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6 | ACS 151 | User information
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Refrigerant extracted from the vehicle A/C system
might be contaminated with moisture, lubricant, dirt
and traces of other gases.
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The ACS 151 does not have any refrigerant identifier
system. If refrigerants other than R134a are used, it
might lead to contamination.
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R134a is colorless, odorless and heavier than air. It
expels oxygen and can flow into repair pits. If the
refrigerant escapes, there is a risk of suffocation in
poorly ventilated rooms or repair pits.
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R134a may not be used in environments with a risk
of explosion. Fire, naked flames and smoking are
prohibited. No welding or soldering is allowed. High
temperatures and UV radiation can cause R134a to
chemically separate. The resulting products cause
coughs and nausea.
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R134a may not be mixed with other refrigerants.
Mixing refrigerants can cause damage to the vehicle
A/C system.
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The ACS 151 must always be monitored during op-
eration. Do not leave the ACS 151 unattended when
it is switched on.
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Vehicle A/C service, using the ACS 151, must be pre-
pared and carried out in such a way that the vehicle
A/C circuit is not opened (for example, radiator or
engine removal).
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The ACS 151 should be positioned with all four
wheels on a flat, vibration-free surface to ensure cor-
rect operation of the load sensors. The ACS 151 can
be prevented from rolling away by applying brakes.
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The ACS 151 must always be transported in a verti-
cal position. Do not invert the ACS 151.
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There are no additional safety provisions for protect-
ing the ACS 151 unit against damage in the event of
natural calamities like earthquakes, fires, floods etc.
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Except for maintenance work, do not remove any
pressurized equipment inside the ACS 151 unit. Ad-
here to the national laws or regulations for ensuring
safety of pressurized equipment.
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F 002 DG9 448
2018-02-01
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We recommend that calibration of refrigerant load
sensor be done at least once every year. Contact Bosch
customer service for calibration of load sensors.
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The ACS 151 must be regularly inspected by service
personnel or the approved authorities to ensure
safety of the unit.
Warning - Risk of frostbite in the event of
refrigerant leakage!
If refrigerant escapes, there is a risk of frost-
bite to the hands and body.
¶
Wear protective goggles.
¶
Wear protective gloves.
¶
Ensure that the HP and LP hoses are not
damaged.
¶
Ensure that the quick couplers are tightly
fixed to the hoses.
Warning - Risk of frostbite during removal
of service hoses!
If refrigerant escapes, there is a risk of
frostbite to the hands and body.
¶
Carefully disconnect service hoses as all
hoses can contain pressurized
refrigerant.
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Connect the power cable only to a properly ground-
ed electrical outlet.
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Do not shut off the valves on the R134a tank when
the ACS 151 is in operation.
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For the purpose of safety, it is recommended to use
an Earth Leakage Circuit Breaker (ELCB) with the
following specifications:
Parameter
Specification
Rated voltage
230 VAC +/- 10%
Rated frequency
50 Hz
Rated current
8 A
Rated trip current
30 mA
Tripping curve
C
2.5
Safety devices
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Pressure switch - Switches the compressor off if the
normal operating pressure is exceeded.
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Safety valve: Operates when the design pressure is
exceeded.
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Fuse: Interrupts excessive current flow into the
ACS 151.
Bosch Limited
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