Giersch RG30 - Measuring Ionisation Current; Servicing Air Pressure Monitor

26
E.04.99 • G. 13.11.07
Service instructions/dimensions
Measuring ionisation current
The ionisation current must be measured during bur-
ner start-up and maintenance or after a fault indication
in the control box.
Measurement of ionisation current shortly after burner
start during:
• Maintenance
• Start-up
• Fault indication.
The ionisation current can also be read out as a
percentage via SatroPen.
To do so:
• Open plug connection between cable to control box and cable from ionisation electrode.
• Connect ammeter in series. Measuring range 0...200 µA DC.
l > 2 µA - OK
l < 2 µA - Unsafe operation !
- Clean burner pipe
- Bend ionisation rod in flame area
- If necessary, replace combination electrode
- If necessary, reverse polarity on ignition transformer (induction current)
- Eliminate moisture and deposits.
Servicing air pressure monitor
• Detach silicone connecting hose and clean, check
switching function.
• Replace air pressure monitor if switching function is
no longer O.K.
To do so:
• Switch burner voltage-free
and disconnect (7-pin connector X11).
• Unscrew cover.
• Disconnect electrical connectors.
• Release retaining screws on motor.
• Reassemble in reverse order.
“+” denotes the connecting point for
pressure metering connection !