Hitachi 210313 manual Maintenance, Corrosion Protection, Shutdown

Carefully monitor your fluid supply. If your pump us running too fast, or accelerates quickly, it is probably out of fluid. Shut off the hydraulic power supply imme- diately to prevent damage to the pump. If the fluid supply is empty, and air has entered the fluid lines, be sure to prime the pump again before regular operation.

Flush the pump frequently enough to prevent the fluid from drying or settling in the pump and hoses to pre- vent costly damage. Use a compatible solvent. Refer to the Technical Data in the separate displacement pump manual for a list of the wetted parts.

If you are pumping water-base fluid, first flush with water and then with a compatible solvent.

Corrosion Protection

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

CAUTION

To help prevent corrosion of the pump, never leave the pump filled with water or water-base fluids, or air during non-use. After flushing, flush the pump again with a compatible solvent, such as mineral spirits, relieve the pressure, and leave a coating of solvent in the pump and hoses..

Shutdown

WARNING

To reduce the risk of serious injury whenever you are instructed to relieve pressure, always follow the Pressure Relief Procedure on page 8.

Always stop the pump with the displacement rod in the down position. This prevents fluid from drying on the displacement rod and damaging the packings when the pump is restarted. Relieve the pressure whenever you shut off the pump.