Hyd-Mech DM-1215, Use And Maintenance Manual

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3 − 7 23 Safety and accident prevention
plant short-circuit protection by means of rapid fuses, earthing of all plant
parts connected with work as well as all foreseeable accidental contact; a ther­
mal-magnetic overload cutout switch shuts down the motor;
protection from accidental start-up by a minimum voltage relay in case of
power failure.
Emergency devices
In accordance with Standard
EN 60204 − 1:
2010:
Chapter 5 Section 6 Sub − section 1 “Emergency stop device” : «the emergency
stop device immediately stops all the dangerous and other functions of the ma-
chine»;
chapter 6 Section 2 Sub − section 4 Point 7 “Protective guards”:
«the removal of
protective guards designed to prevent access to dangerous parts or zones causes the
machine to stop immediately; replacing the guards does not restart the functions,
which must be reset».
...Emergency devices applicable to the DM-1215:
1. Emergency stop : a non-return mushroom-head pushbutton, colour red on
yellow background, is located on the control panel of the machine. To release
the pushbutton, the actuator must be rotated 45°. After the emergency situa­
tion has been resolved, the machine must be reset.
2.
Automatic thermal-magnetic cutout switch with thermal-magnetic relay:
the machine auto switch, located on the control panel, has two protection sys­
tems against voltage drops. In the case of a voltage drop, all electrical compo­
nents are disengaged, the machine stops immediately, and automatic restart
when the power supply returns is inhibited. Another function is that of reset­
ting the thermal relay provided to protect against overcurrents.
3.
Pressure contact for monitoring blade tension:
the machine stops immedi­
ately if the blade breaks or if the tensioner cylinder pressure drops.
4. Protective guard for blade: a coded key microswitch is operated if the blade
cover is accidentally or intentionally opened during the machine operating
cycle, immediately shutting down all functions.
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