Replacement Part List

G4-276 (48RCLB) 7/18b
Application Data
Cooling
Radiator System 60 Hz 50 Hz
Ambient temperature, _C(_F)
45 (113)
Radiator system capacity, including
engine, L (gal.)
21.3 (5.6)
Engine jacket water flow, Lpm (gpm) 131 (34.6) 109 (28.8)
Heat rejected to cooling water at rated
kW, dry exhaust, kW (Btu/min.)
48 (2730) 44 (2500)
Water pump type Centrifugal
Fan diameter, mm (in.) qty. 3 @ 356 (14)
Fan power requirements (powered by
engine battery charging alternator)
12VDC, 18 amps each
Operation Requirements
Air Requirements 60 Hz 50 Hz
Radiator-cooled cooling air,
m
3
/min. (scfm)[
62.2 (2200) 62.2 (2200)
Air over engine, m
3
/min. (cfm) 31.1 (1100) 31.1 (1100)
Combustion air, m
3
/min. (cfm) 5.5 (195) 4.6 (162)
[ Air density = 1.20 kg/m
3
(0.075 lbm/ft
3
)
Fuel Consumption]
Natural Gas, m
3
/hr. (cfh) at % load 60 Hz 50 Hz
100% 24.8 (875) 21.5 (759)
75% 20.3 (717) 17.6 (622)
50% 14.5 (512) 12.6 (444)
25% 8.7 (307) 7.5 (266)
LP Gas, m
3
/hr. (cfh) at % load 60 Hz 50 Hz
100% 9.3 (329) 8.1 (285)
75% 6.5 (231) 7.1 (251)
50% 4.9 (172) 4.2 (149)
25% 3.1 (110) 2.7 (95)
] Nominal Fuel Rating: Natural gas, 37 MJ/m
3
(1000 Btu/ft
3
)
LP Vapor, 93 MJ/m
3
(2500 Btu/ft
3
)
LP vapor conversion factors:
8.58 ft.
3
=1lb.
0.535 m
3
=1kg.
36.39 ft.
3
= 1 gal.
Sound Enclosure Features
D Sound-attenuating enclosure uses acoustic insulation that
meets UL 94 HF1 flammability classification and repels
moisture absorption.
D Internally mounted critical silencer.
D Skid-mounted, aluminum construction with two removable
access panels.
D Scratch- and corrosion-resistant Kohlerr cashmere
powder-baked finish.
Sound Data
Model 48RCLB sound levels are 57 dB(A) during weekly engine
exercise and 61 dB(A) during normal operation.
All sound levels are measured at a distance of 23 ft. (7 m) from
the generator set. Actual sound levels may vary based on
installation parameters.
RDC2 Controller
V oltage: 240 V
Freq: 60.0 Hz
The RDC2 controller provides integrated control for the
generator set, Kohlerr Model RXT transfer switch,
programmable interface module (PIM), and load shed kit.
The RDC2 controller’s 2-line LCD screen displays status
messages and system settings that are clear and easy to read,
even in direct sunlight or low light.
RDC2 Controller Features
D Membrane keypad:
d OFF, AUTO, and RUN pushbuttons
d Select and arrow buttons for access to system
configuration and adjustment menus
D LED indicators for OFF, AUTO, and RUN modes
D LED indicators for utility power and generator set source
availability and ATS position (Model RXT transfer switch
required)
D LCD screen:
d Two lines x 16 characters per line
d Backlit display with adjustable contrast for excellent
visibility in all lighting conditions
D Scrolling system status display
d Generator set status
d Voltage and frequency
d Engine temperature
d Oil pressure
d Battery voltage
d Engine runtime hours
D Date and time displays
D Smart engine cooldown senses engine temperature
D Digital isochronous governor to maintain steady-state speed
at all loads
D Digital voltage regulation: ±1.0% RMS no-load to full-load
D Automatic start with programmed cranking cycle
D Programmable exerciser can be set to start automatically on
any future day and time, and to run every week or every two
weeks
D Exercise modes
d Unloaded exercise with complete system diagnostics
d Unloaded full-speed exercise
d Loaded full-speed exercise (Model RXT ATS required)
D Front-access mini USB connector for SiteTecht connection
D Integral Ethernet connector for Kohlerr OnCuer Plus
D Built-in 2.5 amp battery charger
D Remote two-wire start/stop capability for optional connection
of a Model RDT transfer switch
See additional controller features on the next page.