Doosan HP900, Operation & Maintenance Manual

Page: 54 / 90

Maintenance Operating & Maintenance Manual
Book: 22846471 (3-09-07) Rev. B 53
Routine Maintenance
This section refers to the various components which require periodic maintenance and
replacement.
The SERVICE MAINTENANCE INTERVAL CHART indicates the various components’
descriptions and the intervals when maintenance has to take place. Oil capacities, etc., can
be found in the
GENERAL INFORMATION section of this manual.
For any specification or specific requirement on service or preventative maintenance for the
engine, refer to the
Engine Manufacturer’s Manual .
Compressed air can be dangerous if incorrectly handled. Before doing any work on the unit,
ensure that all pressure is vented from the system and that the machine cannot be started
accidentally.
If the automatic blowdown fails to operate, then pressure must be gradually relieved by
operating the manual blowdown valve. Suitable personal protective equipment should be
worn.
Ensure that maintenance personnel are adequately trained, competent and have read the
Maintenance Manuals.
Prior to attempting any maintenance work, ensure that:-
• All air pressure is fully discharged and isolated from the system. If the automatic
blowdown valve is used for this purpose, then allow enough time for it to complete
the operation.
NOTE: Pressure will always remain in the part of the system between the
minimum pressure valve and the discharge valve after operation of the
auto blowdown valve.
THIS PRESSURE MUST BE RELIEVED BY CAREFULLY:
a. DISCONNECTING ANY DOWNSTREAM EQUIPMENT.
b. OPENING THE DISCHARGE VALVE TO ATMOSPHERE.
(USE HEARING PROTECTION IF NECESSARY).
• The machine cannot be started accidently or otherwise, by posting warning signs
and/or fitting appropriate anti–start devices.
• Disconnect batteries.
Book:46623600 (10-12-2012) Rev. A