Maintenance; Inspection; Service; Uv Lamps - Thermo Scientific Safe 2020 Operating Instructions Manual

10.

Maintenance

10.1

Inspection

PER is the value that indicates the safety state of the safety cabinet by
monitoring various device parameters.
• If PER shows a value below 60, the device should be inspected.
• Independent of the PER value, the safety cabinet must be inspected on an
annual basis.
The annual inspection comprises the following checks:
• Electrical safety in accordance with national regulations.
• Functional test of the device.
• Checking all components for possible damage.
• Checking the filter state.
NOTE – Perforated plate
The Perforated plate at the blanket of the sample
chamber serves for the protection of the
downflow filter and prevents refluxing.
While scanning the filter surface for leak test
the perforated plate must be built-in.
• Checking the airflow conditions.
• Repeat test in accordance with NSF 49/1992, Annex F.
10.2

Service

Filter replacement:
As the filter replacement is an interference with the safety system of the device,
filters must only be replaced by Thermo Electron LED GmbH or by adequately
trained and authorized service personnel.
NOTE – Repeat test
Before filters are replaced the disinfection with
formaldehyde is mandatory.
After the filter replacement, a repeat test must
be performed in accordance with EN 12469 /
2000.
10.2.1

UV lamps

The UV lamps should be replaced after 1500 operating hours:
1. Remove cover from lamp housing.
2. Rotate the lamp in the socket so that the lamp contacts can be removed from
the groove in the socket.
3. Insert the new lamp into the socket and rotate until the contacts engage.
4. Replace cover.
Operating Instructions Safety Cabinet Safe 2020 / Maxisafe 2020
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