GCE MediVital Manuel D'utilisation page 7

must be withdrawn from the service immediately.
Do not exceed the maximum torque allowed for the cylinder. Excessive torque may
damage the combination valve thread preventing its reuse. Certain types of cylinders
may require a torque lower than specified in EN ISO 13341. Check max. allowed torque
value with your cylinder supplier.
Multiple reassembly can damage inlet stem thread.
Take care not to damage external components of combination valve for instance inlet
gas pressure indicator.
6.1.3 FILLING OPERATIONS
Observe oxygen cleanliness standards during filling.
Use genuine GCE filling adaptors only. Other filling adaptors may damage the non-
return valve in the filling port and impact the safety of the product.
6.1.3.1 Inspection before filling
•
Check if all labels and markings are legible and undamaged.
•
Remove protective cover from the filling port. Some types of covers are permanently
connected to the combination valve or guard. This is to prevent its loss and such connection
should not be broken.
•
Check combination valve and filling adaptor for damage.
•
Check combination valve and filling adaptor for contamination. If needed proceed with
cleaning procedure according to chapter 8.
•
Check that the service or the total life time of the GCE product and gas cylinder has not
been exceeded.
•
If a bursting disk is part of the combination valve , check that not damaged.
•
Check that the filling port is compatible with the filling adaptor (gas / type).
•
Check the preset filling pressure - The filling pressure (settled pressure at 15°C) shall not
exceed rated combination valve inlet pressure.
If you have a suspect that inner parts of the combination valve have been contaminated,
it must be withdrawn from the service immediately.
6.1.3.2 Combination valve venting
A. Venting of combination valve through flow control head:
•
Ensure the shut-off valve is closed.
•
Set flow control head in maximal position - ensure that flow control head engages correctly.
•
Wait until the combination valve is completely vented.
•
Set flow control head in position "0" - ensure correct position of flow control head.
B. Venting of combination valve through gas pressure outlet:
•
Ensure the shut-off valve is closed.
•
Insert quick-coupler probe in the combination valve quick coupler (refer to appendix Nr. 2 to
get information about connecting / disconnecting procedure of quick coupler type on your
product).
•
Wait until the combination valve is completely vented.
•
Disconnect quick coupler probe.
Venting through the combination valve quick-coupler must only be performed with
appropriate quick coupler probe to prevent combination valve damage.
6.1.3.3 Fitting the filling adaptor
•
Connect the filling adaptor using max. tightening torque of 3,5 Nm.
To prevent combination valve damage, pressure inside the combination valve must be
7/104
EN