4. REFILLING THE HELIUM RESERVOIR
When the reservoir pressure goes down to
approx 30psi (2 bar), the capillary leak needs to
be refilled with pure Helium.
Refilling steps:
1) Attach a clean line from pure helium bottle to
the fill valve of the leak, but do not tighten
the connection;
2) Flow helium through the line to purge the
remaining air from the line;
3) Tighten the connection to the valve;
4) Open the fill valve;
5) Fill the leak to 11 bar (160 psig);
6) Loosen the connection from the helium
source;
7) Open the fill valve and vent the leak to 2 bar
(approximately 30 psig);
8) Repeat steps 3-7 three times to assure gas
purity;
9) Fill to the pressure indicated on the label to
obtain the desired flow rate.
To avoid clogging of the capillary, the line from
your helium source must be clean and free of
moisture. Copper or stainless steel lines are
recommended. A rubber hose should NOT be
used.
5. STORAGE
Capillary leaks are subjected to clogging and
must be kept clean and dry. Store in an air-tight
container when not in use. Care should be
takenthat the end of the capillary tube is not
exposed to oil and dirt.
Recalibration of the gauge is recommended on
an annual or biannual basis depending on the
severity of the environment in which the leak is
being used.
DISPOSAL
Meaning of the "WEEE" logo found in labels
The following symbol is applied in accordance with
the EC WEEE (Waste Electrical and Electronic
Equipment) Directive.
This symbol (
valid only in countries of the
European Community
) indicates that the product it
applies to must NOT be disposed of together with
ordinary domestic or industrial waste but must be
sent to a differentiated waste collection system.
The end user is therefore invited to contact the
supplier of the device, whether the Parent Company
or a retailer, to initiate the collection and disposal
process after checking the contractual terms and
conditions of sale.
CAUTION
