Repair
5-15
Part 1102771A
E
2010 Nordson Corporation
Regulator Replacement
(contd)
1. Disconnect the 4-mm electrode air wash tubing from the electrode air
wash output. Disconnect the air tubing from the other outputs and plug
them with 8-mm and 6-mm plugs.
2. Connect the manometer to the electrode air wash fitting by removing the
orifice assembly from the clear 4-mm tubing and plugging the tubing into
the fitting.
3. On the controller interface, set the flow-rate and atomizing air flows to
1 SCFM (1.70 m
3
/h).
4. Point the spray gun into the booth and trigger the gun on. The
manometer should show a pressure reading.
5. Pull out the regulator knob and adjust it to slightly more than 85 psi (5.86
bar). The manometer reading should occasionally bounce higher, but
never fall below 85.
6. Push in the regulator knob to lock the setting.
iFlow Module Repair
The iFlow module consists of a circuit board and air manifold, on which are
mounted two proportional valves, transducers, and four solenoid valves.
CAUTION:
The module circuit board is an electrostatic sensitive
device (ESD). To prevent damage to the board when handling it, wear a
grounding wrist strap connected to ground. Handle the board only by its
edges.
Repair of the flow module is limited to cleaning or replacing the proportional
valves, and replacing the solenoid valves, check valves, and fittings. Field
replacement of other parts is not possible, due to the need to calibrate the
module at the factory using equipment not available to the field.
Testing iFlow Modules
Use the iFlow Air Flow Verification Kit to check the output of the proportional
valves for correct air flow output. Use the following procedure:
CAUTION:
Handle the orifice assembly with care. Rough handling can
damage the orifice and affect the manometer reading.
1. Disconnect the air tubing from the flow or atomizing air fitting and plug in
the orifice assembly.
2. Set the controller Powder Flow mode to Classic Flow, then set the flow
of the function (flow or atomizing air) you are checking to the lowest
value in the
Flow to Pressure
chart on page 5-17.
3. Turn on the manometer. If desired, change the scale to read bar instead
of psi. Refer to manometer documentation for instructions.
4. Point the spray gun into the booth and trigger the gun on.
Содержание 1102771A
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