for latest
production EWCH90 cutters. Handle now
attaches to the lifting eye bracket instead of
the cutter cylinder head.
Please note that the old handle mounting
location remains shown in some of the figures
on the following pages of this manual.
EWCH90 shown
(features of EWCH140 similar)

8
3.0 CONFORMANCE TO NATIONAL AND
INTERNATIONAL STANDARDS
Enerpac declares that this product has been
tested and conforms to applicable standards
and is compatible with all CE requirements.
A copy of an EU Declaration of Conformity is
enclosed with each shipment of this product.
4.0 DESCRIPTION
Enerpac models EWCH90 and EWCH140 are fixed-
head hydraulic cutters designed to cut round electrical
and communications cables.
The cutter contains two blades, one fixed and one
moving. The moving blade is actuated by an integral
double-acting hydraulic cylinder. The double-acting
design ensures positive blade return and also helps
prevent jamming or sticking.
Hydraulic power is supplied by an Enerpac hydraulic
pump, which is sold separately from the cutter. Refer to
Section 6.1 for additional pump information.
See Figure 1 for a description of cutter major features and
typical items included in the shipment. Refer to Section
2.0 for maximum cutting capacities, specifications and
dimensions.
5.0 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.
6.0 SET-UP
6.1 Hydraulic Pump Requirements
The cutter must be used in conjunction with a specially
designed hydraulic pump (sold separately). This pump
contains unique valving and controls that are specific
to the cutter.
Refer to the pump instruction sheet for detailed
pump setup and operation instructions. Also refer to
Section 6.4 of this manual for additional details.
6.2 Hydraulic Connections
A high pressure twin hydraulic hose assembly connects
the pump control valve to the cutter. The hoses are
included as part of a hose subassembly that also
contains an electrical cable for the cutter controls. This
subassembly is not included with the cutter and must be
purchased separately.
To facilitate connections, quick-disconnect hydraulic
couplers are present on the hoses, the cutter, and on
the pump control valve.
NOTICE:
WARNING Hydraulic oil can reach very high
temperatures even when the cutter is idle and
cutting force is not being applied. To prevent burns,
always use suitable personal protective equipment
when connecting or disconnecting couplers on a
cutter that has been in operation.
NOTICE:
WARNING Never use any hydraulic component that
contains damaged hydraulic couplers. Never connect
or disconnect a hydraulic coupler if the hydraulic circuit
is pressurized. Failure to observe these instructions
may result in the uncontrolled release of pressurized
hydraulic oil. Skin penetration may occur. Death or
serious personal injury could result.
NOTICE
All hydraulic hoses and fittings used with the
cutter must be rated at 10,150 psi [700 bar] or above.
6.2.1 Connecting the Hydraulic Couplers
1. Be sure that pump motor is stopped.
2. Be certain there is no residual pressure in the
hydraulic circuit. If pressure is present, discharge the
pressure in accordance with the instructions in the
pump instruction sheet.
Repeat steps 3 through 6 for each hydraulic connection.
See Figures 2 and 3 for hookup details.
NOTICE
Before connecting hydraulic hoses, be certain
that the electrical cable (included in hose and cable
subassembly) is properly oriented. Note that electrical
connectors are dierent on cutter and pump ends.
3. Remove the coupler dust caps.
4. Inspect the couplers after removing the dust caps.
Remove any oil, dust or dirt.
5. Push the male and female couplers firmly together
until engagement occurs.
6. Screw the threaded collar of the female coupler fully
onto the threaded flange of the male coupler. Be sure
that no threads are visible.
6.2.2 Disconnecting the Hydraulic Couplers
1. Be sure that pump motor is stopped.
2. Be certain there is no residual pressure in the
hydraulic circuit. If pressure is present, discharge the
pressure in accordance with the instructions in the
pump instruction sheet.
Repeat steps 3 through 5 for each hydraulic connection.
See Figures 2 and 3.
3. Unscrew the threaded collar of the female coupler
from the threaded flange of the male coupler.
4. Disconnect the couplers. Remove any oil, dust or dirt.
5. Reinstall the coupler dust caps.
6.3 Electrical Connections
An electrical cable connects the pump electrical circuits
to the push button controls mounted on the cutter. This
cable is included as part of the hydraulic hose and
electrical cable subassembly.
Connect the electrical cable as described in the following
steps. See Figures 2 and 3.
1. Be sure that pump is disconnected from AC power
supply.
2. Connect one end of the electrical cable to the electrical
connector at the pump electrical control box.
3. Connect the other end of the electrical cable to the
electrical connector at the cutter.

