Specifications

2
Repair safety consideration
The personnel in charge must maintain all installation
parts, in order to avoid material deterioration and injuries
to people. Faults and leaks must be repaired immediately.
The authorized technician must have the responsibility to
repair the fault immediately. Each time repairs have been
carried out to the unit; the operation of the safety devices
must be re-checked.
If a leak occurs, evacuate all refrigerant, repair the leak
detected and recharge the circuit with the total R407C or R22
charge, as indicated on the unit name plate. Only charge liquid
refrigerant R407C or R22 at the liquid line (see chapter "
Refrigerant charge ".)
Ensure that you are using the correct refrigerant type before
recharging the unit (see unit name plate).
Charging any refrigerant other than the original charge type
will impair machine operation and can even lead to a
destruction of the compressors.
Do not use oxygen to purge lines or to pressurize a machine
for any purpose. Oxygen gas reacts violently with oil, grease,
and other common substances.
Never exceed the specified maximum operating pressures.
Verify the allowable maximum high-and low side lest
pressures by checking the instructions in this manual and the
pressures given on the unit nameplate.
Do not use air for leak testing. Use only refrigerant or dry
nitrogen.
Do not unwed or flame cut the refrigerant lines or any
refrigerant circuit component until all refrigerant (liquid and
vapor) has been removed from chiller. Traces of vapor should
be displaced with dry air nitrogen. Refrigerant in contact with
an open flame produces 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. 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.
Never apply an open flame or live steam to a refrigerant
container. Dangerous overpressure can result. If it is necessary
to heat refrigerant, use only warm water.
Do not re-use disposable (non-returnable) cylinders or
Attempt to refill them. It is dangerous and illegal. When
cylinders are empty, evacuate the remaining gas pressure, and
move the cylinders to a place designated for their 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 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 safety valves in
series or backwards.
CAUTION: 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 hedonic 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 hedonic circuits to ensure that they do not
show any corrosion or any signs of leaks.