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14306499.01 02/2019 EN
WIKA operating instructions, pressure switch, high adjustability of switch differential, model PSM-700
WIKA operating instructions, pressure switch, high adjustability of switch differential, model PSM-700
4. Transport, packaging and storage
4.1 Transport
Check the instrument for any damage that may have been caused by transport.
Obvious damage must be reported immediately.
CAUTION!
Damage through improper transport
With improper transport, a high level of damage to property can occur.
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When unloading packed goods upon delivery as well as during internal
transport, proceed carefully and observe the symbols on the packaging.
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With internal transport, observe the instructions in chapter 4.2 “Packaging
and storage”.
If the instrument is transported from a cold into a warm environment, the formation of
condensation may result in instrument malfunction. Before putting it back into operation,
wait for the instrument temperature and the room temperature to equalise.
4.2 Packaging and storage
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport (e.g. change
in installation site, sending for repair).
Permissible conditions at the place of storage:
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Storage temperature: -50 ... +60 °C [-58 ... +140 °F]
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Humidity: 35 ... 85 % relative humidity (no condensation)
Avoid exposure to the following factors:
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Direct sunlight or proximity to hot objects
■
Mechanical vibration, mechanical shock (putting it down hard)
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Soot, vapour, dust and corrosive gases
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Hazardous environments, flammable atmospheres
Store the instrument in its original packaging in a location that fulfils the conditions listed
above.
5. Commissioning, operation
Before installation, commissioning and operation, ensure that the appropriate instru-
ment has been selected in terms of design and specific measuring conditions.
Tools: 6.5 mm socket wrench, cross-head screwdreiver, 20 mm open-ended spanner,
6 mm Allen key
5.1 Requirements at the measuring point
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The process pressure must not exceed the specified maximum operating pressure.
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Permissible ambient and medium temperatures remain within the performance
limits.
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Protected from weather influences.
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Any vibrations or shocks which occur must not exceed accelerations of
1 g (9.81 m/s
2
) within a frequency range of 10 ... 150 Hz.
■
The measuring line and the process connection must be designed such that no
mechanical loads can occur on the instrument in the entire permissible ambient and
medium temperature ranges.
■
Sealing faces are clean and undamaged.
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Maintain clearance for blow-out device of > 20 mm.
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Sufficient space for a safe electrical installation.
→ For performance limits see chapter 9 “Specifications”
5.2 Mechanical mounting
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After unpacking the instrument, a visual inspection for damage must be carried out.
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Mounting is only permitted in the depressurised state. Reliably depressurise the
instrument using the available valves and protective devices.
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Use seals suitable for the process connection provided.
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When screwing the instruments in, the force required for sealing must not be applied
through the case, but only through the spanner flats provided for this purpose on the
process connection, and using a suitable tool. The tightening torque is dependent on
the selected process connection.
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After screwing in, make sure that no damage or cracks have occurred at the process
connection.
