Figure 66 Emergency Bypass For The Door Interlock System - Carrier 69NT40-489-100 Series Operation And Service Manual

Venting the container when a power failure occurs
(this procedure should only be used in emer-
gency situations)
In case of a power failure to the unit, there is no
emergency provision to unlock the automatic door
interlock system:
DANGER
WHEN OVERRIDING THE CA CONTROLLER,
THE OPERATOR MUST BE AWARE OF THE
IMMEDIATE DANGER OF UNCONSCIOUS-
NESS AND DEATH. THE OPERATOR MUST
READ AND UNDERSTAND ALL WARNING
LABELS AND SAFETY INSTRUCTIONS BE-
FORE PROCEEDING WITH THE EMERGEN-
CY BYPASS PROCEDURE.
To enter the container in a true emergency situation, do
the following:
1 Ensure at least two persons are present. One person
is to act in a supervisory manner, and that person is
charged with the responsibility to ensure all proce-
dures are performed correctly and all waiting times
have expired before allowing entry.
2 Open the fresh air makeup vent 100% (fully open).
Avoid any direct breathing of venting gases from the
air makeup vent.
CONTAINER REAR DOOR VIEW
T-305

Figure 66 Emergency Bypass for the Door Interlock System

3 To enter the container, the interlock system must be
removed. To remove the system, remove the center
bolt from the catch or remove the four screws holding
the interlock system to the container door.
Low oxygen levels inside container. Venti-
late container before entering. Stay away
from doors while venting.
4 Fully open container doors.
5 Pull back the curtain (poly sheet) to accelerate the
time of a complete ambient air exchange.
6 Step away from the container rear doors. Do not
close doors. Wait 30 minutes prior to entry or unload-
ing of the container. Wait 45 minutes before climbing
on contents inside of the container.
7 If access to the container is necessary (i.e., life and
death situations) prior to the safety venting proce-
dures being performed, then: only rescue personnel
trained in safety procedures in removing victims
from hazardous atmospheres are to be allowed
entry into the container at this point.
8 All other personnel are to stay well clear of the doors.
REMOVE OR CUT
AS REQUIRED
114
WARNING