Zanotti un0 060, Workshop Manual

Page: 159 / 248

148
Electronics and wiring
5.3 Digital Sensors
Digital Input menu label: Water Temp
Alarm: AO7 - Water Temperature
Testing Procedure:
Put temperature switch into coolant or oil and heat fluid
test- ing sensor. Normally opened when temperature
rises above 107 − 113[°C] (225 − 235[°F ]) contact should
close.
Replacement:
For FTQ Temperature Switch Re- placement refer to 5.3.1.2
SAE Pressure Switches
Replacement:
For SAE Pressure Switch Replacement refer to 3.3.2.3
PMI Low Pressure Switch Specifications:
Specifications:
Circuit unipolar
State N.O.
Closes at < −0, 3barg (−4.35psig)
Reopens at > 0, 6barg (−8.70psig)
Connections:
Port-Pin by Wire
J10 − 10th NE1010
J8 − 2nd 95
Functions
Pressure Switch PMI trips when suction side pressure drops
below < −0, 3barg (−4.35psig) and A11 Alarm occurs
stopping unit, which automatically restart when pressure
rises above > 0, 6barg (−8.70psig).
Digital Input menu label: Low Pressure Switch.
Alarm: A04 - Low Pressure Switch