Servicing and cleaning
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Inspection procedures
Calibrate pressure sensors
The pressure sensors built into the portable fire pump are absolute pres-
sure sensors and are therefore subject to fluctuations in the atmosphere air
pressure (high difference, weather conditions etc.).
Before calibrating the pressure sensors ensure that the portable fire pump
is in a depressurised state (drain valve J7 and screw-down valves J10
open, engine not started).
Calibrate pressure sensors to the ambient pressure:
► Change to the display unit on Screen page 1 - function displays.
► Press Acknowledge error message (EN1) function switch for approx.
3 sec. .
The pressure sensors are calibrated to the ambient pressure.
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