Operating instructions

47
M
M
a
a
i
i
n
n
t
t
e
e
n
n
a
a
n
n
c
c
e
e
,
,
T
T
r
r
o
o
u
u
b
b
l
l
e
e
s
s
h
h
o
o
o
o
t
t
i
i
n
n
g
g
&
&
R
R
e
e
p
p
a
a
i
i
r
r
s
s
Measuring the fuel quantity
leuf fo ytitnauQretaeH
Desired Maximum Minimum
HYDRONIC M8
Diesel / FAME
5
.7 ml/
68 sec
6
.27 ml/
68 sec
5
.13 ml/
68 sec
HYDRONIC M10
Diesel
7
.5 ml/
6
8 sec
8
.25 ml/
6
8 sec
6
.75 ml/
6
8 sec
HYDRONIC M12
Diesel
7.5 ml/
68 sec
8.25 ml/
68 sec
6.75 ml/
68 sec
Preparing for the measurement
(Sketch 4)
• Disconnect the fuel pressure line at the heater and place the
end in a measuring cylinder (size 25 ml).
• Switch on the heater, if the fuel discharges uniformly and
free of bubbles, the fuel pipe is filled and vented.
• Switch off heater and empty measuring cylinder.
Measurement
• Switch on heater and wait until the metering pump stars pum-
ping the fuel.
•
During the measurement, hold the measuring cylinder at the
level of the heater.
After 68 sec. the pumping of the fuel is automatically switched
off.
• Switch off heater, as otherwise it will start up again.
• Read off the quantity of fuel in the measuring cylinder.
Note: Only carry out the fuel measurement if the battery is
sufficiently charged. During the measurement the volt
age applied to the control box should be at least 11 volt
or 23 volt and max.
13 volt or 25 volt.
Evaluation
Compare the measured quantity of fuel with the values in the
follo
wing table.
If the measured quantity of fuel is above the maximum value or
below the minimum value, the metering pump must be
replaced.
Sketch 4