9
If the pump and/or cutter is being used for the first time,
be certain to bleed air from the hydraulic system as
described in Section 8.4 before using the cutter.
Verify that pump oil level is correct and that there are no
oil leaks or other obvious problems.
Figure 2, Hydraulic and Electrical Connections at Cutter
2
1
Key:
1. Hydraulic Hoses and Couplers
2. Electrical Connectors and Cable
6.4 Pump Setup
Prepare the pump for operation as described in the
pump instruction sheet.
Before connecting the pump to the cutter, verify that the
pump relief valve is set at 10,150 psi [700 bar].
Figure 3, Hydraulic and Electrical Connections at Pump
1
1
2
Key:
1. Hydraulic Hoses and Couplers
2. Electrical Connectors and Cable
Connected view
To Pump

10
Figure 4, Locking Latch
7.0 CUTTING HEAD
7.1 Description
When closed, the cutting head prevents hand contact
with the moving piston and blade.
NOTICE:
WARNING
Failure to observe and comply with the
following precautions and instructions could result
in serious personal injury.
• Always close the cutting head before beginning
the cutting process.
• Never operate cutter with cutting head open.
• Never open cutting head while cutter is operating.
Cutting head must remain closed until cutter is
stopped.
• Before reaching inside the cutting head to clear
jams or for any other reason, always stop the
pump, relieve hydraulic pressure and disconnect
pump from AC power supply.
• Always close cutting head after performing any
adjustments, maintenance or repairs.
• Be certain that cutting head is in good condition
and secured.
7.2 Opening and Closing the Cutting Head
The cutting head can be opened and closed to allow the
material to be inserted into the cutting head.
NOTICE:
WARNING
Be certain that cutter is o before
opening or closing the cutting head. Serious personal
injury may result if this precaution is not observed.
To open the cutting head: lift up on the locking latch
and swing it up and away from the cutter body as shown
in Figure 4. Then, swing the cutting head away from the
cutter body as shown in Figure 5.
To close the cutting head: swing the cutting head
toward the cutter body. Then, push down on the locking
latch to lock the cutting head in place, as shown in
Figure 6.
Figure 5, Opening the Cutting Head
Figure 6, Closing the Cutting Head

