Operation and Maintenance Manual
– SCD Smoke Dampers
Version 1
Date 04 2018
Page 58 of 81
•
SG actuators are suitable for connecting to the control panels delivered by Smay
sp. z o.o. When connecting actuators to control panels of other companies pay
attention to compatibility. Connect the actuators via the connection socket. Using
traction load is compulsory. When selecting the cable length take into account
installation of the connection socket and the range of the actuator turn.
•
When mounting the actuators at the height exceeding 2.5 m use appropriate
devices in order to avoid personal risk (possible injury or crush).
•
Nominal diameter of the cable between the connection socket and the control
panel shall be selected so that the voltage loss between the control panel and the
actuator at full load does not exceed 1 V (see the control panel documentation). In
case of control by means of other control panels choose a professional electric
company to check the cable dimensioning.
•
Permissible nominal voltage for actuators control is 24 V- with +30/-20% tolerance.
At the same time peak voltage may not exceed 32 V, with maximum residual
pulsation of 48%. Before installation in the smoke damper, the actuators must be
totally pulled in (internal built-in switches); slip them in if necessary (for example
powering them by means of a battery).
•
Before activation, e.g. with the use of batteries (service life and installation or
maintenance and repair works), install a fuse, rated the same as the nominal
current, in the power line. In this case avoid simultaneous connecting all actuators
to the control panel. Ignoring this instruction may result in damaging the power
outlet of the control panel.
•
Pay attention to obstacle-free actuator leaning during the entire feed.
•
Only the ventilation push button, with a return lock and a single-speed zero
position, is designed for actuators control.
•
Direct switching the feed direction is forbidden. Ignoring this instruction may result
in damage (required time out is about 1 s).
Rys. 43. Control switch diagram.
After complete feed or slip in, connect the actuator for about 1 s in the opposite
direction, before it will be connected once again in previous direction.
5.2.3. CONTROL PANEL
The main purpose of the control panel is to control electric actuators of smoke
ventilation systems. The smoke extraction is a priority function. The control panel makes it
possible to carry out this function by manual or automatic activation, after emergency signal
from a fire detector of SAP system has been received (the alarm can be reset by means of
SAP). Moreover, they can carry out the ventilation function, in manual or programmable
mode. The control panel can interoperate with an external weather station, therefore
automatic damper closing is possible, when the weather is bad.
The control panels are equipped with batteries, which maintain emergency power
supply.
CORRECTLY!
control switch with neutral middle position, stable middle
position | automatic return to the neutral position
neutral position
OPEN
CLOSE
OPEN
CLOSE
normal switch without neutral middle
position
WRONG!
damage
hazard