Index revision : C - November 2017 35 7030
6.7. 1 PV Block and Manifold Block
6.7.1. Disassembly
• Remove PPH 308.
• Loosen the screw securing the 1 PV block onto the tie-rod.
• Disconnect the hoses between 1 PV block and Manifold block.
• Uncrew the tie-rod (see § 2 page 17).
• Unscrew tie-rod from Manifold block.
• Extract tie-rod from 1 PV block.
• If necessary, remove Manifold block restrictor (this requires the injector / injector holder
assembly to have been removed).
6.7.2. Reassembly
• Refit or replace the restrictor, depending on the product viscosity.
• Check the condition of the Manifold block components (seals, solvent nozzle, coupling)
and change if required.
Check that there are no cracks on the 1PV block and especially around fitting 31.
WARNING : If the plastic coupling is replaced, PTFE tape will need to be wrapped around the
thread of the new plastic coupling (2 to 3 turns approx). Beware to avoid
overlapping the tape onto the coupling surface.
• Check that all seals are in place on the Manifold block.
• Insert tie-rod into 1 PV block and screw onto Manifold block.
• Lock tie-rod to support, tightening the screw fully in.
• Connect the hoses between 1 PV block and Manifold block.
• Lock 1 PV block to tie-rod, by tightening the nylon screw M5 x 10.
6.8. Microvalves
see RT Nr 6021
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