Nordson-EFD-Series-450-Instructions - 第11页
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists 11 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide. Air Cylinder — #770226…
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists
10 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
#7701971 Hand Held — Electric Momentary Switch (24 Volt)
P/N Ref. # Qty. Description
— 90 1 Handle / Aluminum / Cartridge Option
7702317 91 1 Trigger for Mount H or E
— 92 1 Trigger Bolt, 8-32 x 3/4" long
— 93 1 Trigger Guard for 400 / 450 Switches
— 94 1 6-32 x 5/16" FHSHCS for 400 / 450 Switches
— 95 1 6-32 x 1/2" FHSHCS for 400 / 450 Switches
— 96 1 Safety Lock for 400 / 450 Switches
— 97 1 1/2" OD x 1/16" O'Ring for 400 / 450 Switches
— 98 2 SHCS 10-24 x 1/2" long for Mount S, E or H
7702376 99 1 Momentary Switch Assembly for 400 / 450 Series
7702378 100 1 Complete Push on / off Switch Assembly for 400 / 450 Series
— 101 1 Protective Rubber Boot for 400 / 450 Switches
— 102 1 CS Flat Washer for 400 / 450 Switches
Mount (continued)
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists
11www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Air Cylinder — #7702265 Hardened SS Shafts
NOTE: Prior to assembly lubricate all
O-rings with auto grease.
P/N Ref. # Qty. Description
— 70 1 Snuff-Back Adjustment Screw
— 71 2 BHCS 1/4-20 x 1/2" long
7702402 72 1 Aluminum Back Plate
— 73 1 Brown Viton O-Ring (Back Plate)
— 74 1 Brown Viton O-Ring (Piston)
7702400 75 1 Replacement Piston and Hardened SS Shafts
7702074 76 1 Replacement Body with Front Seals
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists
12 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
AV-RK-TGT #7704093
Ref. No. Qty. Description
13 2 PTFE Front Seal
3 6 UHMPE U-cup & SS Spring
6 6 PTFE encapsulated O-ring
AV-RK-TPV #7704095
Ref. No. Qty. Description
13 2 PTFE Front Seal
3 6 PU U-cup & Viton O-ring
6 6 Viton (brown) O-ring
AV-RK-TTT #7704096
Ref. No. Qty. Description
13 2 PTFE Front Seal
3 6 PTFE U-cup & PTFE O-ring
6 6 PTFE encapsulated O-ring
Spare Parts Kits
450 Autogun Repair Kits
Each kit contains a complete set of lip seals, O-rings, and front seals.
450 Autovalve with Snuff-Back
Snuff-Back Adjustment: Advancing (clockwise turn) the snuff-back adjustment screw reduces snuff-back, retracting it
(counterclockwise) increases the snuff-back. Since excessive snuff-back action can cause plugging of the valve, adjust for
minimum snuff-back as follows: With the pumps on and valve in the “closed” position, advance the adjustment screw until
material begins to drool out of the static mixer (acting as if the valve is open). Then retract the screw just until fluid stops, at
the minimum snuff-back position. If material drools or drips during operation, slightly increase the snuff-back until the desired
action is achieved.
Locking nut
Connect air to close
Snuff-back
adjustment
screw
Connect air to open
NOTE: Each 450 AutoGun comes with (2) front seals to be
discarded.
Consult Factory for additional seal combinations.