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6. Main principles and interconnections
6.1 The circuit to flush must be tight, free from leaks and from internal blocks.
IMPORTANT!
Please check the absence of internal blocks by flowing some nitrogen or air through the circuit,
before starting the flushing operations. The pressure of the solvent and the EkoFlush unit may
not be sufficient to remove the blocks and the flushing operation will not be completed, resulting
in loss of solvent.
6.2 Connect the K572 directly to the circuit, by-passing the compressor.
IMPORTANT!
It is necessary to disconnect the compressor before flushing, or the oil present in the
compressor will be washed off!!
6.3 Large circuits need to be flushed in sections, especially circuits with several branches.
6.4 All throttling elements (capillary tubes, expansion valves, pressure limiters) need to be replaced
by standard pipes or “by-passed”.
6.5 Filters must be replaced by standard pipes; otherwise they will be immediately filled up with
impurities collected in the circuit.
6.6 Remove or turn upside-down the accumulators (receivers).
If portions of SOLSTICE
®
PF-C will end up in accumulators, the flushing procedure will become
longer or solvent will remain trapped inside.
6.7 The back side of the EkoFlush K572 unit and the solvent cylinder must to be connected with the
following hoses:
1/4“ SAE x 90 cm – blue
- vapor outlet on the solvent cylinder – BLUE
3/8“ SAE x 90 cm – red
- liquid outlet on the solvent cylinder - RED
NOTE:
Depending on the cylinder you are using, you may need an adapter for these
connections. Please refer to your local supplier of SOLSTICE
®
PF-C.
NOTE:
Hoses must be installed with the valve-end close to the cylinder of the solvent.
6.8 Use the belt to secure the solvent cylinder to the EkoFlush K572 and prevent it from falling onto
the operators.
6.9 For the flushing of complicated circuits, it’s kindly suggested to use a scale to check the quantity
of SOLSTICE
®
PF-C at the beginning of the operations and the solvent recuperated at the end
of the process. This check will confirm the total extraction of the solvent from the cleaned circuit.
6.10 Before starting the flushing, please verify that the pressure in the solvent cylinder is between 6
and 8 bar (max 8 bar). This check can be done after having connected the hoses, by looking at
the high-pressure manometer (pos. 13 – see Picture 4) without switching on the K572 Unit. The
valve on the liquid outlet of the cylinder and the relevant valve on the hose must be open when
this test is in progress. Maximum permissible pressure of 8 bar is indicated by a red line on the
high-pressure manometer (pos. 13)!
The refilling of nitrogen in the refrigerant cylinder is permitted using appropriate equipment.
Please consult your local supplier of the SOLSTICE® PC-C solvent in case of need.
