©
CIAS Elettronica S.r.l.
Ed. 2.4
6.
MAINTENANCE AND SERVICET
6.1 Fault
Finding
In case of false alarms, verify that the parameters set during installation and recorded on the
Commissioning Sheet are still correct and appropriate and that any variations have not
exceeded the stated limits, shown in the “Alignment and Configuration” section (4 and 5).
Fault
Possible Cause
Possible Solution
Voltage high and/or low
Check power supply and battery
voltage
BF Oscillator Fault Tx
Replace Tx circuit
MW Oscillator Fault
Replace Tx cavity
Tx or Rx faults
Replace circuit
Fault Led off
Disqualification one or more IR
Check IR
Movement or obstacles in the
protected area
Check that the protected area is clear
of obstacles and/or people moving
Barrier
mis-aligned
Refer to section 4.1.2 points
a,b,c,d,e,f,g,h,i,j and 5.2 5.3 for the
Infrared
Alarm Led off
Incorrect channel selection plus
infrared alarm
Re-acquire channel section 4.1.2
point j and check infrared alignment
Heads
mis-aligned
Refer to section 4.1.2 points
a,b,c,d,e,f,g,h,i,j
Obstacles in the protected area
Remove obstacles
Transmitted signal insufficient
Check transmitter
Circuit Fault
Replace receiver
High VRag
Microwave Receiver Fault
Replace Microwave detector
Micro switch open
Check switch is closed
Tamper Led off
Tilt switch in wrong position
Check position
6.2 MW Service Kit
The service kits comprise the processing circuit and all the microwave parts. Replacement is
very simple.
Changing circuit boards and cavities on either the transmitter or the receiver can change
the orientation of the barrier and therefore it is essential to re-align the barrier after
substitution. Therefore it is necessary to acquire the field signal value and the channel
number as described in section 4.1.2
Installation Manual
Page
54
of
56
PYTHAGORAS
