Maintenance and care
multi EA 5100
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1
4
2
5
3
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Assemble the flow monitoring set in the following order:
– Thread the screw cap, the seal and the sealing cone (1) onto the thin
hose (2).
– Connect the hose (2) with the other hose (3).
– Attach the water trap and the adapter (4) to the hose (3).
– Attach the hose (5) to the adapter.
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First, completely empty the sulfuric acid from the sulfuric acid container
of the Cl module 5100 (→ "Replacing the sulfuric acid and cleaning the
sulfuric acid container."
147). Then clean, dry and re-install the con-
tainer and all adjacent components (safety attachment, gas transfer
hose, connector).
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Measuring cell "high sensitive" (image):
– Remove the gas inlet hose from the measuring cell. Remove the elec-
trolyte from the gas inlet hose. Clean and dry the outside and inside
of the tube and the connector.
– Connect the gas inlet hose to hose 5 of the flow monitoring set.
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Measuring cells "sensitive" and "high concentration":
– Disconnect hose 20 from the combined electrode and connect it to
hose 5 of the flow monitoring set.
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Remove the "MFM in" screw connection on the cover of the control elec-
tronics in the basic module and connect the flow monitoring set (hose 2)
(see arrow).
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Read the current gas flow in the Component test |Flow System |Compo-
nent test menu item) window.
The target flow is the sum total of the measured inlet flows (main + inlet
+ argon bypass). For methods using gas samplers, the auxiliary gas flow
of the gas sampler must be added.
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If the displayed flow differs from the target flow by more than
± 15 ml/min, search for and remedy the possible causes. Contact the cus-
tomer service department if this is not successful.
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After the flow measurements, remove the set and reconnect hose 5 to
the MFM inlet to ensure a complete measuring gas path for N/S/C meth-
ods.
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Refill the sulfuric acid container with sulfuric acid.
Alternatively, the system tightness can also be checked at the transfer line. In this case,
it is not necessary to drain the sulfuric acid, but the check does not cover the entire gas
path. As leaks usually occur on the basic module, this check is a simple and quick alter-
native.
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Open the front doors of the basic module and the Cl module 5100.
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Unscrew the heated transfer line from the connector of the sulfuric acid
container.
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Connect the Fingertight connector of the transfer line to the hose of the
flow monitoring set.
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Then proceed as described before.
