Liebherr R 995 - Manual (Page 4)

4 TD R 995 Arctic Litronic
Low Temperature Package
Electrical Preheating prior to Engine
Start
Power supply __________________ integrated generator set,
external alternative via socket
Electrically driven warm
air blowers
______________________ engine compartment,
main valve compartment
Electrically driven water
heater units
____________________ engine block and radiator,
fuel system and battery box,
operator’s cab,
cab elevation,
grease containers
Electrical oil heater units __ main and slew pumps,
suction tube for hydraulic oil
24 V resistor heating ________ electrical boxes,
operator’s seat and joysticks
Features of the Electrical Preheating
System
Gen-set __________________________ low temperature version,
installed in the machinery house
Safety IT-System ______________ isolated ground,
monitoring of:
– short circuit
– overload
– isolation
system reactions:
– warning (acoustical/optical)
– shut down
Battery charge ________________ continuously during standstill
24 V board network __________ continuous power supply
Accessory parts ______________ additional alternator to ensure 100 %
lighting and heating,
additional battery pack for emergency
lighting
Stand-by Heating Operation
Long-time shut down
period of excavator
__________ continuous heating to predefined tempera-
ture
Heated areas __________________ operator’s cab,
cab elevation,
valve bank compartment,
engine compartment
Heated components ________ engine and splitter box,
main pumps,
batteries,
electrical boxes and joysticks,
grease pumps and control valves
Hydraulic Circuit
Elements continuously
flushed after engine start
__ main valves and piloting system,
slewing motors,
rotary connection,
travel motors,
track tensioning units
Low temperature
materials
________________________ hoses,
seals
Steel Construction
Low temperature
adaptation
______________________ cryogenic steel for structural components,
threaded bolts for main steel structure
connections
Operator’s Cab
Design ____________________________ increased thermal insulation
Heating system ________________ heating capacity adapted to arctic condi-
tions,
warm air blowers for front and side
windows,
heated operator’s seat, minimum tempera-
ture inside the operator’s cab during stand-
still + 15 °C/+ 59 °F
Controls __________________________ electrical boxes and joysticks equipped
with 24 V electrical heating elements
Insulation
Thermal insulated
components
____________________ complete power pack,
main control valve compartment,
hydraulic tank module,
fuel tank and cab elevation,
engine coolant expansion tank,
generator compartment,
battery compartment,
cab roof,
grease containers
Closed carbody
openings
________________________ power pack inlet/outlet,
oilcooler inlet/outlet
Central Lubrication System
Design ____________________________ thermal insulated grease containers,
large nominal width for all grease lines
Heated components ________ heat exchanger in both grease containers