Inficon 510-010, Technical Handbook

Page: 43 / 52

Maintenance
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6 Maintenance
6.1 INFICON Service
If an the HLD5000 is returned to INFICON, please indicate whether it is free of
substances damaging to health or whether it is contaminated. If it is contaminated
also indicate the nature of the hazard. For this you must use a form pre-prepared,
which we will send to you upon request or which you may copy from this manual.
The form is called: "Declaration of Contamination of Vacuum Equipment and
Components”.
Affix this form to the HLD5000 or enclose it with the leak detector. This Declaration
of Contamination is required by us to meet the requirements of the laws and to
protect our staff.
INFICON will return any leak detectors without a "Declaration of Contamination" to
the sender’s address.
6.2 Maintenance Work
No fixed maintenance intervals have been specified for the HLD5000. The work
described in the following will only have to be done as required.
6.2.1 Replacing the Filters
The filters serve the purpose of filtering the air taken in. In order not to obstruct the
airflow and to prevent the HLD5000 from being contaminated all filters should be
exchanged preventatively.
There are three filters in the HLD5000, two within the sniffer tip filtering the air intake
through the sniffer line and one air filter at the bottom of the housing.
6.2.1.1 Exchanging the filters in the sniffer line
We recommend to exchange the filter holder at the probe tip preventatively at least
once a week and the filter cartridge at the bottom of the sniffer tip at least once a
month.
If the function “Request for filter replacement“ is enabled, the message „Please
replace filter holder!“ will be displayed every 40 hours of operation. After replacing
the filter holder and acknowledging the message the internal counter for this function
will be reset and the message will pop up after another 40 hours of operation. Any
dirty or clogged filter in the sniffer line will lead to the same error message as a dirty
tip filter holder. In dirty conditions the error message “flow at measuring line too low”
or “flow at reference line too low” may occur before expiration of these time limits. On
occurrence of these error messages please exchange the tip filter holder first. If this
does not fix the problem, please also exchange the filter cartridge.