Husqvarna DXR300, Operator'S Manual

Page: 23 / 60

English
– 23
SAFETY INSTRUCTIONS
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
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.
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.
NOTICE! There is an increased risk of overheating in warm
environments. Both the machine’s hydraulic system and
electronic components can be damaged.