Installing Service Kit - Nordson VersaBlue VBN 50 Manual

5-12
Maintenance
Pressure Control Valve

Installing Service Kit

Fig. 5-11
Mechanical pressure control valve
Service kit P/N: 394600
Required tools:
Open-end wrench, size 24
Pliers
Torque wrench
1. Heat melter to operating temperature.
WARNING: Hot! Risk of burns. Wear appropriate protective
clothing/equipment.
2. Relieve melter pressure.
−
4. Refer to Measuring Insertion
Depth
5. Use an open-end wrench to screw out the pressure control valve, then
extract with a pliers.
If the tank is not empty:
Collect any adhesive that may escape (bowl).
Quickly screw in a replacement pressure control valve or a plug, then perform
maintenance work.
6. Remove old O-rings and disassemble and clean pressure control valve.
Refer to section Parts for detailed drawing. of the valve
NOTE: Disassemble valve only when warm.
7. Install new O-rings. Apply grease to all threads and O-rings.
8. Guide pressure control valve into the hole when the melter is warm and
tighten with torque wrench.
Torque: 15 Nm (133 lbin)
9. Refer to Adjusting Setting Screw
−
P/N 7146386A
(contd.)
Each kit contains two O-rings and high-temperature grease.
Service kit P/N: 394600
Required tools:
Open-end wrench, size 27
Pliers
Torque wrench
3.
4.
9.
10. Open compressed air supply
again.
VBN w/o Control System
Pneumatic pressure control valve (option)
Close compressed air supply.
Unscrew air hose.
Attach air hose.
E 2008 Nordson Corporation