Installation and use
COMPUTER XP805
30
8. Troubleshooting
In the event of a computer malfunction, perform the simple checks below to check
whether repairs are needed.
If the problem still remains after carrying out the suggested checks, contact your local
dealer or
MC elettronica
Technical Service.
PROBLEM
CAUSE
SOLUTION
CO
M
PUTER
The Computer
does not switch on
a. The power cable is
disconnected
a. Check the power
cable
b. Blown fuse
b. Replace the fuse
The amount of
product distributed
is not constant
a. The pump is constantly
controlled in <+> or in
<->
b. Speed is not constant
c.
The litres/minute are
not constant
a. Decrease the set
"dP" parameter
b. Check the electric
connections and the
mechanic position of
the speed sensor
c.
Check the electrical
connections of the
flowmeter sensor and
make sure the rotor is
clean and has no
clearance (see Par.
7.2.1
“
Maintenance of
the flowmeter sensor
”
on page 28) or make
sure the pressure
sensor is clean and
the connections are
implemented
The data relative to
L/min and L/ha are
not reliable
a. Incorrect nozzle colour
selected
b. Check calibration of the
flowmeter sensor
c.
Incorrectly programmed
pressure sensor
a. Reset the nozzle
colour used
b. See Par. 5.6 on page
28
c.
See Chap.
5
Programming
”
