Enerpac PR-Series Electric - Handbuch (Seite 5)

4.0 INITIAL SETUP
4.1 Adding Oil
Before startup, remove the oil fill plug (see figures 1 and 2, item
#11) and check oil level. Oil level should be about 1 inch [25 mm]
below top of reservoir. Add Enerpac HF hydraulic oil to reservoir
if necessary. Refer to Section 6.1 for additional information.
4.2 Electrical Requirements
Be sure outlet is correct for your jack model. Refer to jack data
plate for voltage and phase requirements.
The electrical disconnect and line circuit protection is to be
provided by the customer. Line circuit protection is to be 115
percent of motor full load current rating.
On single-phase models, a power cord and plug of the proper
type for the line voltage specified at time of order is included.
WARNING: Altering the plug type should only be done
by a qualified electrician, adhering to all applicable
local and national codes.
On three phase models, the power cord is provided without
a plug. A qualified electrician must install and wire the proper
type of plug that is compatible with the jack's specified power
requirements. Plug installation and wiring must be in compliance
with all applicable codes and ordinances.
4.3 Using the Jack for The First Time
Note: See figures 1 and 2 for items in parenthesis (. . .).
1. Be sure that lever on control valve (item #5) is in the center
(neutral/hold) position.
2. Connect the jack power cord to an electrical outlet.
3. On three phase models only, press and release the pendant
button while observing motor fan rotation. Check that fan rotates
in same direction as arrow (item #23) on top of motor housing.
Note: Perform the following steps with no load on the cylinder.
Refer to Section 5.0 for detailed jack operation instructions.
4. Check for proper operation by fully extending and retracting
the cylinder (item #13). Use the lever on the control valve
(item #5) and the button on the pendant (item #6) to control
cylinder movement. To remove air from system, cycle the
cylinder as needed until operation is smooth.
4.4 Using the Handle Assembly to Position the Jack
Note: See figures 1 and 2 for items in parenthesis (. . .).
1. Push handle lock lever (item #1) to release lock pin.
2. With lock pin released, position handle assembly (item #2)
to desired location and release handle lock lever (item #1) to
engage lock pin.
3. The jack can now be tilted back onto the wheels and pushed
or pulled to the work area. Use caution when walking
backwards.
4. If needed, the jack can be lifted using the lifting bar (item #3 - if
equipped) or the lifting eyebolt(s) (item #17 - if equipped).
Note: Lifting bars are installed on short stroke PREM_060,
PREM_100 and PREM_150 Series models. Lifting bars are
not used on any long stroke models or on short stroke model
PREM_20016L.
All long stroke models are equipped with one lifting eyebolt.
The short stroke model PREM_20016L is equipped with two
lifting eyebolts. Lifting eyebolts are not present on short stroke
PREM_060, PREM_100 and PREM_150 Series models.
WARNING: Lift the jack using only lifting eyebolt(s) or
lifting bar. Never attempt to lift the jack by using the
handle assembly. The handle assembly is to be used
only for rolling the jack on its wheels and for positioning the jack
under the jacking point.
5. Using the handle assembly, adjust the jack position so that
the cylinder load cap is centered under the jacking point of
the load.
WARNING: Be sure that the jack is positioned on a
solid and level support surface, with the lifting cylinder
perpendicular to the ground. Jacking at an angle can
allow the jack to slip out of position, resulting in loss of load. As
required, use a swivel load cap to properly engage angled lifting
points. Refer to Section 5.7 for additional information.
5.0 OPERATION
5.1 Control Valve (See Figure 3)
Hydraulic flow to the lifting cylinder is controlled by a manual
4-way, 3-position valve.
• Move lever to the extend
position to raise the load.
• Move lever to the retract
position to lower the load.
• Move lever to the center neutral/
hold position immediately after
raising or lowering is completed.
Note: The neutral/hold position
is also referred to as the “idle”
position.
5.2 Pendant (See Figure 4)
PENDANT BUTTON
Figure 4, Pendant
The pump motor is controlled by
a single pendant mounted push
button.
Button pressed:
Motor starts. System pressure builds
and cylinder moves for as long as
button is held down or until cylinder
reaches end of stroke.
Button released:
Motor stops. Cylinder stop moving
and check valve holds load.
Note: if cylinder does not begin
moving when motor is started,
check that control valve lever is in
either the retract or extend position.
5.3 Circuit Breaker
A resettable circuit breaker is used on all jack models equipped
with a single-phase electrical system. This includes jack model
numbers beginning with PREMB, PREME and PREMI. The
circuit breaker reset button is mounted on the lower surface of
the jack electrical enclosure. See Figure 1, item 10 for location.
In the event of excessive current draw, the circuit breaker will
trip. After determining and correcting the source of the overload,
push the circuit breaker button to reset.
Note: Jacks equipped with a three-phase electrical system
have no circuit breaker button. These units use a resettable
motor overload relay that is mounted inside the jack electrical
enclosure. Refer to Section 6.5 for additional information.
EXTEND
(raise)
Neutral/Hold
Figure 3, Control Valve
RETRACT
(lower)
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