11
8.0 CUTTER OPERATION
8.1 Foreseen Use and Residual Risks
NOTICE:
WARNING
Failure to observe and comply with the
instructions and precautions contained in the
following paragraphs could result in death or serious
personal injury.
1. The cutter is designed for cutting round electrical
and communications cables. The material must not
exceed the maximum allowable diameter shown in
Section 2.1 for your cutter model.
2. The cutter may be used only when connected to a
compatible Enerpac hydraulic pump.
3. Operators must observe the instructions in this
manual in order to minimize the risk of accidents. In
particular, operators must pay attention when working
in conditions that could cause:
• Possible burns from overheated parts.
• Injury due to incorrect positioning or inadequate lifting
or moving.
• Injury caused by splinters discharged from the bar or
other work piece.
NOTICE:
WARNING
People remaining in the vicinity of the
cutter while it is working are subject to the risk of
flying debris (dangerous objects, etc.). Serious
personal injury could result.
4. Incorrect Uses:
• Cutter must not be used for purposes other than those
indicated in this document.
• Cutter must not be used in areas subject to the risk
of explosion.
• Cutter must not be used to cut structural or high-
tension cables.
8.2 Positioning and Transporting the Cutter
• Before inserting material to be cut inside the cutting
head, be certain that the cutter is positioned on a solid
and stable work surface of sucient weight rating
capacity. Refer to Section 2.2 for cutter weight.
• Position the cutter as needed using the positioning
handles located at the side and rear of the cutter
hydraulic cylinder. See Figure 1.
• If it is necessary to move or transport the cutter, use
only the cutter handles or the supplied lifting eye. See
Figure 7. Use appropriately rated lifting equipment.
NOTICE:
WARNING Because the cutter components are
very heavy, there is a risk of cuts, crushing or broken
bones. To avoid accidents, use care when working
with the cutter. Serious personal injury may result if
the cutter is not properly supported and handled in
an appropriate way.
Figure 7, Cutter Lifting Location
8.3 Operating Precautions
NOTICE:
WARNING
Failure to observe the following
precautions and instructions could result in death or
serious personal injury.
• Keep fingers, hands and other body parts clear of
the cutting head. Be certain that cutting head is
closed and latched before starting the cutter.
• Do not attempt to reposition the item being cut
while the cutter is in operation. Always stop the
cutter and then move the piston to the “home” (fully
retracted)position before repositioning the item.
• Dangerous projectiles could occur at any time
during cutting. Always wear face and eye protection.
Keep persons away from cutting area.
• Cutter surfaces can become very hot. To prevent
burns, avoid contact with cutter components and
wear appropriate personal protective equipment.
• Refer to additional safety precautions in Section 1.0
of this manual before using the cutter or performing
any maintenance or repair activities.

12
8.6 Cutter Controls
Two push buttons control cutter operation. One push
button is for the advance function and the other push
button is for the retract function.
With the pump motor ON:
• Press and hold the advance push button to advance
the piston and slide the moving blade forward. See
Figure 10.
• Press and hold the retract push button to retract the
piston and slide the moving blade backward. See
Figure 11.
• Release either push button at any time to stop
movement of the piston and moving blade. Be advised
that there may be a brief delay for the piston and blade
to make a complete stop.
8.4 Trapped Air Removal
Before placing a new cutter into operation, cycle the
piston several times without load to remove any trapped
air in the hydraulic circuit. The tool should also be placed
below the pump so the air can escape to the pump
reservoir.
Air is completely purged when the piston advances and
retracts smoothly in both directions, from fully extended
to fully retracted.
This procedure may also be performed after the cutter
has been serviced.
Refer to the cutter controls information in Section 8.6 of
this manual when performing the air removal procedure.
8.5 Positioning Material
Always be sure that the piston and moving blade are in
the fully retracted “home” position before placing any
material inside the cutting head. See Figure 8.
90°
90°
Figure 9, Positioning Material in the Cutting Head
Figure 8, Piston and Blade in Home Position
(fully retracted)
Open the cutting head and place the material inside.
Then, close the cutting head. Refer to Section 7.2 for
additional information.
Position the material to be cut between the cutter
blades, so that it is perpendicular to the piston axis, as
shown in Figure 9. This will provide the best quality cut
while placing the least amount of load on the cutter.
NOTICE
Be certain that the diameter of the material to
be cut does not exceed the maximum allowable diameter
specified for your cutter model. Refer to the chart in
Section 2.1 of this manual for additional information.
Faliure to observe the instruction may result in poor
cutting performance and/or damage to the cutter.

13
1
Figure 10, Operation - Advance/Cut
2
Figure 11, Operation - Retract
8.7 Cutting Procedure (typical)
1. Be certain that the diameter of the material to be cut
does not exceed the maximum allowable diameter
specified for your cutter model. Refer to the chart in
Section 2.1 of this manual.
2. Be sure that the piston is in the “home” (fully retracted)
position. See Figure 8.
3. Open the cutting head. Refer to Section 7.2 for
additional information.
4. Place the material into the cutting head and close
the cutting head. Refer to Section 7.2 for additional
information.
5. Be sure that the material is positioned perpendicular
to the piston axis, as shown in Figure 9. Refer to
instructions in Section 8.5 for additional information.
NOTICE
Failure to properly position the material in
the cutting head may result in blade breakage and
reduced cutting eciency.
6. Start the pump motor.
7. Press and hold down the advance push button until
the item has been fully cut.
8. Press and hold down the retract push button until
the moving blade moves fully rearward and is in the
“home” (fully retracted) position.

