Maintenance and upkeep:
Maintenance and service work should only be carried out by competent technicians with experience and
qualifications in the handling of A2L refrigerants.
The appliance should always be disconnected from the power supply before any work is carried out.
Before maintenance work is carried out all technicians should:
a) Carry out safety checks to ensure the risk of ignition is minimised.
b) Operate with controlled procedures to minimise the risk of flammable gas or vapour being present while
work is carried out.
c) Ensure all staff in the local area are instructed in the nature of the work being carried out.
d) Not work in confined spaces.
e) Check work areas with an appropriate leak detector prior to and during work to minimise the risk of
flammable atmospheres.
f) If any hot work is being carried out an appropriate fire extinguisher should be available to hand. Either
Co2 or dry powder.
g) All possible ignition sources should be kept sufficiently far away from the work area.
h) Adequate ventilation shall be provided when breaking into the refrigeration system. The ventilation should
safely disperse any released refrigerant to the external atmosphere.
i) When replacing electrical components only spare parts specified by the manufacturer shall be used.
j) Electrical work should be preceded with initial safety checks:
i) All capacitors need to be discharged in a manner that avoids sparks.
ii) No live electical components or wiring should be exposed while charging, recovering or purging the
system.
iii) There is continuity of earth bonding.
k) Under no circumstances should potential sources of ignition be used in the searching for or detection
of refrigerant leaks.
l) On discovery of a leak all refrigerant should be removed before a repair is carried out. The manufacturer
recommends purging the circuit with an inert gas before brazing.
m) Before charging ensure the refrigeration system is earthed.
SHEET 9 OF 13
