Bühler technologies GAS 222.20-HT Guía Rápida página 9

GAS 222.20-HT, GAS 222.20-HT-OW-OR
Electric strength test
This unit is equipped with extensive EMC protection. Testing
the electric strength will damage electronic filter components.
The necessary tests of all assemblies required to be tested
were carried out at the factory (test voltage 1 kV or 1.5 kV de-
pending on component).
To check the electric strength again yourself, only do so on the
respective individual components.
• Disconnect / unplug all components (see pin assignment
in the appendix).
• Now perform the electric strength test against earth.
WARNING
Fire hazard / gas emanation
Device damage when heating probe to > 280 °C
Heating the probe > 280 °C can damage the seals, cables and
the heat insulation. This can cause gas leaks or a fire.
Never heat the probe to temperatures > 280 °C.
The probe may be heated to max. 280 °C via the probe regu-
lator at a maximum ambient temperature of 45 °C. When ex-
ceeding a probe temperature of 300°C, the attached regulator
will shut off the probe (=> no heat output). The display will
read "Error". In this case, disconnect the power supply for the
probe and send the unit to the manufacturer for service.
Model GAS 222.20-HT-OW-OR:
These probes have controllable, adjustable heating. The con-
troller is not included. The supply voltage is 115 V AC, 50/60 Hz
or 230 V AC, 50/60 Hz (see type plate).
When setting the external regulator, be sure not to exceed the
maximum operating temperature of 280 °C.
If the heat dissipation is very high near the probe due to the
application, the customer must install a shield to protect the
probe.
5 Operation and controls
NOTICE
The device must not be operated beyond its specifications.
5.1 Basic function of the probe controller
5.1.1 Regulator Functions
After switching on the combination the probe is heated up.
The display with the current temperature will light up on the
controller. As long as the set operating range is has not yet
been reached, the display will flash and the status contact is
in Alarm position. Once the working range has been reached,
the status contact switches and the display is steady.
The target temperature, the working range of the probe and
the temperature unit (°C/°F) are set using the three control
buttons on the controller. This is described in chapter "Opera-
tion and use".
The factory settings are: Unit: °C; target temperature: 260 °C;
working range: ±10 °C
BX460026 ◦ 12/2023
5.2 Use of menu functions
Overview of the operational principal:
Use this short description if you have experience with the
device.
Operation is carried out by only the keys with the following
functions:
Key
• Switch from measurement display to main
menu
• Selection of the display menu item
• Accepting the changed value or selection
• Switch to the upper menu item
• Increase of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
• Switch to lower menu item
• Decrease of the value of switching the selection
• Temporary display of the alternative measure-
ment display (if option is installed)
Function
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