41
Mount fixtures
Product Support:
iv. Be sure the locks control valve is closed. Open the
RAISE
valve for five seconds and then
close it. This fills the lift cylinders with oil.
v.
Loosen the crosshead support collars so that they can slide along the columns (use hex-bit
socket and ratchet wrench). Allow them to rest on the top of the guide plate.
vi. Unclamp the crosshead - open the locks control valve by rotating it counterclockwise.
Caution
Do not leave the crosshead unclamped for longer than 30 minutes.
vii. Open the
LOWER
valve until the crosshead lift cylinders are fully retracted and then close
the
LOWER
valve.
viii. Open the
RAISE
valve to raise the crosshead approximately 50 mm (2 in) from the fully
retracted position and then close the
RAISE
valve.
ix. Clamp the crosshead - be sure to fully close the locks control valve.
x.
Adjust the crosshead support collars on the columns so that they are in contact with the
bottom of the crosshead (use hex-bit socket and ratchet wrench). Secure the crosshead
support collars to the columns. Tighten the cap screws to the torque specified in
(use hex-bit socket and torque wrench).
xi. Loosen the setscrew (5,
) in each lift block (4) (use 4 mm hex key).
xii. Open the
LOWER
valve and allow the lift cylinder extensions (1) to drift down until each
retaining ring (6) is exposed. Note: Due to variation in the hydraulic components, the
cylinders will not retract at the same rate; this is normal operation. Close the
LOWER
valve.
xiii. Remove each retaining ring (6) from its upper notch (use 4 mm hex key).
xiv. Install each retaining ring in its lower notch. Be sure that a flat area of the retaining ring is
facing outward, so that the setscrew will seat on the flat area.
xv. Open the
RAISE
valve until each retaining ring is fully seated in its lift block. Tighten each
setscrew. Close the
RAISE
valve.
xvi. Go to step
to continue crosshead adjustment.
2.
Start the system; see page 32.
Start the HPS.
3. Be sure that the hydraulic cylinder is fully retracted.
4. Verify that both lift control valves are closed.
5. Be sure the locks control valve is closed. Open the
RAISE
valve for five seconds and then close it.
This fills the lift cylinders with oil.
6. Loosen the crosshead support collars so that they can slide along the columns (use hex-bit socket
and ratchet wrench). Allow them to rest on the top of the guide plate.
7. Unclamp the crosshead - open the locks control valve by rotating it counterclockwise.
8. Open either the
RAISE
or
LOWER
valve until the crosshead is in the desired position and then close
the valve.
9. Clamp the crosshead - be sure to fully close the locks control valve.
When you open the locks control valve:
•
The crosshead will move up slightly. This is normal operation and is not a cause for concern.
•
The HPS builds to maximum pressure. The noise level of the HPS increases. The noise level will
decrease once it has built enough pressure for the lift cylinders.
