Verifying The Door Position; Icing Indication And Alert Light - Biddle MAT Installation, Operation And Maintenance Manual

O
PERATION
door indicator light
icing alert light
(white) (optional)
30

4.2.3 Verifying the door position

You can verify the position of the door by the door indicator
light: it turns on as soon as the door is opened slightly. It will
turn off only when the door is entirely closed.
n
Note:
When you have closed the door, always verify that the
door indicator light is off.
Otherwise, the MAT air curtain will not stop working in
separation mode.

4.2.4 Icing indication and alert light

The time that the MAT has been in separation mode without
defrosting is indicated by the triangle symbols in the control
panel display.
When all triangles are full, the icing-up is supposedly at is
acceptable maximum. Then the icing alert light (optional) turns
on also. At this time you should close the door to allow
defrosting.
c
Caution:
Allow the MAT air curtain to defrost at least when all tri-
angles are showing and/or the icing alert light turns on.
Too much icing-up will disturb the working, and may also
damage the air curtain unit(s).
C S A C
OLD TORE IR URTAIN