Doosan 7/71 - General Information

GENERAL INFORMATION
13
7/71, 12/56
COMPRESSOR
Actual free air delivery. 7,1 m
3
min
−1
(250 CFM)
(7/71)
Actual free air delivery. 5,6 m
3
min
−1
(200 CFM)
(12/56)
Normal operating discharge pressure. 7 bar (100 PSI)
(7/71)
Normal operating discharge pressure. 12 bar (175 PSI)
(12/56)
Maximum allowable pressure. 8,6 bar (125 PSI)
(7/71)
Maximum allowable pressure. 13 bar (190 PSI)
(12/56)
Safety valve setting. 10 bar (145 PSI)
(7/71)
Safety valve setting. 13,5 bar (200 PSI)
(12/56)
Maximum pressure ratio (absolute). 7,5 : 1
(7/71)
Maximum pressure ratio (absolute). 11,5 : 1
(12/56)
Operating ambient temperature.
Whisperised −10C TO +46C (14F TO 115F)
Standard −10C TO +52C (14F TO 126F)
Maximum discharge temperature. 120C (248F)
Cooling system. Oil injection
Oil capacity. 12,5 litres
(7/71, 12/56)
Maximum oil system temperature. 120C (248F)
Maximum oil system pressure. 8,6 bar (125 PSI)
(7/71)
Maximum oil system pressure. 13,0 bar (190 PSI)
(12/56)
LUBRICATING OIL SPECIFICATION
(for the specified ambient temperatures).
ABOVE −23C(−9_F)
Recommended: PRO−TEC
Approved: SAE 10W, API CF−4/CG−4
PRO−TEC compressor fluid is factory−fitted, for use at all ambient
temperatures above −23C(−9F).
NOTE: Warranty may be extended only by continuous use of
PRO−TEC and Doosan oil filters and separators.
No other oil/fluids are compatible with PRO−TEC.
No other oils/fluids should be mixed with PRO−TEC because the
resulting mixture could cause damage to the airend.
In the event that PRO−TEC is not available and / or the end user
needs to use an approved single grade engine oil, the complete system
including separator / receiver, cooler and pipework must be flushed
clear of the first fill fluid and new Doosan oil filters installed.
When this has been completed, the following oils are approved:
for ambient temperatures above −23C (−9F),
SAE 10W, API CF−4/CG−4
Safety data sheets can be obtained on request from your Doosan
dealership.
For temperatures outside the specified ambient range, consult the
company.
ENGINE
7/71, 12/56
Type/model. 4IRD5N
Number of cylinders. 4
Oil capacity. 9,0 litres
Speed at full load. 2300 revs min
−1
Speed at idle. 1700 revs min
−1
Electrical system. 12V negative earth
Power available at 2300 revs min
−1
59kW
Fuel tank capacity 118 litres
Oil specification Refer engine section
Coolant capacity 11,5 litres
FIXED HEIGHT RUNNING GEAR
Braked version
7/71, 12/56
Shipping weight. 1489kg (3300 lbs)
Maximum weight. 1600kg (3520 lbs)
Maximum horizontal towing force. 1492 kgf (3288 lbs)
Maximum vertical coupling load
(nose weight). 100 kgf (220 lbs)
VARIABLE HEIGHT RUNNING GEAR
Braked version
7/71, 12/56
Shipping weight. 1509kg (3565 lbs)
Maximum weight. 1600kg (3520 lbs)
Maximum horizontal towing force. 1492 kgf (3288 lbs)
Maximum vertical coupling load
(nose weight). 100 kgf (220 lbs)
WHEELS AND TYRES
Number of wheels. 2 x 5
1
/
2
J
7/71, 12/56
Tyre size. 7,50 14C, 185 R14
7/71, 12/56
Tyre pressure. 4,5 bar (65 PSI)
7/71, 12/56
Further information may be obtained by request through the
customer services department.