Carbolite ABA 7/35B - Manual (Page 18)

18 MF60 – 1.04
When the door is open power to the main chamber elements are automatically cut off. If a fault
occurs then one or both of the red warning lamps above the door on the left (see Fig 5.1.2) will
light up. These warning lamps should be tested daily by pressing the test switch on the lower
mains switch panel (see Fig 5.1.1) when the door is closed and no test is running.
The door open warning indicator in the header bar of the main menu screen (Screen-View
5.2.1) will appear red if the door is open or the lock is not properly fastened.
5.2.1 Screen-view: Door open warning
The door locked indicator (Screen-view: 5.5.1) shows that the door is locked after a test has
started.
If either or both of the shock risk warning lamps (Fig 5.1.2) light up when the
door is open, do not load or remove a sample. Samples may be removed if
the power is first turned
‘Off’. Contact a Carbolite approved service
engineer immediately.
The door lock is automatically controlled but has an override key, the lock is on
the right hand side of the ABA case. Ensure that the key override has been correctly left in the
‘locked’ position after installation.
If the door lock is unlocked when a test is started the test will fail to start and a continuous
warning tone will be emitted along with a warning screen indicating that
“The door has failed to
lock”. The door must be locked before the test can be started.
If the door is unlocked during a test a continuous warning tone will be emitted along with a
warning screen indicating that
“The door should be closed and locked immediately”. This
warning should not be ignored; failure to do so may result in serious injury. The test will
continue when the door is once again locked.
Door Lock will operate under the following conditions:

when the ABA is disconnected from the power supply the door is locked

when the illuminated furnace power switch (Fig 5.1.1) is switched on the door normally
unlocks

If however there has been an interruption in a running test, for example by a power cut
or the ABA being switched off, the door lock remains locked when the ABA is once
again switched on. To unlock the door, the test must be cancelled using the test cancel
code (see section 7.7) .

at the start of a test the door locks automatically

at the end of a test the door unlocks automatically