Hydraulic Connections - Enerpac PMB-1 Manual De Instrucciones

4.0 HYDRAULIC CONNECTIONS

Check all hydraulic hoses to be sure
CAUTION:
that fittings and couplers are tight and leak free.
Check hose positions to be sure the hoses are
located to avoid damage during press operations. Tighten
danger.eps
all connections fully, but not excessively.
4.1 Single-Acting Cylinders (See Figure 4)
1. Connect the gauge adaptor to the outlet port of the
pump or valve.
2. Attach the gauge to the NPTF gauge port on the
gauge adaptor.
3. Connect the 3/8 street elbow to the outlet port of the
gauge adaptor.
4. Attach the male threaded end of the hydraulic hose to
the 3/8 street elbow.
5. Attach the coupler of the hydraulic hose to the mating
coupler on the single-acting cylinder.
NOTE: Make sure all couplers are completely engaged.
Figure 4. Hydraulic Connections for
Single-Acting Cylinders
4.2 Double-acting Cylinders (See Figure 5)
1. Connect the gauge adaptor to the appropriate outlet
port (refer to following note) of the 4-way valve
mounted on the pump. The ports are labeled as
follows:
A - Pressure Port - Advance
B - Return Port - Retract
NOTE: For pushing - place the gauge in the advance
hydraulic line.
For pulling - place the gauge in the retract hydraulic
line.
2. Attach the gauge to the NPTF gauge port on the
gauge adaptor.
3. Connect the 3/8 street elbow to the outlet port of the
gauge adaptor. Connect the second 3/8 street elbow
to the remaining port of the 4-way valve.
4. Attach the male threaded end of the two hydraulic
hoses to the 3/8 street elbows.
5. Attach the coupler of the advance hydraulic hose
to the mating coupler on the double-acting cylinder
nearest the base end (A).
6. Attach the coupler of the retract hydraulic hose to the
mating coupler on the double-acting cylinder nearest
the plunger end (B).
NOTE: Make sure all couplers are completely engaged.
5.0 PRESS BED ADJUSTMENT
5.1 10 & 12 Ton Models
Figure 5. Hydraulic Connections for
Double-Acting Cylinders
To raise or lower the press bed, lift the bolster so that its
weight no longer rests on the bolster pins. Pull out the
bed pins, located below the bolster. Raise or lower the
bolster to the desired height and re-install bolster pins
below it.
5.2 25-200 Ton Models
Raising (and Lowering) the Press Bed
WARNING: Keep hands away from the press bed/
bolster and frame when repositioning bed/bolster with
lifting jack.
the
WARNING: Remove all items from the press bed/
danger.eps
bolster before raising or lowering bed/bolster.
1. To raise the press bed, open the release valve on the
danger.eps
lifting jack and pull the plunger down to fully extend
the jack. (If lowering the press bed, push jack plunger
up until fully retracted).
2. Slide chain into the lifting hook on press bed as
shown in Figure 6. Install clinch pin (50, 100, 150 and
200 ton models only).
4
A
B