Owner's manual

Series 322 Load Unit Maintenance

Load Unit: Daily Inspections

Before the start of each day’s testing, do a quick inspection of your load unit.

Following are typical things that should be checked daily:

• Ensure that there are no leaks from lifts or locks.

• Ensure that there are no leaks from the actuator, hydraulic service manifold,

servovalve, or accumulators.

• Ensure that electrical connections are tight, with no frayed or poorly routed

cables.

• Ensure that hoses are routed properly and fittings are not leaking.

Load Unit: Clean the Columns

The crosshead locks can not securely clamp the crosshead to dirty or greasy

columns. You will need Ethanol and lint-free cloths to perform this procedure.

The crosshead can slide down the columns.

Crosshead cleaning takes place in a crush zone where pinched fingers and

crushed hands can occur.

Do not position yourself in a crush zone. Always lock the crosshead after moving

it. Always turn off hydraulic pressure before cleaning the columns. Wait two

minutes for pressure to bleed off before starting work.

1. Ensure that the crosshead is locked.

2. Using a clean, lint-free cloth, clean the exposed surfaces of the columns

with Ethanol.

3. If your load unit does not have hydraulic crosshead lifts, skip ahead to the

next step. If your load unit has hydraulic crosshead lifts, complete the

following steps:

A. Turn on system electrical power.

B. Apply high hydraulic pressure to the load unit.

4. If there is a specimen in the load unit, remove it.

5. Unlock and move the crosshead to expose the uncleaned section of the

columns.

6. Lock the crosshead.

7. If hydraulic pressure has been turned on, turn it off. Wait two minutes for the

pressure to bleed off before going on to the next step.

8. Clean the remaining sections of the columns.

WARNING