Article 7 Indirect measuring methods

United Kingdom

To identify a leakage, certified personnel shall carry out a visual and manual check of the equipment and analyse one or more of the following parameters:

(a)

pressure;

(b)

temperature;

(c)

compressor current;

(d)

liquid levels;

(e)

recharge volume.

Any presumption of fluorinated greenhouse gas leakage shall be followed by an examination for leakage using a direct method as specified in Article 6.

One or more of the following situations shall constitute a presumption of leakage:

(a)

a fixed leakage detection system indicates leakage;

(b)

the equipment produces abnormal noises or vibration or ice formation or insufficient cooling capacity;

(c)

indications of corrosion, oil leaks and component or material damage at possible leakage points;

(d)

indications of leakage from sight glasses or level indicators or other visual aids;

(e)

indications of damage in safety switches, pressure switches, gauges and sensor connections;

(f)

deviations from normal operational conditions indicated by the parameters analysed, including readings from real time electronic systems;

(g)

other signs indicating refrigerant charge loss.