Chapter 3: Operation
38 M47-17041-EN
• A torque wrench (supplied)
• A ratchet wrench with 3/8 in square-drive
Recommended procedure
1. Start the system; see page 34. Start the HPS.
2. 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 frame base.
3. Place the Locks switch in the Unlock position.
4. Place the Lifts switch in the Up or Down position to move the crosshead to the desired position.
Release the switch to stop crosshead motion.
5. Place the Locks switch in the Lock position.
6. 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 a torque of 68 N-m (50 lbf-ft) (use hex-bit socket and torque
wrench).
7. Normal operation can now resume.
Do not attempt to use the Jog controls to operate the hydraulic cylinder until approximately 1 minute has
passed. This allows the HPS to build enough pressure to clamp the crosshead lock cylinders. The noise
level of the HPS is a good indication of when this occurs; the noise level will decrease once it has built
enough pressure and the crosshead lock cylinders are clamped.
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