14
9.3 Fasteners
Periodically check all screws, nuts and other fasteners
for proper tightness. Tighten any loose fasteners.
Replace any worn or damaged fasteners. This should
be performed periodically or every day in the event of
frequent or prolonged cutter operation.
NOTICE
Failure to check and tighten fasteners as
required may result in serious damage to the cutter.
9.4 Preparation for Maintenance
All cutter maintenance procedures must be performed
under the following conditions:
• All hydraulic pressure must be relieved. Refer to the
pump instruction sheet for pressure relief procedure.
• The pump must be disconnected from the AC power
supply.
• The cutter must be given time to cool to prevent burns.
• Procedures must be performed in a suitable work
environment in accordance with all current safety
regulations and/or laws in your country or region.
• The cutter must be cleaned thoroughly before
maintenance procedures are performed.
• Suitable personal protective equipment (PPE) must be
used and/or worn while performing any work.
NOTICE:
WARNING Ensure that any guards or shields (if
present) have been correctly reinstalled before
placing the cutter back into service after maintenance
procedures are completed. Failure to reinstall these
devices could result in serious personal injury.
9.0 MAINTENANCE
9.1 Periodic Maintenance Table
Refer to the Periodic Maintenance Chart (Table 1) for a
list of various routine checks and procedures.
NOTICE:
WARNING Disconnect cutter from AC power
supply before performing any cleaning, maintenance
or repair procedures. Failure to observe this
precaution could result in death or serious personal
injury.
9.2 Cleaning
• Clean the cutter using a dry cloth or compressed air.
For plastic surfaces, use a cloth slightly dampened
with water.
• Use a soft brush or compressed air to remove any
cutting remnants or debris that have collected in
the cutting head. These items can become caught
between the blade and head, resulting in decreased
blade/tool life. This should be checked often.
NOTICE:
CAUTION
To prevent possible injury, always wear
safety glasses or face mask when using compressed
air.
• Be sure there are no traces of oil, grease or corrosive
substances on the tool, especially on the grips.
• Use a damp cloth and soapy water to clean plastic
components.
• Do not use gasoline or thinner to clean the tool.
Table 1 - Periodic Maintenance Chart
Time Interval Maintenance Operation Method To be performed by:
Frequently
during use:
Check for any cutting remnants
or debris that have collected in
the cutting head.
If these items are found,
disconnect the cutter from the
AC power supply and remove
remnants or debris as required.
Visual (refer to instructions
in Section 9.2)
Operator
Every 8 hours of
operation:
Check the cutter for loose,
damaged or worn parts.
Check for oil leaks. Tighten,
replace or repair as required.
Visual Operator
Clean the cutter. (Refer to instructions in
Section 9.2)
Operator
Check that screws and bolts are
properly tightened. Replace any
missing screws or bolts.
(Refer to instructions in
Section 9.3)
Operator
As required: Replace fixed blade. (Refer to instructions in
Section 9.5.1)
Operator
Replace moving blade. (Refer to instructions in
Section 9.5.2)
Operator

