Push / Pull Method - Bosch RG8.0 Originalbetriebsanleitung

en 32 | RG8.0 / RG4.0 | Operation
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After completion of recovery, if the RG8.0 / RG4.0
stops due to low inlet pressure and the
A/C / refrigeration system has refrigerant left in it,
the RG8.0 / RG4.0 will restart automatically if a
significant pressure rise is detected.
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To maximize recovery rates use the shortest possible
length of 3/8" or larger hose. A hose not longer than
1 meter is recommended. Always remove all unnec-
essary hose core depressors and Schrader valves
from port connections (using the proper valve core
tool) for maximum throughput. Deformed rubber seals
and core depressors in hoses and faulty or unneces-
sary Schrader valves can restrict flow by up to 90%.
6.1.3

Push / pull method

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Fig. 4: Push / pull recovery
1 Liquid port/ High side port
2 A/C or refrigeration system
3 Vapour port / Low side port
4 Vapour/ Low side hose
5 Inlet hose
6 Refrigerant tank.
7 Scale
8 Sight glass
9 Liquid/ High side hose
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The push / pull method works with large systems
where liquid refrigerant is readily accessible. Do not
use this method on systems that contain less than
7 kg of refrigerant. It is not possible to completely
empty a system using the push / pull method. After
liquid is removed, it will be necessary to switch
connections and follow the procedure for normal
recovery to remove remaining refrigerant from the
A/C or refrigeration system.
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F 002 DG9 H00 2018-08-17
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When using the push / pull method, you must use a
scale to prevent overfilling the storage tank. Once
the push / pull siphon is started, it can continue and
overfill the storage tank even if the tank is equipped
with a float level sensor. The siphon can continue
even when the RG8.0 / RG4.0 is turned off. You
must manually close the valves on the tank and the
RG8.0 / RG4.0 to prevent overfilling the recovery
tank.
Bosch Automotive Service Solutions GmbH
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