FCO770 Users Guide Issue 1
Page 15
INSTALLATION
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Unpack the instrument carefully and check for transit damage. If there is any damage please
report it immediately.
Check that all the necessary fittings are present as shown on the packing sheet
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The leak detector should be
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close to the test item to keep the test pipes as short as possible.
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installed away from any sources of temperature change; e.g. heaters and draughts.
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positioned away from high power machines such as welders.
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positioned in an area free from vibration.
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External filtering must be provided. See “Safety notes and recommendations”
Supply air should be dry and clean. Contamination by oil and water from the air supply will
damage the instrument and invalidate the guarantee. Drain off any water from an air line
tapping point before connecting the instrument. Disconnect the instrument during periods of
factory shutdown and drain the air line before reconnection.
i)
Connect a clean air supply of 5-10 bar to the Air Supply Port. This supply is always
required to operate the internal valves.
ii)
Connect a clean dry air supply at the test pressure to the Regulated Air In port. If the
optional internal regulator is fitted then the regulated air in port is normally connected
to the regulated air out port, and the test supply air is connected to the regulator
supply port at a pressure of at least 1 bar above the maximum test pressure.
iii)
The item to be tested or the test jig needs piping to the "+" Test port. If a reference
volume is being used this must be piped to the "-" Test port, otherwise the port must
be blanked. For commissioning and self-checking, you must be able to blank the ports
using the blanking caps provided. For vacuum tests it is recommended that the test
port should be protected with a vacuum filter (part number M1049) – this is supplied
loose with instruments supplied specifically for vacuum tests.
iv)
If the test item requires venting after a test, then connect a vent valve between the test
item and the test port, with the valve being driven from the VENT PILOT
(recommended for large volumes and or high pressure).
v)
If the jig is to be operated by the instrument controlled air supply, connect it to the
JIG PILOT port. If this port is not used then it should be blanked off with a plug.
NOTE: All connections to the 'Test +' or the 'Test -' ports must be leak tight. Metal to metal
connections should be sealed using a known good sealing compound, not P.T.F.E. tape. The
Summary of Contents for FCO770
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