Temperatures Of Touchable Hot Surfaces - Ultrawave Q Series Operator's Instruction Manual

Temperatures of touchable hot surfaces

BS EN 13202:2000
temperatures for different materials at various exposure times (see
below). Your Ultrawave ultrasonic bath can be set so that the cleaning
fluid is up to 70°C. This means that parts of ultrasonic bath will be above
the recommended maximum temperature.
If you operate
recommended maximum, the Ultrawave advise that you conduct a risk
assessment, and if appropriate fix a "Caution – Hot" warning label to your
machine.
The following limit values are based on the harmonised standards –
-
BS EN 13202:2000 Ergonomics of the thermal environment –
Temperatures of touchable hot surfaces – Guidance for establishing
surface temperature limit values in production standards with the
aid of
-
EN 563: 1994 Safety of machinery – Temperature of touchable
surfaces
-
Ergonomics data to establish temperature limit values for hot
surfaces
Material/time-temp*
Uncoated metals
Painted metals
Enamelled metals
Ceramics, glass, stone
Plastics
Wood
Time
1 sec
4 sec Parts held for short periods
10 sec Parts continuously held in normal use
10 min
8 hr
gives the recommended maximum
your ultrasonic
1 sec
65°C
83°C
74°C
80°C
85°C
110°C
Contact
Accidental contact
Prolonged use
Continuous
bath at temperatures
4 sec 10 sec
58°C 55°C
64°C 55°C
60°C 56°C
70°C 66°C
74°C 70°C
93°C 89°C
Outer case, tank flange
31
surface
above
10 min 8 hr
48°C 43°C
48°C 43°C
48°C 43°C
48°C 43°C
48°C 43°C
48°C 43°C
Part
Knobs, switches
Handles
Handles
Handles
the