Nordson-EFD-794-Service-Replacement-Parts-Manual.pdf - 第4页
794 Series Auger Valve | Service & Replacement Parts Manual 4 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide. Replacement Parts Item…
794 Series Auger Valve | Service & Replacement Parts Manual
3www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Cleaning the Auger Assembly
If the purging procedure detailed above is not sufficient to clean
the valve, disassemble the auger assembly as follows:
1. Pull the auger
1
straight out of the fluid body
4
, being
careful not to damage the spring energized seal.
2. Use your fingernail to carefully pry the auger bearing
2
out of
the fluid body.
3. Use a cotton swab to remove the spring energized seal
3
.
4. Clean all parts using any suitable solvent and brushes or an
ultrasonic cleaning device.
5. Inspect the seal and bearing for signs of wear or damage and
replace if needed.
6. Insert the seal, spring side inward, into the fluid body and use
the auger bearing to gently push it.
7. Fully press the auger bearing into the fluid body.
8. Insert the auger, being careful not to damage the seal.
Auger
Auger bearing
Spring energized seal
Fluid body
1
3
4
2
Valve Part Numbers
Part # Pitch Model Description
7029745 8 794-FR Auger valve, 8 pitch, brush motor, fixed head
7029746 16 794-FR Auger valve, 16 pitch, brush motor, fixed head
Valve Service Procedures (continued)
794 Series Auger Valve | Service & Replacement Parts Manual
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Replacement Parts
Item Part # Kit Contents (Qty.) Item Part # Kit Contents (Qty.)
1 7021981
• Brush-motor valve
cable (1)
5 7021964
• Bearing (1)
2
7021960
Kit, mounting hardware
a. Clamp knob,
4 x 16 mm (1)
b. Barrel clamp (1)
c. Mounting bar, Optimum
(includes screws) (1)
6
7360706
• Spring energized seal (24)
7365978
(not shown)
Kit, seals
• O-ring, 0.180 x 0.035, Viton™, brown (10)
• Auger seal, EPR (1)
• Auger seal, Viton (1)
NOTE: The seals in this kit are alternatives for the spring
energized seal, P/N 7360706.
3 7021973
• Tip retainer (1)
7 7021921
• Fluid body (1)
4
7021988
(8 pitch)
7021978
(16 pitch)
• Auger (1)
8
7365979
Kit, high flow, standard
• Tubing, 1/4" OD x 1/8" ID, PE, 46 cm (1.5 ft) (1)
• 1/4 hose to barrel adapter, PP (3)
• Fitting, 10-32T, female luer, nylon (3)
Kit, high flow, stainless steel
• Tubing, 1/4" OD x 1/8" ID, PE, black, 46 cm (1.5 ft) (1)
• Fitting, 1/8" barb to luer, stainless-steel (3)
• Fitting, 10-32T, 1/8" barb, stainless-steel (3)
• Inlet seal (washer), flat, 0.083 x 0.165 x 0.005", PTFE (10)
NOTE: The components above can be used to replace the
components shown in the illustration.
Auger
Bearing
Spring energized seal
NOTE: This seal can be
replaced with any of the
seals from kit P/N 7365978.
Fluid body
Clamp knob
Brush-motor valve cable
Barrel clamp
Mounting bar, Optimum
(includes screws)
Fitting, push-in, 10-32 x 5/32"
(also available as P/N7021724)
Fitting, 4 mm push-in to luer
(also available as P/N 7021923)
Urethane tubing, 3/32" x 5/32"
(also available as P/N7016761)
Any EFD 1/4" precision
dispense tip
NOTE: These components can be
replaced with the components from
kit P/N 7365979.
6
Inlet seal
8
2b
2c
2a
1
Tip retainer
3
4
5
7
Auger
components
794 Series Auger Valve | Service & Replacement Parts Manual
5www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Notes