Installation and application – Armstrong World Industries ACUM185 User Manual
Page 25
AR-EXP-CUMMINS-07-00
OWNERS MANUAL
Item
Units
Type of Operation and Application
60 Hz
50 Hz
Prime
Standby
Prime
Standby
Engine
Rated Speed
rpm
1800
1500
Gross Engine Output
bhp (kWm)
285 (213)
317 (237)
245 (183)
272 (203)
BMEP
psi (kPa)
248 (1710)
276 (1902)
213 (1470)
237 (1632)
Mean Piston Speed
Ft/s (m/s)
26.57 (8.1)
22.30 (6.8)
Cooling Sys-
tem
Ambient Air Temperature
°F (°C)
122 (50)
Engine Heat Reject to Coolant
BTU/min (kW)
4250 (74)
4725 (83)
4090 (72)
4420 (78)
Coolant Capacity
Gal (L)
3.25 (12.3)
Standard Thermostat Range
°F (°C)
180-203 (82-95)
Maximum Pressure Cap
Psi (kpa)
10 (69)
Maximum coolant friction
Psi (kpa)
5 (35)
4(28)
Fuel
System
Maximum fuel flow
gal/h (L/h)
55 (208)
Fuel Type
Diesel #2
Fuel Consumption @ 25% Power
gal/hr (L/hr)
3.39
3.77
2.89
3.21
Fuel Consumption @ 50% Power
gal/hr (L/hr)
6.78
7.55
5.78
6.42
Fuel Consumption @ 75% Power
gal/hr (L/hr)
10.18
11.32
8.67
9.63
Fuel Consumption @ 100% Power
gal/hr (L/hr)
13.57
15.09
11.56
12.83
Air Require-
ment
Combustion Air Flow
ft
3
/min (L/s)
610 (289)
666 (314)
425 (200)
465 (220)
Air Intake Restriction clean filter
In.H
2
O (kPa)
10(2.49)
Air Intake Restriction dirty filter
In.H
2
O (kPa)
25 (6.22)
Exhaust Temperature
°F (°C)
886 (474)
920 (493)
1037 (553)
1059 (571)
Maximun Allowable Back Pressure
In.H
2
O (kPa)
3 (10.13)
Lubrication
System
Maximum oil temperature
°F (°C)
250 (121)
Oil Pan Capacity
gal (L)
5.0 (18.9)
Total Engine Oil Cap. w/filter
gal (L)
6.3 (23.8)
Oil Filter Type
Cartridge
Lube oil specifications grade
SAE 15W - 40
Engine Elec-
tricals
Battery Charging Alternator
Volts, Ground
12V, negative
Baterry Charging Alternator
Rated amps
55
Recommended Battery Cold
Crank
CCA amps
1200 / 0 °F – 18 °C
Starter Motor
Volts, Ground
12V, negative
Operation
Temperature and Altidtude Losses
%
For 1800 RPM: 4% per 1000 ft (300 m) and 3.3% per 10°F
(6% per 10°C)
For 1500 RPM: 4% per 1000 ft (300 m) and 8.3% per 10°F
(15% per 10°C)
A C U M 2 1 0
INSTALLATION AND APPLICATION