Repair7-10 1999 Nordson CorporationAll rights reserved107 962HIssued 11/99Manual 21-19After you replace any parts and perform the cleaning procedures for theAN-8 Plus gun, use this procedure to complete the assembly of the gun.1. See Figure 7-2. Install the needle (33) on the replacement packingcartridge (32).2. Gently pull on the ends of the packing cartridge to expand thebellows, and then slide the gasket (6) and spacer (7) over thecartridge/needle assembly.3. Install the packing cartridge/needle assembly with the gasket andspacer into the threaded bore of the gun extension (30).4. Make sure that the end of the needle is visible through the valveseat (34) orifice, and then perform the following steps:a. Install the seal retainer (8) over the packing cartridge/needleassembly shaft.b. Screw the seal retainer into the gun extension, and then tighten itwith the special tool.c. Position the gun extension in the operating (upright) position, andmake sure that the needle is still in place in its seat.5. Thread the trigger puller (12) onto the shaft of the packingcartridge/needle assembly. Do not tighten it completely, allowing foradjustment later.6. Install the compression spring (13) into the trigger puller (12).7. Make sure that the cable bore of the gun is clean and dry. Clean thecable core and cable with the cable cleaning kit.8. See Figure 7-1. If you have not replaced the insulating tube (4) andapplied dielectric grease to the gun, perform the following steps:CAUTION: After disassembling the gun or removing the cablefrom the gun, always apply dielectric grease to the gun. If youdo not apply dielectric grease, the resistor cable or gunextension can prematurely fail due to arcing or high-voltage,corona burn-through. When correctly applied, dielectric greaseprevents coronal discharge and arcing around the contactpoints of the resistor, spring, and cable end.a. Clean as much dielectric grease from the insulating tube aspossible. Use a round brush to clean the grease from the tube.7. Assembling the GunInternal Parts

Issued

Manual

Introduction

Personal Safety

High-Pressure Fluids

Fire Safety

Halogenated Hydrocarbon Solvent Hazards

Safety Labels

H Manual

Options

Typical Heated Circulating System

Theory of Operation

Installing the Cable to the AN-8 Plus Gun

Installing the Gun

Installing the Air Flow Switch, Hoses, and Fittings

Securing the Hoses and Gun

Checking the Gun After Installation

Installing a New Extension Resistor Kit and Cable

Daily

Gun Maintenance

Mechanical Problems

Electrostatic Problems

Disassembling the Gun

Internal Parts

Replacing the Extension Resistor Service Kit and Cable

Replacing the Resistor Only

Replacing Parts and Cleaning the Gun

Assembling the Gun

External Parts

Final Assembly and Adjustments

Gun Assembly

Recommended Spare Parts

Air Valve Service Kit

Handle Replacement Kit

Extension Service Kit

Optional Isocoils

High-Conductivity Isocoil

specifications

Air Quality

Nordson AN-8 Plus Customer Product Manual

AN-8 Plus