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30RB/30RQ - 30RBY
Maintenance
Servicing recommendations
- Maintenance of the unit must be carried out by skilled personnel only.
Nevertheless, the easiest operations, such as cleaning of the battery and
the unit external parts can be carried out by non-skilled personnel.
- No part of the unit must be used as a walkway, rack or support.
Periodically check and repair or if necessary replace any component or
piping that shows signs of damage. 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.
- For any operation on the unit follow thoroughly the instructions shown
in the manual and on the unit labels as well as the Safety Standards.
Equip the engineers that work on the unit as follows:
Equip the engineers that work on the unit as follows:
Personal protection
equipment (PPE)
(1)
Handling
Protective gloves,
eye protection,
safety shoe,
protective clothing.
Ear protection.
Filtering respirator.
(1) We recommend to follow the instructions in EN 378-3.
(2) Performed in the presence of A1 refrigerant according to EN 378-1.
Pay attention to burns when brazing.
- Use only Carrier Original Spare Parts when repair is required. Always make
sure the spare parts are installed correctly. Always install the spare parts
in the original position.
- The products that may be added for thermal insulation of the containers
during the water piping connection procedure must be chemically
neutral in relation to the materials and coatings to which they are applied.
This is also the case for the products originally supplied by Carrier SCS.
- Before replacing any of the elements in the cooling circuit, ensure that
the entire refrigerant charge is removed from both the high and low
pressure sides of the unit.
- The control elements of the cooling system are highly sensitive.
If they need to be replaced, care should be taken not to overheat them
with blowlamps whilst soldering.
A damp cloth should be wrapped around the component to be soldered,
and the flame directed away from the component body.
- Silver alloy soldering rods should always be used.
- If the total unit gas charge has to be replaced, the quantity should be
as given on the nameplate and the unit should be properly evacuated
beforehand.
- During unit operation all panels should be in place, including the
electrical box access panel.
- If it is necessary to cut the lines of the refrigerant circuit, tube cutters
should always be used and never tools which produce burrs. All
refrigerant circuit tubing should be of copper, specially made for
refrigeration purposes.
- Do not drain water circuits containing industrial brines, without
informing the technical service department at the installation site
or a competent body first.
- Any manipulation (opening or closing) of a shut-off valve must be
carried out by a qualified and authorised engineer, observing applicable
standards (e.g. during draining operations). The unit must be switched
off while this is done.
- Repairs and modifications must be performed by qualified operators
following operating procedures,
23
Operations
Maintenance,
Welding or
service
brazing
X
X
X
X
X
X
Final recommendations
The unit you have purchased has undergone strict quality control
procedures before leaving the factory.
All components, including the control systems and electrical equipment,
etc., are certified by our Quality Control Department, and tested under the
harshest possible operating conditions in our laboratories. However, after
leaving the factory, it is possible that one or more of these elements may
be damaged due to causes beyond our control. In such an event, the user
should not work on any of the internal components, or subject the unit
to operating conditions which are not specified in this manual, since
serious damage may result and the guarantee would be invalidated. Repair
and maintenance work should always be left to the installer.
We recommend to apply the EN 378-4.
All recommendations concerning unit installation are intended as a
guideline. The installer should carry out the installation according to the
design conditions and should comply with all applicable regulations for
air conditioning and refrigeration installations.
(2)
NOTE: The manufacturer does not accept responsibility for any
malfunctions resulting from misuse of the equipment.
Fire and explosion
When this machine is subjected to the heat of a fire, a device prevents
explosion releasing the refrigerant (by a fusible plug). This fluid can be
decomposed into toxic waste when subjected to flame:
- Stay away from this machine,
- Set up the warning and recommendation for personnel responsible for
stopping fire,
- Appropriate fire extinguishers for the system and the refrigerant types
used must be within easy reach.
Log book
Carrier recommends the following drafting for a logbook (the table
below should be considered as reference and does not involve Carrier
responsibility):
Intervention
Date
Nature
(1)
Maintenance, repairs, regular verifications (EN 378), leakage, etc.
(1)
Name of the
Applicable
commissioning
national
engineer
regulations
Verification
Organism
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