AG900+ and AG900+S Applicators Customer Product Manual.pdf - 第24页

AG − 900+ and AG900+S Applicators 20 Part 1098464A  2009 Nordson Corporation Repair W ARNING! Allow only personnel with appropriate training and experience to operate or service the equipment. The use of untrained or in…

AG−900+ and AG900+S Applicators

 2009 Nordson Corporation

Part 1098464A

Problem Possible Cause Corrective Action

3. Applicator or

swivel fails to

heat.

Loose connections Disconnect and lock out

power. Remove heater cover

and inspect wires. Restore

any loose connections.

Open or shorted heater Measure cold resistance

across the heater with a

VOM. 0 ohms means the

heater is shorted. Infinite

ohms means the heater is

open.

Open or shorted RTD Measure cold resistance

across the RTD with a VOM.

0 ohms means the RTD

shorted. Infinite ohms means

the RTD is open.

Short circuit in the cordset Measure cold resistance

between connector pins and

green ground lead in the

heater module. 0 or very low

resistance means the cordset

shorted. Replace cordset.

4. Bead is too large

or too small.

Dispense pressure set too

high or too low

Adjust material supply

pressure (if applicable).

Turn regulator adjustment

screw (if installed). If the

bead is still too large or too

small, replace the regulator

spring or adjust needle stroke.

5. Bead is

dispensed with a

hammerhead

(large to small).

Regulator operating outside of

normal pressure range

Turn regulator adjustment

screw counterclockwise. (If

applicable)

Worn regulator seat Rebuild regulator (If

applicable). Refer to the

Repair section.

AG−900+ and AG900+S Applicators

Part 1098464A

 2009 Nordson Corporation

Repair

WARNING! Allow only personnel with appropriate training and

experience to operate or service the equipment. The use of

untrained or inexperienced personnel to operate or service the

equipment can result in injury, including death, to themselves and

others, and damage to the equipment.

WARNING! Disconnect equipment from line voltage. Failure to observe

thiswarning may result in personal injury, death, or equipment damage.

This section provides procedures for replacing AG-900+/AG900+S parts.

Replace the Needle/Nozzle

Disassembly

To disassemble your applicator to replace the nozzle/needle assemblies, perform the

following procedure:

1. Heated applicators: disconnect and lock out input electrical power from the applicator.

NOTE: Do not remove the module from the regulator body or applicator adapter body

unless applicator location prohibits easy access.

2. If location requires the AG900+/AG900+S module to be removed from the regulator or

adapter block to access components, do so by removing the two socket head screws

from the front of the module and pulling it free.

NOTE: Module must be pulled straight away to avoid damage to locating dowel pins

on back face of module.

AG−900+ and AG900+S Applicators

 2009 Nordson Corporation

Part 1098464A

Figure 7: AG-900+/AG900+S Applicator Assembly

1. Socket head screws

2. Air cap

3. Spring

4. Module body with piston/cartridge and needle

assemblies installed

5. O-ring

6. Nozzle flange

7. Nozzle

8. Back-up ring

9. Large o-ring (top of

piston/cartridge assembly)

3. See Figure 7.Remove the four socket head screws (1), from the air cap (2) and then lift

the cap and spring (3) free of the applicator module.