External Environmental Factors - Husqvarna DXR140 Operator's Manual

External environmental factors

Temperature
The ambient temperature, both heat and cold, affects the
machine's operational reliability. Temperature variations
also have an impact as they produce an increased risk of
condensation forming in the machine's tank.
Heat
NOTICE! There is an increased risk of overheating in
warm environments. Both the machine's hydraulic
system and electronic components can be damaged.
The maximum working temperature for hydraulic oil is
90°C (194°F). Overheating results in deposits forming in
the oil, leading to increased wear, damaged seals and
leakage. Overheated hydraulic oil provides poor
lubrication, resulting in inferior performance.
To avoid overheating:
• Keep the machine clean, in particular its cooler.
• Ensure that there is good ventilation when working
indoors.
• Radiant heat can cause local heating that damages
parts of the machine. Screen off vulnerable
components.
• Additional cooling is required if the ambient
temperatures is over 40°C (104°F). Supply the
machine with forced cooling using compressed air.
To avoid damage to the machine:
• Change hydraulic fluid and filters more frequently.
• Check the machine's seals to prevent dirt in the
hydraulic system due to broken seals.
• Rubber caterpillar tracks must not be exposed to
temperatures of over 70°C (158°F). In hotter
environments steel tracks have to be used.
SAFETY INSTRUCTIONS
Cold
Do not use maximum pump pressure if the hydraulic fluid
is less than 10°C (50°F). Allow the machine to warm up
slowly. Warm up the lower section by running the
caterpillar tracks, first slowly and then more quickly with
the outriggers extended. Move the upper section back
and forth and operate all cylinders in the arm system
without load. The machine is ready for use when its
temperature (hydraulic fluid) has risen to around 40°C
(104°F).
Moisture
When working in damp environments the operator should
ensure that electrical components, connectors for
example, are not submerged in water.
The machine must never be driven to such a depth in
water that it reaches up to the machine's equipment. The
equipment can be damaged and the machine can be live,
resulting in personal injuries.
Dust and particles
Dust and particles can block the machine's cooler, cause
overheating and increase wear on the machine's bearings
and shafts. Clean and lubricate the machine regularly.
The hydraulic system is extremely sensitive to
contaminants. Small particles can cause breakdowns and
increase wear in the components.
There is a high risk of contamination in conjunction with
servicing and repairs when the hydraulic system is
opened.
Contamination of the hydraulic system can be
prevented by:
• Keeping the machine clean, particularly before
servicing, repairs or changing tools.
• Carrying out daily inspections.
• Carrying out regular servicing.
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English 23