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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 by genuine ENERPAC parts. Standard grade parts
will break causing personal injury and property damage.
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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.
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WARNING:
Keep hands clear of moving parts and
pressurized hoses.
WARNING: These pumps have internal factory adjusted
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relief valves, which must not be repaired or adjusted
except by an Authorized Enerpac Service Center.
CAUTION: To prevent damage to pump electric motor,
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check specifications. Use of incorrect power source will
damage the motor.
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3.0 SPECIFICATIONS
3.1 Performance Chart (see Performance Chart below)
3.2 Flow Charts (see Figure 1)
Figure 1
Flow and Current vs. Pressure
700
600
500
400
300
200
100
0 0
0
1000
2000
3000
4000 5000
Current (Amps)
Flow (in
3
/min)
4.0 INSTALLATION
Install or position the pump to ensure that air flow around the
motor and pump is unobstructed. Keep the motor clean to ensure
maximum cooling during operation.
M
ZU4 PERFORMANCE CHART
Motor
Output Flow Rate
Size
in
(hp)
100 psi
700 psi
1.7*
700
535
* Actual power consumption depends on the application. See Figure 1.
600
7000
8000
9000
10,000
Pressure (psi)
3
/min
5,000 psi
10,000 psi
76
60
4.1 Reservoir Breather Cap (See Figure 2)
For shipping purposes, a shipping plug (A) is installed in the
breather port on the top of the reservoir. Before using replace the
shipping plug with the breather cap (B). NOTE: The breather port
(B) is separate from the oil fill port (C). Oil fill port (C) uses a SAE
#10 plug.
4.2 Pump Mounting
Refer to Figure 3 for mounting dimensions to secure the pump to
a fixed surface.
1, 2 Gal. (4-8 L)
in. (mm)
A
9.46 (240)
B
3.75 (95)
C 16.28 (414)
25
D 9.00 (229)
E
2.86 (73)
20
F
3.64 (92)
15
G M8 x 1.25
10
5
0
11,600
A
B
Motor Electrical
Specifications
(Volts-Ph-Hz)
115-1-50/60
230-1-50/60
2
A
Figure 2, ZU4 Breather Installation
2.5 Gal, (10 L)
5 Gal, (20 L)
in. (mm)
in. (mm)
12.0 (305)
16.6 (421)
11.0 (279)
15.6 (396)
17.6 (446)
17.6 (446)
12.0 (305)
12.0 (305)
0.5 (13)
0.5 (13)
2.8 (71)
2.8 (71)
Ø .34 (8.6) diameter through hole
0.25 (6) deep
F
G
D
C
Figure 3
Relief Valve
Sound
Adjustment Range
Level
(dBA)
(psi)
1,400 - 11,600 for "E" version
85 - 90
1,400 - 10,000 for "Q" version
B
C
10 Gal, (40 L)
in. (mm)
19.9 (505)
18.9 (480)
17.6 (446)
12.0 (305)
0.5 (13)
2.8 (71)
E
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