Operation Under Unusual Conditions - Doosan DX700LC Operation And Maintenance Manual

OPERATION UNDER UNUSUAL
CONDITIONS
NOTE: See "Maintenance
page 4-93 for other recommendations.
Operation In Extreme Cold
If machine is to be operated in extreme cold weather
temperatures, certain precautions must be taken to assure
continued normal operation. The following paragraphs detail
checks to be made to be certain the machine is capable of
operating at these temperatures.
1. Check the cooling system for correct antifreeze solution for
lowest temperature expected. Carefully inspect cooling
system and correct or report any leaks.
2. Keep batteries fully charged to prevent freezing. If water is
added to batteries, run engine at least one hour to mix
electrolyte solution.
3. Keep engine in best possible mechanical condition to
assure easy starting and good performance during
adverse weather conditions.
4. Use engine oil of the proper specifications for the expected
temperatures. Refer to the "Lubrication Specifications" of
the engine manual for details.
5. Keep fuel tank full at all times. Drain condensation from
tank before and after operation. Drain and service fuel
filter. To eliminate clogging of fuel filters due to wax crystal
formation in the fuel, be sure that the fuel used has a cloud
point specification below the lowest expected temperature.
6. Lubricate entire machine according to "Periodic Service
Table and Chart" Section 4, in this manual or lubrication
chart on machine.
7. Start engine and allow it to reach normal operating
temperature before applying load.
A. If mud and ice collects and freezes on any of the
moving parts while machine is idle, apply heat to
thaw the frozen material before attempting to operate
machine.
B. Operate hydraulic units with care until they have
reached a temperature to enable them to operate
normally.
C. Check all machine controls and/or functions to be
sure they are operating correctly.
8. An extra outer air filter should be kept in the operator's
cabin to replace element that could become iced and
cause restricted air flow to engine.
9. If cold weather starting aid must be used, see "Engine
Starting" COLD WEATHER START portion of this manual.
10. Clean off all mud, snow and ice to prevent freezing. Cover
machine with tarpaulin if possible, keep ends of tarpaulin
from freezing to ground.
Operation
3-42
in Special Conditions" on
OP001122