- charge the weight of R410A as per the value indicated on the unit's identification plate.
4. In case of leakage, do not complete the charge: recover the remaining refrigerant for recycling and
perform a total charge. Recovery, recycling or the destruction of the fluid must be done in compliance
with the laws in force in the country concerned.
5. If the refrigerant circuit is opened, you must:
- avoid the entry of air into the circuit as much as possible,
- replace or install a drier,
- perform the "vacuum operation" at a minimum level of 0.3 mbar (static).
Page 2
In order to reduce the number of fatalities and major accidents attributable to working at height, the
Health and Safety Executive has introduced comprehensive regulations and guidance that should be
followed by all businesses working at height.
We consider in the following paragraphs some of the main features of the regulations and guidance. This
is, however, only a limited summary and it is recommended that all businesses planning on undertaking
air source heat pump heating installations obtain a copy of the regulations and guidance issued by the
Health and Safety Executive and carefully consider the contents.
The regulations and guidance state that you are required to carry out a risk assessment for all work
conducted at height and to put in place arrangements for:
●
Eliminating or minimising risks from work at height.
●
Safe systems of work for organising and performing work at height.
●
Safe systems for selecting suitable work equipment.
●
Safe systems for protecting people from the consequences of work at height.
The regulations and guidance highlight a hierarchy for safe work at height:
●
Avoid the risk by not working at height if practicable.
●
Prevent falls. Where it is not reasonably practicable to avoid work at height, you are required to
take suitable and sufficient steps to prevent the risk of a fall including selecting the most suitable
work equipment (in accordance with the regulations).
●
Mitigate the consequences of a fall; where the risk of a person or object falling still remains, take
suitable and sufficient measures to minimise the distance and consequences of any fall.
Collective protection measures, such as guard rails on scaffold, should be given priority over personal
protection measures, such as safety harnesses.
Within the regulations' framework, you are required to:
1) Assess the risk to help you decide how to work safely.
2) Follow the hierarchy for safe work at height (i.e. avoid, prevent and mitigate).
