Velp Scientifica
– UDK139 Operating Manual
10004762/B5
42
5.
Operating Controls
5.1.
Safety devices, signals and warnings
5.1.1. Safety devices
The instrument is equipped with various safety devices that can prevent start-up or
interrupt a work-cycle to protect the operator and the instrument itself
.
Test tube:
If the test tube is not correctly positioned analysis will not start when START is
pressed. An acoustic signal warns the operator of an error and the following warning
message appears on the display for a few seconds:
“AL3. Insert test tube”
.
If an attempt is made to remove the test tube during a work cycle an acoustic signal
warns of the danger, the above warning message appears and the work cycle is
interrupted.
Safety guard:
If the safety guard in front of the test tube is not closed analysis will not start when
START is pressed. An acoustic signal warns the operator of an error and the
following warning message appears on the display: "
AL4. Close protection
".
If the safety guard is opened during a work cycle an acoustic signal warns of the
danger, the above warning message appears and the instrument continues the work
cycle in progress.
Safety lever:
If the lever is not released, analysis will not start when START is pressed. An
acoustic signal warns the operator of an error and the following warning message
appears on the display:
"AL5. Release lever"
.
If the lever is lowered accidentally during a work cycle, an acoustic signal warns of
the danger, the above warning message appears and the instrument continues the
work cycle in progress.
Safety guard + Safety lever:
If during the work cycle the safety guard is not closed and the handle is not released,
an acoustic signal warns of the danger and the display shows the message
"AL14.
Close safety guard. Release lever."
automatically blocking the work-cycle.
These safety devices are active throughout analysis.
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