15
9.5 Blade Replacement
The use of worn blades decreases the eectiveness of
the cutter and can also side load the cylinder, possibly
damaging the tool. Pump overheating may also occur.
Replace blades immediately when it is noticed that
they are worn and/or damaged, or if there has been a
noticeable decrease in cutting performance.
The cutter contains a fixed blade and a moving blade.
Refer to Section 9.5.1 for fixed blade replacement
instructions and to Section 9.5.2 for moving blade
replacement procedures.
NOTICE:
CAUTION Use extreme caution when removing
and installing blades. Blades may be sharp even
when worn. To avoid hand injury, wear appropriate
hand protection and avoid contact with blade cutting
edges.
NOTICE
To help ensure even blade wear and optimum
cutting performance, it is recommended that both the
fixed blade and the moving blade be replaced at the
same time.
9.5.1 Fixed Blade Replacement
Replace the fixed blade as described in the following
steps. Refer to Figure 12.
1. Start the pump. Move the piston to the “home”
position (fully retracted). See Figure 8.
2. Stop the pump. Be sure that hydraulic pressure is
completely relieved.
3. Disconnect pump from AC power supply.
NOTICE:
WARNING Always disconnect pump from AC
power supply before beginning cutter blade
replacement procedures. Failure to observe this
precaution could result in accidental startup as
procedures are being performed. Serious personal
injury could result.
4. Place the cutter horizontally on a stable work surface.
5. Open the cutting head. Refer to Section 7.2 for
additional information.
6. Remove retaining ring (Figure 12, item 1B). Remove
clevis pin (Figure 12, item 5) and cutting head
(Figure 12, items 6-14).
7. For model EWCH90, remove nine capscrews
(Figure 12, item 6), washers (Figure 12, item 13)
and nuts (Figure 12, item 14). For model EWCH140,
remove six socket head screws, washers and nuts.
8. Separate left side outer plate (Figure 12, item 9), inner
plate (Figure 12, item 11) and right side outer plate
(Figure 12, item 12).
9. For model EWCH90, remove eight fixed blade
screws (Figure 12, item 7) and washers (Figure 12,
item 8) and remove fixed blade (Figure 12, item 10). For
model EWCH140 remove seven fixed blade screws
and washers and remove blade.
10. For model EWCH90, install new fixed blade
(Figure 12, item 10) onto left side outer plate
(Figure 12, item 9) with eight fixed blade screws
(Figure 12, item 7) and lock washers (Figure 12,
item 8) and torque to 91 in-lb [10 Nm]. Also apply
Loctite 243 or equivalent.
11. For model EWCH140, install new fixed blade
(Figure 12, item 10) onto left side outer plate
(Figure 12, item 9) with seven fixed blade screws
(Figure 12, item 7) and lock washers (Figure 12,
item 8) and torque to 18 ft-lb [25 Nm]. Also apply
Loctite 243 or equivalent.
12. Assemble the left side outer plate (Figure 12, item 9),
inner plate (Figure 12, item 11) and right side outer
plate (Figure 12, item 12) using nine capscrews
(Figure 12, item 6), washers (Figure 12, item 13)
and nuts (Figure 12, item 14) for model EWCH90
and six socket screws, washers and nuts for
model EWCH140. Torque to 155 ft-lb [211 Nm]. Also
apply Loctite 243 or equivalent.
13. Attach cutting head (Figure 12, items 6-14) to
tool body using clevis pin (Figure 12, item 5) and
retaining ring (Figure 12, item 1B).
14. Close the cutting head. Refer to Section 7.2 for
additional information.
15. Test for proper operation before placing the cutter
back into service.

16
6
7
9
10
11
12
13
1B
8
1A
2
5
3
4
14
Figure 12, Fixed Blade Replacement (Model EWCH90 shown, EWCH140 similar)
Key:
1A. Retaining Ring
1B. Retaining Ring
2. Spring
3. Locking Latch
4. Clevis Pin
5. Clevis Pin
6. Capscrews
7. Screws
8. Lock Washers
9. Left Side Outer Plate
10. Fixed Blade
11. Inner Plate
12. Right Side Outer Plate
13. Washers
14. Nuts
9.5.2 Moving Blade Replacement
Replace the moving blade as described in the following
steps:
1. Start the pump. Retract the piston to the home
position.
2. Stop the pump. Be sure that hydraulic pressure is
completely relieved.
3. Disconnect pump from AC power supply.
NOTICE:
WARNING Always disconnect pump from AC
power supply before beginning cutter blade
replacement procedures. Failure to observe this
precaution could result in accidental startup as
procedures are being performed. Serious personal
injury could result.
4. Open the cutting head. Refer to Section 7.2 for
additional information.
5. Loosen and remove the moving blade screw
(Figure 13, item 1).

