CUMMINS ED-3 Manual de instalación descargar pdf (Pagina 17)

Natural Gas Generator Set Installation Manual-GF Series

Doc. 17855, Rel. 03/2014

3-3

type. The electric valve should be wired so that the

valve is closed when the genset is off.

The recommendations in Cummins Application

Manual T-030 should be followed in regard to fuel

supply system pipe sizes, manual shut-off valves, fuel

filters, and gas pressure regulators.

3.2.3 Fuel Supply Pressure

WARNING

High gas supply pressure can cause gas leaks

which can lead to fire and severe personal injury

or death. Gas supply pressure must be adjusted

to Specifications by qualified personnel.

For propane (vapor withdrawal) and natural gas, the

maximum permissible fuel supply pressure is 5.0 kPa

(20 in WC) and the recommended minimum is 3.7

kPa (15 in WC).

For propane (liquid withdrawal), the maximum per-

missible fuel supply pressure is 2,153 kPa (312 psi)

under any operating condition.

WARNING

Gaseous fuel leaks into an inadequately venti-

lated space can lead to explosive accumulations

of gas. Natural gas rises when released into the

air and can accumulate under overhanging hoods

and inside housings and buildings. Propane

sinks when released into the air and can accumu-

late inside housings, basements and other below-

grade spaces. Precautions must be taken to

prevent gas leaks and the accumulation of

gaseous fuel in the event of a leak.

3.2.4 Check Gas Leaks and Correct

All fuel-system connections, including the container

with associated valves and fittings, must be tested for

leaks with a soap and water solution or equivalent,

while the system is under pressure.

3.2.5 Fuel Heater (Optional-MOH models only)

PECO fuel heaters are available on some MOH

models. They are designed to provide heating of

engine fuel for optimal performance of the Genset.

The PECO Fuel Heater is designed to provide unin-

terrupted fuel flow in cold temperature environments

when it is needed most. Factory Fuel Heater requires

power source to be wired. See owner’s manual for

instructions.

3.2.6 Regulator (Optional)

Prime regulators are available on some models for

fuel pressure reduction from source. Regulators vary

by manufacturer and model. Check with your distribu-

tor or service technician for details on use and set-

tings of your Regulator. Factory Regulator requires

no further installation at site, connect fuel supply.

3.2.7 Fuel Filters (Optional-MOH models only)

Our in-line fuel filters are designed for optimal perfor-

mance of the generator set. They provide the best

choice for Customers who want to extend service

intervals and increase Genset uptime. Optional pres-

sure indicators and automatic drains are available on

some models. Check the installation and service

manuals for your specific filter (models vary by unit)

for details. Factory Fuel Filter require no further

installation at site, connect fuel supply.

3.3 Battery Selection

The minimum recommended reserve capacity (SAE

RC) and cold cranking ampere (SAE CCA) values for

a particular engine can be found on the Model spe-

cific Genset specification sheet is provided with the

genset (visit www.cumminsnpower.com for genset

specifications). RC and CCA definitions can be found

in SAE Standard J537. All battery information is for

lead/acid batteries.

3.3.1 Battery Requirements

For battery replacement information, refer to Figure

3-1. Batteries may be supplied by Cummins Distribu-

tion as an option, or may be supplied by the cus-

tomer.

Figure 3-1 Series Battery Connection - 24 VDC

NG-00045

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 66 67

Comentarios a estos manuales

Sin comentarios

CUMMINS ED-3 Manual de instalación Pagina 17

Comentarios a estos manuales

Relacionado con productos y manuales para Generadores De Poder CUMMINS ED-3