Operation and Maintenance Manual
– SCD Smoke Dampers
Version 1
Date 04 2018
Page 45 of 81
Due to the way of start-up there are four
types of AK boxes:
HA
– manual start-up
HEA
– manual and electric start-up
HPA
– manual and pneumatic start-up
HEPA
– manual, electric and pneumatic
start-up
Rys. 23. AK alarm boxes.
Technical Data:
•
Maximum operating pressure 80 bar,
•
Nominal NW valve size 4 mm,
•
Nominal NW pin size 2 mm,
•
Operating temperature range -250C to +500C,
•
Electromagnet nominal voltage 24 V DC,
•
Electromagnet nominal current 0.29 A DC,
•
Electromagnet operating time 100%,
•
Minimum trigger pressure for HPA/HEPA version 5 bar.
The full marking of AK box also contains information about the number of cylinders with
CO
2
for opening and for closing, housing colour, box height and a handle for additional
cartridge.
The full marking includes the following elements: AK 1 0. x
– yy - …. - R
Where:
AK
– alarm box
1
– number of cylinders with CO
2
for opening
0
– number of cylinders with CO
2
for closing
X
– box height
yy
– housing colour (RT – red, OR – orange)
….. – way of start-up (HA, HEA, HPA, HEPA)
R
– fixture for an additional cartridge.
