Oldham MX 52, Installation Manual

Page: 15 / 48

- 15 -
2
2
.
.
S
S
W
W
I
I
T
T
C
C
H
H
I
I
N
N
G
G
O
O
N
N
2.1.
CHECKING THE INSTALLATION
It is accepted as a minimum that all connections have been made and that the complete
installation complies with standards currently in force.
ATTENTION
The compliance of the complete electrical safety system is not OLDHAM’s responsibility
The MX52 facility can be made live using trip switches* which are provided for this purpose
and which protect the mains supply.
* the trip switches will be selected on the basis of the consumption figures provided by the
manufacturer and of the length of the electrical cables.
2.2.
SWITCHING ON THE FACILITY
ATTENTION
The procedures and adjustments described in these paragraphs are reserved strictly for
authorized persons since they may jeopardize detection safety.
The MX52 facility is switched on by :
-
pivoting the front panel
-
pressing the ON / OFF button located at the bottom left of the FRONT circuit :
see Fig.4 and fig.26 (ref A)
-
the following then appears on the display…for example
The facility then goes into SETUP for 1 minute. Hence, for those channels which are in
service all the alarms are disabled and the output currents are 1 mA. The facility also performs
a self-test* of its buzzer and of all the LEDs. After the minute has elapsed the channels in
service are set into normal operation and the associated alarms and relays become effective.
*The user can do a “manual self-test” by pressing the TEST key at any time (Fig.26)
This self-test lasts 20 seconds and the following may appear alternately on the display, for
example :
THEN
The user can be stop the self-test cycle early by pressing the CLEAR key.
MX52 V2.0
***SELF-TEST***
xx LEL CH4
MX52 V2.0
Xx LEL CH4
Line corresponding to the channel displayed when
the ENTER key is pressed