mcr-PROLIGHT
VENTS
,
TYPE
:
C,
E,
NG-A
O
PERATION AND MAINTENANCE MANUAL
Page 21 of 31
8.4. Mechanical control
The mechanical control system comprises of a lock and hydraulic-pneumatic actuators
(gas springs) joined by a lever with a cross piece in the base, and with the leaf. There are
3 lock types available:
1) Standard (without an electromagnet)
2) With an electromagnet triggered by electrical impulse (current flow)
3) With an electromagnet triggered upon power decay
Fig. 32 presents the standard lock variant (A) and
the variant with electromagnet (b),
accordingly.
a) Standard lock
b) Lock with electromagnet
Fig. 32 Lock types for mechanical control
The easiest way to distinguish between the standard lock and lock with electromagnet is to
check if it does (for lock with electromagnet) or does not (for standard lock) have an
enclosure. The type of lock with electromagnet can be further identified based on the
electromagnet power rating:
1) 3.5 W power - electromagnet triggered by electrical impulse (current flow)
2) 1.6 W power - electromagnet triggered by power decay
Electromagnet rating can be read from the identification label.
8.4.1. Lock opening methods
Mechanically controlled vents may be opened in three different ways, depending on the
option purchased:
1) Automatically, after the melting of a fuse element
2) Through the opening of an electromagnet
3) Manually, using a cord
The opening methods above are presented on fig. 33.
