Enerpac Pow'r-Riser PR-Serie Bedienungsanleitung Seite 8

Jack Model
1 inch
[25 mm]
PREM_06014L
PRU11
PREM_06027L
PRU11
PREM_10016L PRU11
PREM_10027L PRU11
PREM_15016L PRU151
PREM_15027L PRU151
PREM_20016L PRU201
PREM_20027L PRU201
Note: Fifth letter of model will be B, E, I, G, W, J or R, depending on jack electrical confi guration.
5.8 U-Ring Stacking Instructions
Pow'r-Riser U-Rings (optional accessories) allow positive
mechanical load holding of a lifted load. The U-Rings are placed
on top of the cylinder housing and around the extended cylinder
rod. They are available in fi ve diff erent lengths for each Pow'r-
Riser model.
To help ensure proper alignment and installation, the top surface
of the cylinder housing and the top surface of each U-Ring
contains a raised locator. The bottom surface of each U-Ring
contains a mating recess.
The U-Rings are made of steel and aluminum. A steel U-Ring
must always be positioned at the top and bottom ends of the
U-Ring stack. The aluminum U-Rings must always be located
in the middle of the stack, between the two steel U-Rings. This
stacking arrangement helps prevent damage to the aluminum
U-Rings.
CAUTION: Never position an aluminum U-Ring at the
top or bottom end of the U-Ring stack.
Install U-Rings as described in the following steps:
1. Using the jack, raise the load to the desired lifting height.
Refer to the instructions in Section 5.5 of this manual.
2. Place one steel U-Ring on top of the cylinder housing,
around the extended cylinder rod.
3. As required, place one or more aluminum U-Rings on top
of the steel U-Ring, around the extended cylinder rod.
The quantity of aluminum U-Rings to be installed will vary,
depending on jack model, lifting height and the U-Ring set
being used. Refer to Table 7 for additional information.
4. Place a second steel U-Ring at the top of the U-Ring stack.
IMPORTANT: Be sure the arrow on each U-Ring is pointing up.
Be sure all locators are fully engaged in the mating recesses of
the U-Rings.
WARNING: Pinch point hazard: In the following step,
keep hands and fi ngers clear of area between load
support ring and top of U-Ring stack.
5. Slowly lower the cylinder rod until the weight of the load
is supported by the U-Rings. Refer to the information in
Section 5.5 for jack operating instructions.
IMPORTANT: Follow all applicable work rules and regulations
in eff ect at your facility or worksite. The use of auxiliary stands,
blocking or other additional load supports may be required even
when U-Rings are installed.
Table 7 - U-Ring Information
U-Ring Size and Model Number
3 inch 4-1/2 inch 5-1/2 inch
[76 mm] [114 mm] [140 mm]
PRU13 PRU14 -
PRU13 PRU14 -
PRU13 PRU14 -
PRU13 PRU14 -
PRU153 - PRU155
PRU153 - PRU155
PRU203 - PRU205
PRU203 - PRU205
(See Figure 6)
U-Ring
Set Model
10 inch
Number
[254 mm]
- PRUS126 PRU11
PRU110 PRUS137 PRU11
- PRUS126 PRU11
PRU110 PRUS137 PRU11
- PRUS1526 PRU151
PRU1510 PRUS1537 PRU151
- PRUS2026 PRU201
- PRUS2037 PRU201
Locator (on each
U-Ring and at
top of cylinder
housing)
Steel U-Ring
(bottom)
Load
Cap
Load
Support
Ring
Assembled View
Figure 6, U-Ring Stacking Arrangement (typical)
8
Items Included in Each U-Ring Set
2x 1x 2x
PRU13 PRU14
PRU13 PRU14
PRU13 PRU14
PRU13 PRU14
PRU153 PRU155
PRU153 PRU155
PRU203 PRU205
PRU203 -
Steel U-Ring
Aluminum U-Rings
(top)
Recess of U-Ring
1x 4x
- -
PRU110 -
- -
PRU110 -
- -
PRU1510 -
- -
- PRU205