5
Installation, operation and maintenance instructions - VMGFE102
1.3 - Installation safety considerations
After the unit has been received, when it is ready to be
installed or reinstalled, and before it is started up, it must be
inspected for damage. Check that the refrigerant circuits are
intact, especially that no components or pipes have shifted or
been damaged (e.g. following a shock). If in doubt, carry out a
leak tightness check. If damage is detected upon receipt,
immediately fi le a claim with the shipping company.
This machine must be installed in a location that is not
accessible to the public and protected against access by
non-authorised people.
Do not remove the skid or the packaging until the unit is in its
fi nal position. These units can be moved with a fork lift truck,
as long as the forks are positioned in the right place and
direction on the unit.
The units can also be lifted with slings, using only the
designated lifting points marked on the unit (labels on the
chassis and a label with all unit handling instructions are
attached to the unit).
Use slings with the correct capacity, and always follow the
lifting instructions on the certifi ed drawings supplied for the
unit.
Safety is only guaranteed, if these instructions are carefully
followed. If this is not the case, there is a risk of material
deterioration and injuries to personnel.
These units are not designed to be lifted from above.
Never cover any safety devices.
This applies to the safety valve in the water circuit and the
safety valve(s) in the cooling circuit(s). Ensure that the valves
are correctly installed, before operating the unit. The safety
valves are designed and installed to ensure protection against
fi re risk. Removing the safety valves is only permitted if the fi re
risk is fully controlled and the responsibility of the user.
All factory-installed safety valves are lead-sealed to prevent
any calibration change.
The safety valves must be connected to discharge pipes for
units installed in confi ned spaces. These pipes must be
installed in a way that ensures that people and property are
not exposed to refrigerant leaks. These fl uids may be diff used
in the air, but far away from any building air intake, or they
must be discharged in a quantity that is appropriate for a
suitably absorbing environment.
Safety valves must be checked periodically. See paragraph
“Repair safety considerations”.
If the safety relief valves are installed on a reversing valve
(changeover), this is equipped with a safety relief valve on each
of the two outlets. Only one of the two safety relief valves is in
operation, the other one is isolated. Never leave the reversing
valve in the intermediate position, i.e. with both ways open
(locate the control element in the stop position). If a safety
valve is removed for checking or replacement please ensure
that there is always an active safety valve on each of the
reversing valves installed in the unit.
Provide a drain in the discharge circuit, close to each globe
valve, to avoid an accumulation of condensate or rain water.
All precautions concerning handling of refrigerant must be
observed in accordance with local regulations.
Accumulation of refrigerant in an enclosed space can displace
oxygen and cause asphyxiation or explosions.
Inhalation of high concentrations of vapour is harmful and
may cause heart irregularities, unconsciousness, or death.
Vapour is heavier than air and reduces the amount of oxygen
available for breathing. These products cause eye and skin
irritation. Decomposition products can be hazardous.
1.4 - Equipment and components under pressure
These products incorporate equipment or components under
pressure. We recommend that you consult your appropriate
national trade association or the owner of the equipment or
compo-nents under pressure (declaration, re-qualifi cation,
retesting, etc.). The characteristics of this equipment/these
components are given on the nameplate or in the required
documentation, supplied with the products.
Do not introduce high static and dynamic pressure compared
with the existing operating pressures - either service or test
pressures in the refrigerant circuit or in the heat transfer
circuit, especially:
•
limiting the elevation of the condensers or evaporators
•
taking the circulating pumps into consideration.
