Sig Marine Sig100, Руководство по эксплуатации и установке

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7. Walbro Fuel Pump Installation
When installing a Walbro fuel pump you must ensure it is mounted
approximately at the level of the valve on the heater. These pumps can
“pull” fuel but have trouble “pushing” fuel so it must be gravity fed from the
pump to the heater. The lift and the climate will then indicate if you need the
standard pump (part#15078) or the heavy duty pump (part#15078-1). We
highly recommend the heavy duty pump for all installs so you have the
option of adjusting the pressure if needed.
The standard pump Walbro’s FRD-2 part# 15078 is a 12v DC pump with a
pressure of 3psi. It is for a standard installation where the climate is fair and
fuel run from the fuel supply to the pump is less then approx. 4ft vertical and
15ft horizontal.
The heavy duty pump part# 15078-1 is Walbro’s FRD-2 12v DC pump with
a factory retrofitted pressure spring and an adjustable pressure regulator
installed for a higher pressure pump for a heater installation in a colder
climate and where the fuel run from the fuel supply to the pump is higher
then approx. 4ft vertical and 15ft horizontal. This pressure regulator will
adjust the pressure higher or lower to the oil metering valve.
*If using the heavy duty fuel pump part# 15078-1, the adjustable pressure
regulator attached has a thread size of 1/8” NPT. It is soft die cast aluminum
so use caution when connecting the fittings. The numbered settings are only
for reference because depending on the fuel supply installation and the
climate will depend on the pressure of each setting. Disconnect the fuel line
at the valve and allow the pump to push the air out of the fuel line to see a
constant flow of fuel going into a bucket. Set the regulator to the lowest
setting. Watch the flow of fuel. Adjust the regulator setting until there is a
constant flow of fuel pouring into the bucket. If you have adjusted the
regulator to the highest setting with still no constant flow of fuel, the
regulator can be adjusted. Pierce a hole in the sticker on the center of the
knob with a 5/64
th
Allen wrench and turn the adjusting screw clockwise ½ a
turn.
To prime the pump, pump fuel into a container to remove all the air in the
fuel lines. After a cup of fuel has been pumped, reconnect fuel line to the
valve. If there is no fuel getting to the pump or there’s air in the fuel line the
pump can make a chattering noise.