DX380LC-7
Inspection, Maintenance and Adjustment
4-10
•
Never mix lime (hard water), salt or water contained metal
material with coolant.
•
If a Doosan pure antifreeze is not available, the antifreeze
specification provided on the "Type of anti-freeze" page
must be used.
Filters
•
Filters are extremely important safety parts. They prevent
impurities in hydraulic oil, fuel and air circuits from causing
problems.
Replace all filters periodically. See details given in
"Lubrication and Service Chart" on page 4-14.
When working in severe conditions, replace filters at
shorter intervals according to oil and fuel (sulfur content)
being used.
•
Never try to clean filter (cartridge type) and use them
again. Always replace with new filters.
•
When replacing oil filters, check if any metal particles are
attached to oil filter. If any metal particles are found,
contact your DOOSAN distributor.
•
Do not open packages of spare filters until just before they
are to be used.
•
Always use DOOSAN genuine filters.