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9. CHECKING THE LEAK RATE
Please note: Subsequent mentions of descriptions and position numbers refer to
chapter 3. Product overview / product description on page 11.
9�1
Measuring the leak rate using a concentration meter
- A concentration meter can be used to determine whether the WEH
tight. Please observe these following instructions when using such a device for leak
testing:
Î
Use a gas detector for flammable gases for this purpose.
Î
Prior to this check, be sure to purge the entire product with nitrogen or
compressed air from the outside.
Î
Make sure that you maintain a distance of 10–15 cm from the components of the
WEH
Product.
®
Î
If the measured leak rate exceeds 1,000 ppm, dismantle the WEH
return it to WEH for maintenance.
- Due to the applicable technical requirements, gas detectors are not suitable for
measuring a technical leak rate. Therefore, a gas detector can only be used as an
indicator. The limit value of 1,000 ppm should therefore be regarded as a guideline
and not as an absolute limit.
- If you return the WEH
mean that the WEH
accurate leak rate, and ascertain the relevance of that rate, if you carry out your
measurement using suitable measuring devices.
Î
Check the WEH
®
pressure. Observe the necessary prescribed safety requirements, if applicable.
- Please observe the following instructions if you are using our WEH
site with a fueling station for liquid fuels:
Î
First determine the background value of the fueling station at a distance of one
meter from the WEH
Î
Then deduct the measured background value from the measured actual value on
the WEH
Product.
®
Î
Follow the procedure above if the resulting value continues to exceed/actually
exceeds 1,000 ppm.
- If the breakaway coupling is used with a WEH
must be connected to a WEH
prevents any damage to the fueling nozzle.
Product to WEH for inspection, this does not automatically
®
Product is leaking or defective. You can only determine an
®
Product for leakage using operating medium under operating
Product.
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Service receptacle during the flushing process. This
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Operating instructions
Fueling nozzle, the fueling nozzle
®
MD-10418-L51-R1.0.0-03
AE
Product is leak
®
Product and
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Product at a
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Page 25
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