9
1 - INTRODUCTION
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.
•
Have access to a first-aid kit, especially for treating eye
injuries.
We recommend to apply standard EN-378.
Never apply an open flame or live steam to a refrigerant
container. Dangerous overpressure can result.
During refrigerant removal and storage operations follow
applicable regulations.
Any refrigerant transfer and recovery operations must be
carried out using a transfer unit. An SAE connector
(respectively 1/2” for R-1234ze(E) and 3/8” for R-515B) on the
manual liquid line valve is supplied with all units for
connection to the transfer station. The units must never be
modified to add refrigerant or oil charging devices, removal
or purging devices. All these features are provided with the
units. Please refer to the certified dimensional drawings for
the units.
Never use the compressor as a vacuum pump. It would
damage the compressor.
Do not re-use disposable (non-returnable) cylinders or
attempt to refill them. It is dangerous and illegal. Proper
refrigerant cylinders designated and marked for the original
refrigerant stated on the nameplate should be used. When
cylinders are empty, evacuate the remaining gas pressure,
and move the cylinders to a place designated for their
recovery. Do not incinerate.
ATTENTION: Only use refrigerant, in accordance with AHRI
700-2014 (Air conditioning, Heating and Refrigeration
Institute). The use of any other refrigerant may expose users
and operators to unexpected risks.
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 has been purged
with nitrogen 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 walk-way,
rack or support. Periodically check and repair or if necessary
replace any component or piping that shows signs of damage.
The refrigerant lines can break under the weight and release
refrigerant, causing personal injury.
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 water circuit, before working on the components
installed on the circuit (screen filter, pump, water flow switch,
etc.).
Do not loosen the water box bolts until the water boxes have
been completely drained.
Periodically inspect all valves, fittings and pipes of the
refrigerant and hydraulic 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.
