9
CTC EcoAir 700M
General, work in the vicinity
All maintenance personnel and other people working in the vicinity must be
informed of the risks that the service works involve. Work in conned spaces
must be avoided. The service area must be segregated. Ensure that the area is
safe before work with ammable material.
Detecting refrigerant
The area must be checked with a suitable refrigerant detector before and
during the work so that the service technician can be certain that there is no
refrigerant leakage. Ensure that the detection equipment is suitable for use
when working with ammable refrigerants so that, for example, no sparking
can occur from the equipment, or that it is suciently well sealed or explosion-
proof.
Fire extinguishers
Suitable re extinguishing equipment must be available, for example, dry
powder or CO2 re extinguishers, in heat-generating service works or in
connection with installation of the heat pump.
No sources of ignition
No sources of ignition may be used in such a way that they could cause a risk
of re or explosion in service works in connection with the heat pump. All
possible sources of ignition, including smoking, should be kept a sucient
distance from the workplace due to the risk of release of refrigerant in the
vicinity. Before starting work, the vicinity must be examined to ensure that
there are no re hazards or ignition risks. Signage must state that smoking is
prohibited.
Ventilated service area
Service works must be performed outdoors or in a space that is suciently
ventilated during the time that work is ongoing. The ventilation must safely
ensure that any released refrigerant is taken care of and released into the
atmosphere.
System checks
If electrical components in connection with the refrigerant need to be replaced,
the replacement components must be equivalent in function and specication.
CTC’s guidelines for maintenance and service must always be followed. If in
doubt, contact CTC’s technical support department.
Check of electrical components
Repair and maintenance of electrical components must be preceded by safety
checks and procedures for inspecting the components. In the event of a fault
that may endanger safety, the power must not be connected until the fault has
been remedied. If the fault cannot be remedied immediately and continued
operation of the system is important, a suitable temporary solution may be
used. This must be reported to the owner of the equipment.
Initial safety checks must include:
• Checking that capacitors are discharged; this must be performed in a
safe way to avoid the risk of sparking.
• Ensuring that no electrical components or cabling are exposed during
evacuation or lling of refrigerant.
• Checking that earthing is intact.