17
10.2 Return to Use (after storage)
Before using the cutter after an extended period of
storage or inactivity, perform the following steps:
• Remove protective oil coating (applied before storage)
from cutter surfaces.
• Check for oil leaks. Make repairs as required.
• Check that the tool hydraulic hoses and electrical
cable are intact and undamaged.
• Check for any missing, worn or improperly installed
parts.
• Check that all screws, nuts, bolts and other fasteners
are tight.
• Replace, repair or tighten components as needed.
6. Remove the worn moving blade (Figure 13, item 2).
7. Install new moving blade (Figure 13, item 2) into the
piston.
8. Install the new moving blade screw (Figure 13,
item 1). Torque to 18 ft-lb [25 Nm]. Apply Loctite 243
or equivalent.
9. Lubricate the slide slot and the tool guide in the
cutting head using an NLGI Grade 2 extreme pressure
lithium grease.
10. Close the cutting head. Refer to Section 7.2 for
additional information.
11. Test for proper operation before placing the cutter
back into service.
10.0 STORAGE
10.1 Storage Guidelines
If the cutter will be stored for an extended period of time:
• Disconnect hydraulic hoses from cutter. Be sure that
dust caps are installed on hydraulic couplers.
• Thoroughly clean the cutter.
• Lubricate the cutter metal surfaces with a thin layer
of oil.
• Store the cutter in a clean and dry place, accessible
only to authorized personnel.
Figure 13, Moving Blade Replacement (Model EWCH90 shown, EWCH140 similar)
1
2
Key:
1. Moving Blade Screw
2. Moving Blade

18
11.0 TROUBLESHOOTING
Refer to the Cutter Troubleshooting Chart (Table 2) for
a list of common hydraulic cutter symptoms, possible
causes and solutions.
For repair service, contact an Enerpac authorized service
center. Inspection and repairs should be performed
only by an Enerpac authorized service center or other
qualified hydraulic tool service facility.
Table 2 - Cutter Troubleshooting Chart
Symptom Possible Cause Solution Maint. Level
1. Piston moves
slowly and/or has
diculty cutting
the material.
Excessive cutting debris in the
cutting head.
Clean out debris. Operator
Blocked or restricted hydraulic oil
flow.
Check for incomplete
hydraulic connections,
blocked hydraulic hoses or
other similar problems.
Operator
Low hydraulic oil level. Check oil level. Add oil if low. Operator
Material being cut is outside of
acceptable specifications.
Material properties must not
exceed stated maximum
limits. Refer to Section 2.1.
Operator
Low hydraulic oil pressure or flow. Check pump relief valve
setting. Troubleshoot and
repair pump and solenoid
control valve (as required).
Service Center
Cutter seal wear and/or internal
damage.
Repair cutter as required. Service Center
2. Cutter vibrates
during operation.
Loose or missing screws or bolts. Verify screws and bolts are
properly tightened. Replace
any missing screws or bolts.
Operator
3. Piston does not
advance or retract
when pump motor
is ON and cutter
push buttons are
pressed.
Pump not connected to electrical
power.
Check that pump is connected
to AC power supply. Be sure
that pump is on.
Operator
Electrical cable disconnected at
pump or at cutter.
Connect electrical cable. Operator
Cutter push button switches and/or
wiring defective.
Repair or replace cutter
electrical components as
required.
Service Center
Pump solenoid control valve
components defective.
Repair or replace control valve
components as required.
Service Center
4. External oil leaks. Loose hydraulic fittings. Tighten loose fittings. Operator
Damaged hydraulic hoses. Replace hoses. Operator
Damaged hydraulic couplers. Replace couplers. Service Center
Worn or damaged cutter
components.
Repair cutter as required. Service Center

Notes:

WWW.ENERPAC.COM