USER GUIDE
KRM-1 & KRM-2
7 (8)
Produal Oy
Keltakalliontie 18, 48770 Kotka FINLAND
Tel: +358-10-219 9100 / Fax: +358-5-230 9210
www.produal.com
Information is subject to change without prior notice.
Behaviour of the alarm relay and fault relay and displays, plus reset options
Valid with
software 0020
Smoke alarm
Device failure / missing detector
Alarm relay,
connectors
11/12/13
Drops out
Drops out
Alarm relay,
connectors
14/15
Drops out
Drops out
LED
Alarm / Reset
Lights up
Lights up
LED failure
Does not light up
Lights up
Alarm reset or
failure reset
With power interruption, alarm button or
with terminal 9 / 10 provided that sensing
chamber is free.
With power interruption, alarm button or with
terminal 9/10 provided that sensing chamber is free
+ disturbance has ceased.
MAINTENANCE AND REPAIR
In order to ensure good performance over a longer period of time the smoke alarms must be tested at least once a
year. Without maintenance, and depending on environmental conditions, the sensor will become dirty sooner or later,
and after a certain time will trigger an alarm, which is a false alarm.
NOTE:
All types will give a specific maintenance requirement signal at a contamination level of 70 % (display flashes,
relay contamination drops out). There is a contact available for this “contamination” signal (terminals 16/17), and it
should be connected to the automation station. From a 70 % contamination level or higher the smoke sensor must be
changed.
Maintenance and repair procedure
If, due to operational specifications short term shutdowns cannot be tolerated, measures must be taken to prevent this;
if necessary by placing a bridge over the alarm contact, but remembering to remove it after completion of the service
work. After maintenance work, a complete functionality test must be carried out. If defects have appeared they must
be removed immediately.
Before opening the housing, turn off all supply voltages – The housing may only be opened by a qualified
electrician. Supply and switching voltages must be observed.
1.
The smoke detector is accessible by removing the cover.
2.
By turning the white detector on the base by about 20° to anticlockwise the sensor can be unscrewed. If it is too
dirty (indicator >70 %), and no later than the prescribed standard of exchange cycles, the sensor must be
removed and exchanged for a new sensor.
3.
If necessary, clean the cover, measuring tube and the inner housing.
4.
Check the electrical connections, possibly tightening the terminals. Make visual inspection and clean the
electrical circuit board if necessary, as well as the inner housing. Check all seals.
5.
Assemble all parts.
