30
REMKO GPS series
7) Check of the safety thermostat(s)
The check must be carried out in the unit heating
mode.
- Heat up the thermostat probe with a hot air gun
or other suitable means until the alarm F2 is issued.
- Let the thermostat probe cool down and reset
the unit again.
- This check should be carried out on all existing
unit thermostats.
8) Check of the ionisation current
Carry out the inspection with a tester that is capable
of detecting microampere values with DC.
- Interrupt power supply to the unit.
- Disconnect cable from the flame monitoring unit and
connect to the minus terminal of the tester.
- Connect a cable from the positive terminal
of the tester to the flame monitoring unit.
- Switch on the unit again and measure the ionisation
current.
The value of the ionisation current must exceed 2
microamperes (µA).
Lower values are a sign of poor positioning, oxidised
electrodes or the presence of a defect.
Ionisation
monitoring electrode
Flame monitoring
unit
(GPS board)
Micro
ammeter
µA
s
s
s
We reserve the right to modify the dimensions and design as part of the ongoing technical development process.
NOTE
Regular care and maintenance, at the latest after
every heating period, is the basic requirement for
a long service life and malfunction-free operation
of the units.
NOTE
Adjustment and maintenance work may only be
carried out by authorised and qualified technicians.
Replacement of the control board
If it is necessary to replace the control board
of the GPS unit, perform the following steps:
1) Unscrew the screw on the board housing and take
off the housing cover
2) Undo all plugs and cable terminals of the GPS
board and remove cables
Housing coverScrew