# General Service and Maintenance Safety

- All maintenance and repair must be carried out by specialized personnel.

- The balance control circuit must be serviced or repaired by specialized personnel only.

- The interruption of air supply is necessary prior to any maintenance or repair. Arm should be positioned on the parking hook and the air supply shut-off vale must be closed, and the air must be exhausted from the pneumatic system.

- Air hose tubing should be replaced every 6 years.

## Checklist prior to maintenance or repair

1. Ensure the controller system is powered off.

2. Ensure arm is positioned on the parking hook.

3. Close the air supply lock-put valve to release residual pressure in the system.

4. PO check valve: press the manual pressure release button to release residual pressure inside the cylinder.

5. Verify that the pressure has been exhausted from the system by checking the gauge pressure located at the filter/regulator and after the precision regulator on the cylinder.

## Storage and Packaging

Prior to storage, the equipment must be cleaned, and anti-corrosion / rust inhibitor / lubrication should be applied to parts that can oxidize. Pack the equipment within a sealed polyethylene sheet packaging.

The storage area must be a closed and dry environment with a temperature ranging from +5 °C to +50 °C.