Trox Technik X-CUBE X2 compact 2 Operating Instructions Manual page 8

Safety
Behaviour in an emergency > Emergency switch-off
Safety lock on inspection access doors to haz-
ardous areas
Fig. 4: Inspection access door lock
Inspection access doors to hazardous areas are
secured with a lock ( Fig. 4 /1) that can only be opened
with a special key ( Fig. 4 /2).
Motor protection switch
Motor protection switches are safety devices for
switching, protecting and isolating motors or actuators
on electric circuits. Motor protection switches protect
motors against destruction due to overload, short cir-
cuits, locking during start-up, or failure of a live wire
in three-phase systems. They also have a thermal trip-
ping mechanism and an electromechanic tripping mech-
anism (short circuit protection). The motor protection
switches are located in the AHU switch cabinet.
8
1.4 Securing the unit against being
switched on accidentally
Securing the unit against being switched on acci-
dentally
WARNING!
Risk to life from unauthorised people starting the
unit or from people starting the unit accidentally!
If someone who is not authorised starts the unit, or if
someone starts the unit accidentally, people could be
seriously or even fatally injured.
Before you switch on the unit, make sure that
– Nobody is inside the AHU
– All inspection access doors have been closed
– No tools or materials have been left inside the
AHU.
Fig. 5: Securing the mains isolator
1. Switch off the power supply to the AHU by turning
the mains isolator to '0'.
2. Secure the mains isolator with a padlock ( Fig. 5 ).
3. Keep the key in a safe place.
4. Cover the mains isolator with a notice informing
people that work is in progress.
1.5 Behaviour in an emergency
In an emergency, observe the following points
1.5.1 Emergency switch-off
Switch off the mains isolator and secure it

against being switched on accidentally,
1.4 'Securing the unit against being switched on
accidentally' on page 8 .
Raise the alarm.

If there is no risk to your own health, rescue other

people from the hazardous area.
AHU X-CUBE X2 compact 2
WARNING!
Electric shock hazard!
The power cable which connects the AHU to
the mains holds electrical charges even after
power is turned off.
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