Doosan 7/26E, Operation And Maintenance Manual

Page: 58 / 90

54 OPTIONS
7/26E, 7/31E, 7/41
DESCRIPTION
The cold start option serves to improve starting conditions in winter
operation at ambient temperatures from -10°C to -30°C. For this
purpose the unit is equipped with an independent coolant heater.
SAFETY
Compressor
With regard to the possibility of the regulation system freezing at
ambient temperatures below 0°C, pay attention to the required warm
up time. Do not apply full load to the engine at ambient temperatures
below -10°C before completing the warm up time.
Coolant heater
The heater must not be operated in the following situations:
• In filling stations and tank stock.
• In places where explosive vapors or dust may build up (e.g. near
fuel, coal, wood dust or cereal stores).
• In enclosed rooms (e.g. garages), not even via the timer.
The heater must not:
• be exposed to temperatures of more than 120
°
C (storage
temperature), otherwise the electronics may suffer permanent
damage.
The heater must:
• be operated at the nominal voltage specified on the rating plate.
• be disabled by removing the fuse if smoke develops, if unusual
noises are heard or if there is a smell of fuel. The heater must not be
restarted until the unit has been checked by trained personnel.
• be operated at least once per month for 10 minutes, with the engine
cold.
• be inspected by a specialist at the beginning of the winter season
or earlier.
GENERAL INFORMATION
(differences for Cold start -30
°
C)
Compressor
Operating ambient temperature.-30
_
C TO +46
_
C (-22
_
F TO 115
_
F)
Oil capacity (7/26E), (7/31E)7,5 litres (2 US GAL)
Oil capacity (7/41)8,5 litres (2,25 US GAL)
LUBRICATING OIL SPECIFICATION
(for the specified ambient temperatures).
Above -30
°
C (-22
°
F)
Compressor - approved:
Mobil ATF SHC, SAE 10W
Engine - approved:
Mobil Delvac 1 5W-40, SAE 5W-30, API CD, CF, CF-4, CI-4
FUEL SPECIFICATION
-10
°
C to -20
°
C (14
°
F to -4
°
F
Required: EN 590: 1996 Grade 1
-20
°
C to -30
°
C (-4
°
F to -22
°
F
Required: EN 590: 1996 Grade 2
OPTION - COLD START for -30°C