Table of Contents
Advertisement
•
do not use cables with an inappropriate section or flying connections not even for a limited period or in an
emergency.
Prevention against residual risks of a different nature
The residual risk due to pressure is mainly coming from non-functioning of the safety devices.
To prevent them it is necessary to follow the checks and replacements as following:
•
To protect from safety devices exhausting it is not allowed to remove the protections while the unit is in operation
and to approach the unit without wearing the right protections. In case of accidental contact with refrigerant due to
the safety valves exhaust it is necessary to follow the above indicated
•
carry out the plant connections to the unit by following the indications reported on the following manual and on the
panels of the unit itself.
•
if a part is disassembled, make sure that it is correctly reassembled before restarting the unit.
•
do not touch the discharge line of the compressor, the compressor itself or any other tube or component which is
inside the machine without putting on protective gloves.
•
keep a fire extinguisher which is able to put out fires on electrical equipment near the machine.
•
on units installed inside, connect the refrigerant circuit shut off valve to a network of tubes which are able to lead the
possible spillage of refrigerating fluid outside.
•
eliminate any fluid loss inside or outside the unit.
•
collect the discharge liquid and clean up any possible oil leakage.
•
periodically clean the compressor casing of the accumulated dirt deposits.
•
do not keep inflammable liquids near the unit.
•
do not dispose of the refrigerant fluid and the lubricating oil in the environment.
•
welding should only be carried out on empty tubes; do not approach the tubes containing refrigerant fluid with flames
or other sources of heat.
•
do not bend or strike tubes containing pressurised fluids.
Precautions to be observed during maintenance operations
Authorised technicians may only carry out maintenance operations. Before carrying out any maintenance the following
must be performed:
•
isolate the unit from the mains electricity by using the external knife switch.
•
place a notice on the external knife switch which says "do not use - maintenance in progress".
•
make sure that any possible on-off commands are disabled.
•
use appropriate safety equipment (helmet, isolating gloves, protective glasses, safety shoes etc.).
•
If measurements or controls must be carried out which require the machine to be running the following observations
must be followed:
•
operate with the electrical panel open for as short a time as is possible.
•
close the electrical panel as soon as the individual measurement or control has been carried out.
•
for units which are located outside, do not carry out interventions in dangerous atmospheric conditions such as rain,
snow, fog etc.
•
The following precautions should also be taken at all times:
•
never dispose of fluids contained in the refrigerant circuit into the environment.
•
when replacing an EPROM or electronic card always use appropriate equipment (extractor, anti-static bracelet, etc.).
•
if a compressor, the evaporator, the condensation coils or any other heavy part is to be replaced, make sure that the
lifting equipment matches the weight to be lifted.
•
in the air cooled units with an independent compressor compartment, do not open the ventilator compartment without
having first isolated the machine using the knife switch on the side of the panel and only after having placed a sign
which says "do not use - maintenance in progress".
•
if modifications must be carried out to the cooling, hydraulic or electrical circuit of the unit, as well as to its command
logic, contact Trane.
•
if particularly complicated assembly or disassembly operations are to be carried out contact Trane.
•
always use original spare parts bought directly from Trane or from official dealers of the companies reported in the
list of recommended spare parts.
•
if the unit is to be moved after a year of being in the site or if it has to be dismantled contact Trane.
Manual alarm reset
If there is an alarm, the unit must not be manually reset before having located and eliminated the cause of the fault.
Repeated manual resets may cause the warranty to be annul
Operating range
The operating ranges are indicated on the plate placed on the unit
Advertisement
Table of Contents
