Equipment And Components Under Pressure; Maintenance Safety Considerations - Carrier 19XRV Start-Up, Operation And Maintenance Instructions Manual
19xrv pic iii control
hermetic centrifugal liquid
chillers
Hide thumbs
Also See for 19XRV:
- Operation, maintenance and installation manual (200 pages) ,
- Start-up, operation and maintenance instructions manual (160 pages) ,
- Installation instructions manual (76 pages)
Table of Contents
Advertisement
Ensure good ventilation, as accumulation of refrigerant
in an enclosed space can displace oxygen and cause
asphyxiation or explosions.
Inhalation of high concentrations of vapour is harmful
and may cause heart irregularities, unconsciousness, or
death. Vapour is heavier than air and reduces the amount
of oxygen available for breathing. These products cause
eye and skin irritation. Decomposition products are
hazardous.
1.1 - Equipment and components under pressure
These products incorporate equipment or components
under pressure, manufactured by Carrier or other manufa-
cturers. We recommend that you consult your appropriate
national trade association or the owner of the equipment or
components under pressure (declaration, re-qualification,
retesting, etc.). The characteristics of this equipment/these
components are given on the nameplate or in the required
documentation, supplied with the products.
1.2 - Maintenance safety considerations
Engineers working on the electric or refrigeration compo-
nents must be authorised, trained and fully qualified to do so.
All refrigerant circuit repairs must be carried out by a trained
person, fully qualified to work on these units. He must have
been trained and be familiar with the equipment and the
installation. All welding operations must be carried out by
qualified specialists.
The insulation must be removed and heat generation must
be limited by using a wet cloth.
Any manipulation (opening or closing) of a shut-off
valve must be carried out by a qualified and authorised
engineer. These procedures must be carried out with the
unit shut-down.
NOTE: The unit must never be left shut down with the
liquid line valve closed, as liquid refrigerant can be trapped
between this valve and the expansion device. (This valve
is situated on the liquid line before the filter drier box.)
During any handling, maintenance and service operations
the engineers working on the unit must be equipped with
safety gloves, glasses, shoes and protective clothing.
Never work on a unit that is still energised.
Never work on any of the electrical components, until the
general power supply to the unit has been cut using the
disconnect switch(es) in the control box(es).
If any maintenance operations are carried out on the unit,
lock the power supply circuit in the open position ahead
of the machine.
If the work is interrupted, always ensure that all circuits
are still deenergised before resuming the work.
ATTENTION: Even if the unit has been switched off, the
power circuit remains energised, unless the unit or circuit
disconnect switch is open. Refer to the wiring diagram for
further details. Attach appropriate safety labels.
Operating checks:
IMPORTANT INFORMATION REGARDING THE
REFRIGERANT USED:
•
This product contains fluorinated greenhouse gas
covered by the Kyoto protocol.
Refrigerant type: R-134a
Global Warming Potential (GWP): 1300
Periodic inspections for refrigerant leaks may be
required depending on European or local legislation.
Please contact your local dealer for more information.
•
During the life-time of the system, inspection and tests
must be carried out in accordance with national
regulations.
Safety device checks (annex C6 – EN 378-2):
The safety devices must be checked on site once a year for
safety devices, and every five years for external overpressure
devices (safety valves).
At least once a year thoroughly inspect the protection
devices (valves). If the machine operates in a corrosive
environment, inspect the protection devices more frequently.
Regularly carry out leak tests and immediately repair
any leaks.
Ensure regularly that the vibration levels remain accep-
table and close to those at the initial unit start-up.
Before opening a refrigerant circuit, purge and consult the
pressure gauges.
Change the refrigerant when there are equipment failures,
following a procedure such as the one described in NFE
29-795 or carry out a refrigerant analysis in a specialist
laboratory.
If the refrigerant circuit remains open for longer than a day
after an intervention (such as a component replacement),
the openings must be plugged and the circuit must be
charged with nitrogen (inertia principle). The objective is
to prevent penetration of atmospheric humidity and the
resulting corrosion on the internal walls and on non-
protected steel surfaces.
DO NOT install relief devices in series or backwards.
USE CARE when working near or in line with a
compressed spring. Sudden release of the spring can cause
it and objects in its path to act as projectiles.
Page 5
- Quick Links:
- Alarms and Alerts
- Troubleshooting Guide
Hide quick links:
Advertisement
Table of Contents
