APT MHC 5, Руководство по безопасности и эксплуатации, Страница: 14 / 20

MHC 5
14 (doc no.)
SAFETY & OPERATING INSTRUCTIONS
Quick-release couplings
The original hydraulic hoses are fitted with Flat-Face
quick-release couplings that are strong and easy to
clean. The quick-release couplings are fitted so that
the male connection supplies oil and the female
connection receives oil.
NOTICE Wipe all couplings clean before
connecting. Ensure that couplings are clean and
correctly engaged before operation. Failure to do so
may result in damage to the quick couplings and
cause overheating and cause foreign matter to enter
the hydraulic system.
Hydraulic oil
In order to protect the environment, Atlas Copco
recommends the use of biologically degradable
hydraulic oil. No other fluids must be used.
♦
Viscosity (preferred) 20-40 cSt.
♦
Viscosity (permitted) 15-100 cSt.
♦ Viscosity index Min. 100.
Standard mineral or synthetic oil can be used. Make
sure to only use clean oil and filling equipment.
When the machine is used continuously, the oil
temperature will stabilise at a level which is called
the working temperature. This will, depending on
the type of work and the cooling capacity of the
hydraulic system, be between 20-40°C (68-104°F)
above the ambient temperature. At working
temperature, the oil viscosity must lie within the
preferred limits. The viscosity index indicates the
connection between viscosity and temperature. A
high viscosity is therefore preferred, because the oil
can then be used within a wider temperature range.
The machine must not be used, if oil viscosity fails
to remain within the permitted area, or if the
working temperature of the oil does not fall between
20°C (68°F) and 70°C (158°F).
Pressure adjustment
The maximum pressure of the power source is
important. The pressure created in case of an
incorrectly or unfitted return line coupling would
cause overloading. Which could harm the machine
and result in bodily injuries. The maximum pressure
of the power source is 160 bar (limited by safety
valve adjustment).
WARNING Operating pressure
If the maximum operating pressure for the hydraulic
machine is exceeded, it can result in material damage
and personal injury.
► Always run the hydraulic machine with the correct
operating pressure, see "Technical data".
► Only readjust the pressure relief valve (torque
control) on the machine according to procedure
and values described under maintenance. Note
that higher settings might lead to a higher torque,
which could harm the machine and result in
serious injury or death.
Water flushing
For diamond bit core drilling, water flushing is
required. Mount the water swivel and water hose
on the core drill as follows.
The water can be supplied directly from a source,
or a separate water kit can be used. A separate water
kit with pressure tank is available, see the spare parts
list.
Drill bit
Choosing drill bit
A correct drill bit is a condition for good operation.
To avoid unnecessary machine damage, it is
important to choose drill bits with a high quality.
3392 5192 90a | Original instructions 14
COR 5, 15 Safety and operating instructions