FAULT FINDING AND REPAIR
20509 Issue 7 Jan 2018 4-27
(2) Close the valve on the print head.
(3) Place a beaker under the print head nozzle plate. Unscrew the
screws securing the nozzle plate sufficiently to release the pressure in
the print head.
(4) Slowly open the print head valve to release any pressure in the ink
circuit.
(5) Apply a very low air pressure to the accumulator air valve (not more
than 6psi) to force the diaphragm into its normal shape and position.
(6) Remove the air pressure and refit the air valve core.
(7) Close the valve in the print head and tighten the screws securing the
nozzle plate.
(8) Make sure that the ink supply is connected.
(9) Switch on the printer and allow the ink system to re-pressurise.
(10) Bleed and purge the print head.
TP3461-1
Accumulator
Air Valve
Accumulator
Diaphragm
Accumulator
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