Carrier 69NT40-561-399 Operation And Service Manual page 16

Means to warn against potential hazard or unsafe practice that could result in personal injury,
product or property damage.
The statements listed below are applicable to the refrigeration unit and appear elsewhere in this manual. These
recommended precautions must be understood and applied during operation and maintenance of the equipment
covered herein.
EXPLOSION HAZARD: Failure to follow this WARNING can result in death, serious personal
injury and / or property damage. Never use air or gas mixtures containing oxygen (O
testing or operating the product. Charge Only With R−134a: Refrigerant must conform to AHRI
Standard 700 specification.
Beware of unannounced starting of the evaporator and condenser fans. The unit may cycle the
fans and compressor unexpectedly as control requirements dictate.
Do not attempt to remove power plug(s) before turning OFF start-stop switch (ST), unit circuit
breaker(s) and external power source.
Make sure the power plugs are clean and dry before connecting to power receptacle.
Make sure that the unit circuit breaker(s) (CB-1 & CB-2) and the START-STOP switch (ST) are in
the "O" (OFF) position before connecting to any electrical power source.
Make sure power to the unit is OFF and power plug disconnected before replacing the com-
pressor.
Before disassembly of the compressor, be sure to relieve the internal pressure very carefully
by slightly loosening the couplings to break the seal.
Do not use a nitrogen cylinder without a pressure regulator.
Do not remove the condenser fan grille before turning power OFF and disconnecting power plug.
T-365
CAUTION
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!
1–2
) for leak
2