Replace PIR on Gardtec 350

[Doug789654]

Hi All

Hoping you can help me with this little task...

I have a broken PIR detector on my Gardtec 350 alarm. The screen that goes over the actual sensor is missing. I have a Honeywell sensor to replace the existing one.

I can identify the alarm + and - wires and the power + and - wires on the old detector, but the two tamper wires are not identified on the old detector. Does it matter which way the tamper wires are connected?

Will I be able to just disconnect the wires and reconnect on the new detector with the system up and running? Or should I remove all power (mains and control panel battery) and do it whilst the alarm is going off from it's own backup battery?

Thanks in advance,

Doug

 

[Alarm Engineer]

Best to do it powered down, just remove the aux 12v fuse or disconnect power wires in panel to prevent outside siren ringing. + - like for like, the tamper pair can go any way round as can the alarm pair. You must just make sure you identify which is the alarm/tamper terminals on the old and new sensors and follow suit (sometimes these are identified by a sticker in the lid of the sensor)

Walk test after to make sure it works.

 

[Doug789654]

Best to do it powered down...

...Walk test after to make sure it works.

Thanks for this advice. The alarm, power and tamper pairs are obvious so that won't be a problem

Thanks, Doug

 

[Doug789654]

Follow up question...

When the cover is taken off the PIR or the control panel opened should the alarm do something? It currently does nothing...

Thanks

Doug

 

[Alarm Engineer]

Lol.... yes it should do something! Like go into tamper, internal sounders & keypads sound, message on keypad to inducate tampering. I would check that the panel lid tamper switch is operating correctly, the detector tamper circuit may be incorrectly wired which is more common.

 

[Doug789654]

Changed the PIR ok, and it flashes red when something moves under it.

The alarm won't test though, as soon as you start the test it goes a bit crazy and goes off.

Think I'll give up on it!

Thanks for your help!

 

[Alarm Engineer]

Ok, if walk test is not going as expected, try setting the system then triggering the new sensor. If the alarm triggers then job done.