Carrier 40 Operation & Service Manual page 4

SWITCH (see Figure 1-1) in the OFF position. To ensure unit is without power, remove power plug
and remove battery negative cable.
Ensure power to the unit is OFF and power plug is disconnected or vehicle engine is OFF and nega-
tive battery cable is disconnected before replacing the compressor.
Do not use a nitrogen cylinder without a pressure regulator. (See Figure 4-3.) Cylinder pressure is
approximately 2350 psi (160 bar). Do not use oxygen in or near a refrigerant system as an explosion
may occur.
If starting unit for the first time after installation the compressor pressure regulating valve will need
to be reset (refer to paragraph 4.15)
If starting unit for the first time after installation or starting after adding/removing of an optional fea-
ture or if Owners operating parameters have changed the Configuration will need to be reset (refer to
paragraph 2.9)
Under no circumstances should anyone attempt to service the microprocessor (see section 4.17).
Should a problem develop with the microprocessor, contact your nearest Carrier Transicold dealer
for replacement.
Refrigerant R404A must be charged as a liquid. Refrigerant R404A is a blend. Charging as a vapor will
change the properties of the refrigerant.
Do not damage or over tighten the enclosing tube assembly. Also make sure all parts are placed in
the enclosing tube in proper sequence to avoid premature coil burn-out.
62--10630
WARNING
WARNING
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
Safety-2