Maintenance and care
multi EA 5100
138
}
Replace the sealing rings of the check valves in the upper and lower part
of the valve block.
}
Insert new check valves.
}
Assemble the valve block and screw on the top part.
}
Connect hose 3 to the "main" connection and hose 4 to the "inlet" connec-
tion.
}
Connect the protective ground conductor to the side panel and close the
side panel.
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Open the gas supply at the shut-off valve.
}
Connect the power cable on the basic module and switch on the module
via the power switch.
ü
The basic module is now ready for operation again.
14.7.2 Replacing the particle filters in the gas inlets
The "Ar" and "O2" gas inlets on the rear of the basic module are equipped with particle fil-
ters. The particle filters and check valves must be replaced if the process gases can no
longer be set to their target values (observe the message in the software) and possible
leaks in the system have been excluded.
}
Switch off the basic module and disconnect the power plug from the
power outlet.
}
Switch off the gas supply at the shut-off valve.
}
When using the ABD: Disconnect the ABD from the basic module and
move the sampling module slightly to access the rear of the device.
}
Pull the gas hose out of its connection on the rear of the basic module.
To do so, press down the red ring and pull the gas hose out of the con-
nection.
}
Unscrew the gas connections with a 13 mm open-ended wrench.
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Unscrew the particle filters inside using a 5 mm hexagon socket wrench.
}
Insert and tighten the new particle filter.
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Screw in the gas connections and tighten them with an open-ended
wrench. Connect the gas hoses.
}
Reconnect the sampling module, if necessary.
}
Switch on the gas supply.
}
Connect the power cable to the basic module and switch on the module
via the power switch.
ü
The basic module is now ready for operation again.
