System Start-Up; Checks Before System Start-Up; Commissioning - Carrier 30RBM 160 Installation, Operation And Maintenance Instructions

10 - SYSTEM START-UP

10.1 - Checks before system start-up

Before starting up the thermodynamic system, the complete
system, including the thermodynamic system, must be verified
against the installation drawings, dimensional drawings, system
piping and instrumentation diagrams and the wiring diagrams.
All measures must be taken to ensure that the pressure and
temperature limits, which are specifically those listed on the
nameplates, are not exceeded during operation, maintenance
and recirculation.
Heat exchange fluid temperatures above the maximum
recommended can lead to an increase in the refrigerant
pressure and can cause a loss of refrigerant due to the relief
valve discharge.
National regulations must be followed during these checks. If
the national regulation does not specify any details, refer to
standard EN 378 as follows:
External visual installation checks:
• Ensure that the unit is charged with refrigerant. Verify
on the unit nameplate that the 'fluid transported' is that
recommended for operation, and is not nitrogen.
• Compare the complete system with the refrigeration
system and power circuit diagrams.
• Check that all documents provided by the manufacturer
(dimensional drawings, pipe and instrument diagram
(PID), declarations, etc.) to comply with the regulations
are present. If any documentation is missing, order a
replacement.
• Make sure the environmental safety and protection
devices and arrangements provided by the manufacturer
to comply with the regulations are in place.
• Make sure all declarations of conformity for the pressure
containers, identification plates and documentation
required to comply with local regulations are present.
• Make sure access and safety routes are unobstructed.
• Check the instructions and directives to prevent the
deliberate removal of refrigerant fluids.
• Verify the installation of connections.
• Verify the supports and fixing elements (materials, routing
and connection).
• Verify the quality of welds and other joints.
• Check the protection against mechanical damage.
• Check the protection against heat.
• Check the protection of moving parts.
• Verify accessibility for maintenance or repair and to check
the piping.
• Verify the status of the valves.
• Verify the quality of the thermal insulation.
• Check the condition of 400 V cable insulation.
IMPORTANT:
If the compressors are equipped with mounts, check whether
these mounts have clamping mechanisms. If they do, the
clamping mechanisms must be removed before system start-
up. Clamping mechanisms are identified by red collars and
signalled by a label affixed to the compressor sub-assembly.
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10.2 - Commissioning

Always ensure you have read and fully understood the
operating instructions for the units before starting up the unit,
and ensure the following precautions have been taken:
• Check the heat-transfer fluid circulation pumps, the air
handling equipment, and any other equipment connected
to the heat exchangers.
• Refer to these instructions.
• Refer to the electrical diagram delivered with the unit.
• Make sure there are no refrigerant leaks.
• Check the tightness of the fixing clamps on all pipes.
• Check the power supply at the main connection point
and the order of phases.
• Open the suction shut-off valves on each circuit for the
corresponding units.
• For units without the factory-fitted hydronic module
option, the installer is responsible for heat protection and
the connections relating to the system pump.
• Check the operation of the compressor oil crankcase
heaters 6 hours before starting up the system.
IMPORTANT:
Commissioning and start-up must be supervised by a qualified
engineer.
• The system must have a heat load and water flowing in
the exchangers when it is started up and tested.
• All setpoint adjustments and control tests must be carried
out before the unit is started up.
• Refer to the Service guide.
Proceed with the unit commissioning.
Make sure all safety devices are operational, and especially
that the high pressure switches are engaged and that any
alarms have been cleared.
NOTE:
If the manufacturer's recommendations (system, water and
power connections) are not observed, no claims made under
the warranty will be accepted.