Flotronic One-Nut - Page 11

Main Control Unit
The main control unit requires no maintenance, should a fault be suspected please
notify Flotronic Pumps Ltd who can advise the best course of action. It may be
necessary to return the item to Flotronic Pumps Ltd for investigation.
Test System Function
The system should be checked for proper function every 3 months or earlier if a
problem is suspected.
Sensor Check
1. Disconnect the power supply to the main control unit.
2. Switch off the air supply to the pump.
3. Unplug the sensors from the main control unit
.
4
. Unscrew the PTFE sensor housings from the air domes complete
with
sen
s
ors.
5
. Reconnect the sensors to the main control un
it.
6
. Reconnect the power supply to the main control unit.
7. Ensure the flat front face of the PTFE sensor housings are clear of any
obstructions that could be sens
ed.
8
. Reset the main control unit by pressing the Reset butt
on.
9
. The fail LED on the main unit should turn off with the power light remaini
ng
on.
10.
Place your hand close to the flat front face of one of the PTFE sen
sor
ho
usings. The main control unit should register a fault and the LED fault light
should illuminate.
11.
Repeat steps 7 to 9 for the other senso
r.
NO
TE:
If the main control unit fails to register a fault condition during the above tests, or it
constantly registers a fault condition please refer to the ‘Troubleshooting’ section at
the back of this manual or contact Flotronic Pumps Ltd for advice.