XASE1600 Gd
18
F
UEL
SYSTEM
The fuel filter assembly strains out water and impurities from the fuel.
The fuel is drawn from the tank through the fuel filters to the engine injec-
tion pump.
Only one third of the fuel drawn is used for combustion; the remnant is used
to cool the engine pump and is returned to the fuel tank via a fuel cooler.
The fuel coolers are located behind the grating at the right- and left-hand
side of the compressor.
Primary fuel filter
The fuel filter consists of an adapter head, a spin off filter element and a
waterseparator bowl.
Draining the primary fuel filter
1. Open the bowl drain valve (DC) and pump the water out.
2. Close the drain valve.
Replacing the primary fuel filter element
1. Drain the fuel from the bowl.
2. Remove the filter and separate the bowl from the element.
3. Apply a film of gas oil to the new bowl seal.
4. Screw the bowl to the new element tightly by hand.
5. Apply a film of gas oil to the new element seal.
6. Screw on the filter tightly by hand.
7. Open the head vent and operate the pump. Close the vent when the fuel
begins to purge.
8. Check for leaks, retighten if necessary.
Secondary fuel filter
Air vent
Close the valve near the secondary fuel filter before operating the fuel
priming pump.
Replacing the secondary fuel filter
The secondary fuel filter is of the spin-on type. To replace it proceed as fol-
lows:
1. Close the valve near the secondary fuel filter.
2. Remove the fuel filter by unscrewing it.
3. Screw the new filter in position.
4. Open the valve near the secondary fuel filter.
S
HUT
DOWN
SWITCHES
Compressor element air outlet temperature (S7, S8)
Test the switch by immersing its sensing element in hot oil. The contact of
the switch (S7, S8) must open at the pre-set temperature.
The setting of the switch can be adjusted by means of a slotted screw pro-
truding through the protecting glass of the temperature indicator scale
(TG).
The screw has a cap with two holes. A key, supplied with the machine, can
be applied through the holes in the slot to turn the screw until the switch
trips at the specified temperature.
Low fuel level (S37:1)
Test the switch by moving the float up and down. The contact of the switch
must open with the float in the lowest position and close by lifting the float.
Air filter vacuum switch
1. Stop the compressor. Disconnect the wires from the switch and remove
the latter with its coupling from the air intake chamber.
2. Fit the switch to a tee. Connect a vacuum gauge and a hose or pipe to
the tee.
3. Reconnect the wires to the switch and press the on/off push button.
4. Create a vacuum with the mouth through the hose, while observing the
vacuum gauge and the filter servicing alarm lamp. The lamp should
light up when the vacuum has reached the setting of the switch.
Replace the switch if it does not respond.
5. Reinstall the switch and reconnect the wires.
DC
Drain cock
1
Adapter head
FF
Fuel filter
2
Filter element
VP
Vent plug
3
Filter bowl
4
Hand-pump
DC
1
2
FF
VP
3
4
The valve near the primary fuel filter must be open
during normal operation.
The level switch has no setting device; replace it in
case of malfunctioning.
Test current not to exceed 1A at 24 V.
