Nordson_EFD_P-Jet_SolderPlus_Operating_Manual.pdf - 第20页
Liquidyn P-Jet SolderPlus Jet Valve 20 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide. Install a Nozzle Heater (Optional) The nozzle hea…
Liquidyn P-Jet SolderPlus Jet Valve
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2. If you have not already done so, turn the force screw fully
counterclockwise as follows (to eliminate any spring force
on the tappet):
• Completely loosen the raster element.
• Turn the force screw counterclockwise until it stops.
• Completely tighten the raster element to secure the force
screw.
Force
screw
Raster
element
3. • Remove the nozzle, if present.
• Install the concentricity tool onto the fluid body where the
nozzle would mount.
• Install the nozzle retaining nut to secure the concentricity
tool.
4. • Turn the force screw one (1) click counterclockwise so
that there is a low spring force pushing the tappet onto
the concentricity tool.
Force
screw
Raster
element
5. • Place the valve upright under a measuring system (such
as a digital microscope with measurement capability).
• Adjust the magnification to 100 times (100x) and focus on
the flat surface of the tappet, which is at the same height
as the concentricity tool.
Tappet
Concentricity
tool
6. • Use the measuring system’s center-to-center tool to
measure the concentricity of the tappet to the inside ring
of the concentricity tool.
NOTE: The three holes in the concentricity tool act as
windows to view the inner diameter.
7. • Repeat the concentricity measurement three times
by repeating steps 1–6 (including turning the stroke
adjustment knob back when removing / installing the
concentricity tool).
• Average all three measurements. An acceptable tappet
concentricity is <75 µm.
Set the Tappet Concentricity (continued)
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Install a Nozzle Heater (Optional)
The nozzle heater is an optional component; however, because most solder applications require a nozzle heater,
it was included as a step under “Assemble the Valve (Initial Assembly)” on page15. This section is included for
additional reference as needed.
The illustration below shows the installation of a nozzle heater. A nozzle heater controls the temperature of the
material in the nozzle. The nozzle is secured minimally by the nozzle heater with an elastomer (heater O-ring)
between it and the valve. The nozzle is fully secured by the retaining nut.
You will need the following items:
• Nozzle
• Nozzle heater
• Nozzle heater O-ring (NBR or EPDM)
• Retaining nut
• Heater key
• Heater cable
Refer to “Nozzle Heaters” on page39 for component part numbers.
NOTES:
• The nozzle retaining nut predominantly secures and seals the nozzle in place. The heater remains in contact with
the retaining nut through pressure supplied by a heater O-ring, which creates a partial space between the heater
and the fluid body. This ensures thermal contact and allows the heater to rotate slightly even when the retaining
nut is fully tightened.
• The image below is based on a Liquidyn P-Jet valve with a standard nozzle heater. The mounting process is the
same for all valves.
NOTES:
• The electrical connection for the
heater is supplied through the
provided heater cable.
• To attach or release the heater
cable, loosen or tighten the knurled
nut by hand. Be sure to connect
the heater cable plug in the correct
orientation.
Nozzle
Nozzle heater O-ring
Nozzle heater
Nozzle retaining nut
Heater key
Torque for a steel nozzle: 1.2 N•m (10.6 in.-lb)
Liquidyn P-Jet SolderPlus Jet Valve
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Mount the Valve
Mount the valve using either of the following options.
Standard Mounting
Secure the valve using two M3 x 25 hex screws (customer-supplied).
Four mounting holes are available to allow for adjustment.
Quick-Mounting
An optional quick-mounting bracket is available for faster valve
removal and installation. Once the valve is installed using the quick-
mounting components, it can be easily removed or installed using
the quick-release fastener. Refer to “Quick-Release Valve Mounting
Components” on page38 for the quick-mounting kit part number.
You will need the following items:
• Vibration decoupler
• Quick-release fastener
• 2 M4 hex screws (minimum length: 10 mm)
• Hex wrench, size 2.5
• Hex wrench, size 3.0
Example of the quick-release mounting option
M3 x 30
mounting
screws
Vibration decoupler
Quick-release fastener
Hook (hooks into the
quick-release fastener)
M4 x 30 mounting
screws (for mounting
onto a socket; not
included)
Lever (secures the hook)
M3 mounting
hole locations