Aqua Lung Calypso User Manual download pdf (Page 9)

Calypso First Stage Service Manual 9

Final check before use

Checking the medium pressure :

1. Screw an MP gauge (0-25 bar) into one of the MP

ports. If the gauge is not fitted with an over-pressure

valve, then it is vital that the second stage is fitted

so that it can act as an over-pressure valve in the

event of an HP leak.

Connect the first stage to a cylinder charged to

200bar. Slowly open the cylinder valve to put the

regulator under pressure.

Attention: if the MP indicated rapidly exceeds

9.5bar then this indicates a HP leak. Close the

cylinder valve immediately and purge the

regulator.

Refer to Table 1. Troubleshooting Guide.

3. With the regulator under pressure, press 2 or 3

times on the purge button to produce an

airflow.

4. Check the MP reading, which should be

between 9 and 10 bar.

5. Leave the regulator under pressure for about

10 seconds – the MP should remain stable

and should not rise by more than 0.3 bar.

If the

MP rises more than 0.3 bar this indicates that there

is a leak. Refer to Table 1. Troubleshooting

Guide.

Immerse the first stage completely in water to check

that there are no leaks.

Note: Do not mistake any bubbles that are

trapped in the regulator with a leak. If there is a

leak there will be a constant stream of bubbles.

When you are sure that there is no leak, close the cylinder

valve and purge the regulator. Remove the first stage from

the cylinder and refit the dust cap.

If a leak has been detected then note its source and refer to

Table 1. Troubleshooting Guide.

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Aqua Lung Calypso User Manual Page 9