This task covers:
Refrigeration Unit Service Tool Kit
Use disconnect switch (NOT POWER
CABLE) to disconnect power to unit.
Damage to cable connector pins will
result if cable is used.
Disconnect power from power supply.
Never pressurize refrigerant lines with oxygen. Mixing oxygen with oil will cause
The pressure in a nitrogen cylinder can exceed 2000 psi. A nitrogen pressure
regulator should be used at all times to avoid personal injury.
Nitrogen is an inert gas that can cause suffocation and must be discharged in a
well ventilated area.
An electronic refrigerant gas leak detector should be used to test for leaks.
An electronic refrigerant gas leak detector should be used in accordance with the
procedures contained in TM 9-4940-435-14, "Leak Detector, Refrigerant Gas".
To perform leak testing with the electronic refrigerant gas leak detector, it is
necessary that the system be pressurized with a proportion of refrigerant gas.