Introduction; Installation Safety Considerations; Equipment And Components Under Pressure; Maintenance Safety Considerations - Carrier Pro-Dialog Plus 30HZ Installation, Operation And Maintenance Instructions

1 - INTRODUCTION

Prior to the initial start-up of the 30HZ/HZV units, the
people involved in the on-site installation, start-up, operation,
and maintenance of this unit should be thoroughly familiar
with these instructions and the specific project data for the
installation site.
The 30HZ/HZV liquid chillers are designed to provide a
very high level of safety during installation, start-up, opera-
tion and maintenance. They will provide safe and reliable
service when operated within their application range.
This manual provides the necessary information to fami-
liarize yourself with the control system before performing
start-up procedures. The procedures in this manual are
arranged in the sequence required for machine installation,
start-up, operation and maintenance.
Be sure you understand and follow the procedures and
safety precautions contained in the instructions supplied
with the machine, as well as those listed in this guide.
To find out, if these products comply with European
directives (machine safety, low voltage, electromagnetic
compatibility, equipment under pressure etc.) check the
declarations of conformity for these products.

1.1 - 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 circuit(s)
is (are) intact, especially that no components or pipes have
shifted (e.g. following a shock). If in doubt, carry out a leak
tightness check and verify with the manufacturer that the
circuit integrity has not been impaired. If damage is detected
upon receipt, immediately file a claim with the shipping
company.
Do not remove the skid or the packaging until the unit is
in its final 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.
These units are not designed to be lifted from above. Use
slings with the correct capacity, and always follow the
lifting instructions on the certified drawings supplied with
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.
Never cover any safety devices.
This applies to the globe valve in the water circuit and
the globe valve(s) in the refrigerant circuit(s).
Ensure that the valves are correctly installed, before
operating the unit.
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In certain cases the globe stops are installed on ball valves.
These valves are factory-supplied lead-sealed in the open
position. This system permits isolating and removing the
globe stop for checking and replacing. The globe stops are
designed and installed to ensure protection against fire risk.
Removing the globe stops is only permitted if the fire risk
is fully controlled and the responsibility of the user.
The safety valves must be connected to discharge pipes.
These pipes must be installed in a way that ensures that
people and property are not exposed to refrigerant leaks.
These fluids may be diffused 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.
Periodic check of the globe valves: See paragraph "Mainte-
nance safety considerations".
Provide a drain in the discharge circuit, close to each valve,
to avoid an accumulation of condensate.
Ensure good ventilation, as accumulation of refrigerant in
an enclosed space can displace oxygen and cause asphyxia-
tion 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 oxy-
gen available for breathing. These products cause eye and
skin irritation. Decomposition products are hazardous.

1.2 - Equipment and components under pressure

These products incorporate equipment or components under
pressure, manufactured by Carrier or other manufacturers.
We recommend that you consult your appropriate national
trade association or the owner of the equipment or compo-
nents under pressure (declaration, re-qualification, retesting,
etc.). The characteristics of this equipment/these components
are given on the nameplate or in the required documenta-
tion, supplied with the products.

1.3 - Maintenance safety considerations

Engineers working on the electric or refrigeration compo-
nents must be authorized, trained and fully qualified to do
so (electricians trained and qualified in accordance with
IEC 60364 Classification BA4).
All refrigerant circuit repairs must be carried out by a trained
person, fully qualified to work on these units. He must have
been trained and be familiar with the equipment and the
installation. All welding operations must be carried out by
qualified specialists.
Any manipulation (opening or closing) of a shut-off
valve must be carried out by a qualified and authorised
engineer. These procedures must be carried out with the
unit shut-down.