8
Never exceed the specified maximum operating pressures. Verify
the allowable maximum high- and low-side test pressures by
checking the instructions in this manual and the pressures given
on the unit name plate.
Do not unweld or flamecut the refrigerant lines or any refrigerant
circuit component until all refrigerant (liquid and vapour) as
well as the oil have been removed from the heat pump. Traces
of vapour should be displaced with dry nitrogen. Refrigerant in
contact with an open flame can produce toxic gases.
The necessary protection equipment must be available, and
appropriate fire extinguishers for the system and the refrigerant
type used must be within easy reach.
Do not siphon refrigerant.
Avoid spilling liquid refrigerant on skin or splashing it into the
eyes. Use safety goggles and safety gloves. Wash any spills from
the skin with soap and water. If liquid refrigerant enters the eyes,
immediately and abundantly flush the eyes with water and
consult a doctor.
The accidental releases of the refrigerant, due to small leaks or
significant discharges following the rupture of a pipe or an
unexpected release from a relief valve, can cause frostbites and
burns to personnel exposed. Do not ignore such injuries. Installers,
owners and especially service engineers for these units must:
-
Seek medical attention before treating such injuries.
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Have access to a first-aid kit, especially for treating eye
injuries.
We recommend to apply standard EN 378-3 Annex 3.
Never apply an open flame (blowlamp) or overheated steam
(high-pressure cleaner) to the refrigerant circuit. Dangerous
overpressure can result.
During refrigerant removal and storage operations follow
applicable regulations. These regulations, permitting
conditioning and recovery of halogenated hydrocarbons under
optimum quality conditions for the products and optimum safety
conditions for people, property and the environment are described
in standard NF E29-795.
Refer to the certified dimensional drawings for the units.
It is dangerous and illegal to re-use disposable (non-returnable)
cylinders or attempt to refill them. When cylinders are empty,
evacuate the remaining gas pressure, and move them to a
designated place for recovery. Do not incinerate.
Do not attempt to remove refrigerant circuit components or
fittings, while the machine is under pressure or while it is running.
Be sure pressure is at 0 kPa and that the unit has been shut-down
and de-energised before removing components or opening a circuit.
Do not attempt to repair or recondition any safety devices when
corrosion or build-up of foreign material (rust, dirt, scale, etc.)
is found within the valve body or mechanism. If necessary,
replace the device. Do not install relief valves in series or
backwards.
ATTENTION: No part of the unit must be used as a walkway,
rack or support. Periodically check and repair or if necessary
replace any component or piping that shows signs of damage.
Do not step on refrigerant lines. The lines can break under the
weight and release refrigerant, causing personal injury.
Do not climb on a machine. Use a platform, or staging to work
at higher levels.
Use mechanical lifting equipment (crane, hoist, winch, etc.) to
lift or move heavy components. For lighter components, use
lifting equipment when there is a risk of slipping or losing your
balance.
Use only original replacement parts for any repair or component
replacement. Consult the list of replacement parts that
corresponds to the specification of the original equipment.
Do not drain water circuits containing industrial brines, without
informing the technical service department at the installation
site or a competent body first.
Close the entering and leaving water shutoff valves and purge
the unit hydronic circuit, before working on the components
installed on the circuit (screen filter, pump, water flow switch,
etc.).
Periodically inspect all valves, fittings and pipes of the refrigerant
and hydronic circuits to ensure that they do not show any
corrosion or any signs of leaks.
It is recommended to wear ear defenders, when working near
the unit and the unit is in operation.
Always ensure you are using the correct refrigerant type before
recharging the unit.
Charging any refrigerant other than the original charge type
(R-410A) will impair machine operation and can even lead to
a destruction of the compressors. The compressors operate with
R-410A and are charged with a synthetic polyolester oil.
Before any intervention on the refrigerant circuit, the complete
refrigerant charge must be recovered.
2 - MOVING AND SITING THE UNIT
2.1 - Moving
See chapter 1.3 - “Installation safety considerations”.
2.2 - Siting the unit
The machine must be installed in a place that is not accessible
to the public or protected against access by non-authorised
persons.
In case of extra-high units the machine environment must
permit easy access for maintenance operations.
Always refer to the chapter “Dimensions and clearances”
to confirm that there is adequate space for all connections
and service operations. For the centre of gravity coordinates,
the position of the unit mounting holes, and the weight
distribution points, refer to the certified dimensional drawing
supplied with the unit.
Summary of Contents for 30RQS039
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