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DANGER: Do not handle pressurized hoses. Escaping
oil under pressure can penetrate the skin, causing serious
injury. If oil is injected under the skin, see a doctor
immediately.
WARNING: Only use hydraulic cylinders in a coupled
system. Never use a cylinder with unconnected couplers.
If the cylinder becomes extremely overloaded, components
can fail catastrophically causing severe personal injury.
IMPORTANT: Hydraulic equipment must only be serviced
by a qualified hydraulic technician. For repair service,
contact the Authorized ENERPAC Service Center in your
area. To protect your warranty, use only ENERPAC oil.
WARNING: Immediately replace worn or damaged parts
with genuine ENERPAC parts. Standard grade parts will
break causing personal injury and property damage.
ENERPAC parts are designed to fit properly and withstand high
loads.
WARNING: Do not use electric pumps in an explosive
atmosphere. Adhere to all local and national electrical
codes. A qualified electrician must do installation and
modification.
FLOW CHARTS
ZW3 Series
1000
900
800
700
600
500
400
300
200
100
0
0
1,000
2,000
3,000
Pressure (psi)
ZW3 series two-stage
PERFORMANCE CHART
Pump
Operation
Series
ZW3
Two-stage
Single-stage
ZW4
Two-stage
Single-stage
ZW5
Two-stage
Output flow rate is listed at 60 Hz.
Flow rate will be approximately
1000
900
800
700
600
500
400
300
200
100
0
0
4,000
5,000
ZW4 series single-stage
ZW4 series two-stage
Output Flow Rate
3
(in
/min)
100 psi
700 psi
202
190
64
63
350
305
128
126
650
602
5
/
of these values at 50Hz.
6
Figure 1, Pump Specifications
WARNING: Start the pump with the valve in the neutral
position to prevent accidental cylinder operation. Keep
hands clear of moving parts and pressurized hoses.
WARNING: These pumps have internal factory adjusted
relief valves, which must not be repaired or adjusted
except by an Authorized Enerpac Service Center.
CAUTION: To prevent damage to pump electric motor,
check specifications. Use of incorrect power source will
damage the motor.
3.0 SPECIFICATIONS
3.1 Flow Charts (see Figure 1)
3.2 Performance Charts (see Figure 1)
3.3 Electric Current Draw
(Refer to Table 4 in Section 8.0 of this manual)
ZW4 Series
1,000
2,000
3,000
4,000
5,000
Pressure (psi)
Motor Size
5,000 psi
hp
40
60
1.0
60
120
1.5
120
2
ZW5 Series
1000
900
800
700
600
500
400
300
200
100
0
0
1,000
2,000
3,000
Pressure (psi)
ZW5 series single-stage
ZW5 series two-stage
Relief Valve
Adjustment
Range
RPM
(psi)
1750
1,000 - 5,000
1750
1,000 - 5,000
4,000
5,000
Sound
Level
(dBA)
75
75
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