Doosan HP900, Operation & Maintenance Manual

Page: 62 / 90

Maintenance Operating & Maintenance Manual
Book: 22846471 (3-09-07) Rev. B 61
Electrical System
WARNING
!
Always disconnect the battery cables before performing any
maintenance or service.
Inspect the safety shutdown system switches and the instrument panel relay contacts for
evidence of arcing and pitting. Clean where necessary.
Check the mechanical action of the components.
Check the security of electrical terminals on the switches and relays i.e. nuts or screws loose,
which may cause local hot spot oxidation.
Inspect the components and wiring for signs of overheating i.e. discolouration, charring of
cables, deformation of parts, acrid smells and blistered paint.
Battery
WARNING
!
Always disconnect the battery cables before performing any
maintenance or service.
Keep the battery terminals and cable clamps clean and lightly coated with petroleum jelly to
prevent corrosion.
The retaining clamp should be kept tight enough to prevent the battery from moving.
Pressure System
At 3 month intervals it is necessary to inspect the external surfaces of the system (from the
airend through to the discharge valve(s) including hoses, tubes, tube fittings and the separator
tank, for visible signs of impact damage, excessive corrosion, abrasion, tightness and chafing.
Any suspect parts should be replaced before the machine is put back into service.
Tire Pressure
See the GENERAL INFORMATION section of this manual.
Book:46623600 (10-12-2012) Rev. A