Trane Flex II Series Installation Operation & Maintenance page 4

2.2 ACCESS TO DANGEROUS AREA
The access to the unit dangerous areas is usually obstructed through protection panels, which are removable, by using a
tool. Axial fans are protected with accident prevention grilles.
For all the units which allow access to the cooling piping without security gratings (optional) or closing paneling, the
following precautions must be taken:
-mark the areas with contact risks.
-apply warning signs.
The danger zone must be of a suitable size to avoid any contact, even accidental contact.
In the presence of safety valves without relevant remote controls, the operating area must be of a size which
considers a range of action of the discharge flow of 3 meters.
Trane declines any responsibility for damage to things and unauthorized personnel in case of absence of clear and
static limiting systems of the risk areas and of the relevant warning and danger signs.
2.3 GENERAL PRECAUTIONS
The operator must only intervene on the unit commands; he or she must not open any panels except for the one which
gives access to the command module.
The installer must only intervene on the connections between the plant and the machine; he or she must not open any
machine panels nor carry out any commands.
The following precautions should be made when approaching or working on the unit:
Do not wear jewelry, baggy clothes or any other accessory which can get caught up.
•
Use appropriate protection (gloves, glasses etc.) when using an open flame (welding) or compressed air.
•
If the unit is located in a closed environment, wear hearing protection.
•
Before disconnecting, removing tubes, filters, joints or other line parts intercept the connection tubes, empty them
•
until the pressure reaches that of the atmosphere.
Do not use your hands to check for possible pressure losses.
•
Always use tools which are in good condition; make sure the instructions have been fully understood before using them.
•
Make sure that any tools, electrical cables or other loose objects have been removed before closing the unit and
•
starting it up again.
2.4 GENERAL AGAINST RISKS DUE TO THE REFRIGERANT
Safety data
Toxicity
Risks for skin touching
Risks for contact with
the eyes
Risks for ingestion
Risks for inhalation
Conditions to avoid
Dangerous reactions
Protection wearing -
Behavior in case of
losses or escapes
Dismantlement
Not important
Splashes or sprinkles can cause chill burns. The risk of absorptions through the skin is not relevant.
The R410a refrigerant could take some lightly irritating effects and in liquid stage it has a strong skinning effect.
In this case it is necessary to rinse with fresh water the contaminated parts of the skin
The refrigerant in liquid stage in contact with wet fabrics cause freezing and adherence to the skin. In this case it
is necessary to put off the contaminated clothes to avoid freezing. Please contact a doctor in case of irritation of
the contaminated parts.
Vapors don't take any effect. Splashes or sprinklers can cause chill burns. In those cases it is necessary to
rinse the eyes with water or with solution for ocular washings for 10 minutes. The intervention of a doctor is
needed.
Should it happen, it causes chill burns. It does not cause vomiting. The person must be kept awake. It is needed
to rinse the mouth with fresh water and to drink almost 0.25 liters. The intervention of a doctor is needed.
High concentration of vapors in air can lead to anesthetic effects up to a loss of conscience. Long
exposures could give rise to cardiac arrhythmia and sometimes even to death.
High concentrations can create a reduction of oxygen in air, with consequent possibility of suffocation. Should it
happen the person must be taken to the open air and let him take a rest.
Administer oxygen if needed. In case the breathing has interrupted or become irregular, it is necessary to
apply artificial breathing. In case of cardiac arrest a heart massage must be applied. Contact a doctor
immediately.
Use in presence of exposed flames, and of high levels of humidity.
Possibility of violent reactions with the sodium, the potassium, the barium and with other alkaline
substances, incompatible materials and all the alloys containing more than 2% of magnesium.
Wear protection apparel and self respirators. Insulate the source of the loss, if this operation can be done in safety
conditions. Small quantitative of refrigerant escaped at liquid state can be allowed to evaporate only if the room is
well ventilated. In case of great losses ventilate the room immediately. Plug the loss with sand, soil or other
absorbent material; avoid that the liquid refrigerant can enter in water-drainages or losing pools.
The best procedure is the recovery and the recycle. If this is not possible the refrigerant must be conferred to an
accredited system for its destruction in order to neutralize acid and toxic by-products.
4