Onan JB Series - Specifications; General Unit Specifications; Engine Details; Capacities and Requirements

• • • • • • • • ••
SPECIFICATIONS
For any abnormalities in operation, unusual noises from engine or
generator, loss of power, overheating, etc., contact your ONAN
dealer.
GENERAL
Nominal.dimension of set (inches)
'Height
...........•........•..... '. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . 26-1/2 (673 mm)
Width
...................•......... '. ........... ..........•.. ......... ......... . 18 (457 mm)
Length
...... ' ...............•....••........................•..•...........•..... 32-11/16 (838 mrn)
Weight (nominal)
...........•......•.... '............................................... 480 (218 kg)
ENGINE DETAILS ~
Number cylinders (vertical inline) ................................................................. 2
Displacement (cubic inch)
.................... '. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . .. 60
Cylinder bore' ............................... ' ......................................... 3..,1/4 (82.5 mm)
Piston'stroke
.. . ...... .. .•.. . .•.. . ... . ... ... . .. .. .... .. . . .. ... . ... .•... ...... . ..•... 3-5/8 (96 mm)
RPM (for 60 hertz) ................. ' ................................. :. . . . . . . . . . . . . . . . . . . . . . . .. 1800
RPM (for so hertz) ..... ' ..... , ................................................................. 1500
Compression ratio
............. ~ ............................ '. . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6.5:1
Compression ratio gas or LPG ............................. ' .............. ; ...............•.... 9.2:1
Exhaust connection (pipe tapped) .................. .............................. 1-1/4"(31.8 mm)
Governor, Internal Flyball, External Adjustment '
.. , ............................................... Yes
Centrifugal start-disconnect
switch. . . . . . . . .. . . .. . .. . . . . .. . . . .. .. . . . .. . . .. . . ... . .. . . . .. . . . .. . . .. Yes
CAPACITIES AND REQUIREMENTS
Battery. voltage (AC set). . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .. 12 volt
Battery size", ,
'
.. SAE.group tH .. " ..... ; ................................................ '. i Two in Series
Amplhr;SAE:rating - 20 hr. (nominal) ........................................................ *74
,
.,Startingbystarting motor with solenoid shi.ft andover-:-run clutch ..•............•.. : ........•... ; Yes'
Battery charge', rate amperes
................. ; .................•................................ 2-5
Charge ammeter scale
....... ' ....................•.... ' .......... ' ...... : .............. ~ . .. . . .. 5-0-5
*Oil Capacity in U.S. quarts - Refill. .............. ; . . .. . . . . . . .. . .. .. .. . . .. .. . .. .. .. .. .. .3 (2.84 litre)
Ventilation Required (cfm 1800 rpm)
Engine (Pressure Cooling)
................................................. : .... 520(14.7 m3/min)
Engine (Vacu-Flo Cooling)
..................................................... :., 610 (17.3 rna/min),
Generator
.................... '. . . . . . . • . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . 126,(3.6 m
3
/min) .
Combustion
..................... '............................................... ,32 (0.9 m
3
/min)'
GENERATOR
Output rated at unity power factor load .............................................. ~ . ; . . .. 1 phase,
Output rated at 0.8 power factor load. . . • . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . .• . . . . . . . . . .. 3 phase
Rating (output in watts)
50 hertz AC - General Utility
.............................. '.' .........•........... : ...•. , . .. 6000
60' hertz AC - General Utility ........ ' .............. .' ... ' ................................ ' ..... 7500.
Revolving field type generator
.........•... , ................................................... ' ... Yes,
120/240
voJt Single phase model reconnectible .........•........................................ Yes
Br~ad range 3-phase, 12 lead reconnectible ................................................... Yes
Solid state voltage regulator
•................ ' ................... ; .......................... ' ... Yes
Brushless Exciter
... , .. '. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . .. Yes
Mobile or outdoor~operation during ambi,ent temperatures belowQoF (-17-.8°C). use 105 amp/hrrating.
* - Plus 1/2 quart (0.47 litre) for new filter.
2