Maintenance
5‐10
P/N 213828_11
2014 Nordson Corporation
VersaBlue_PPA
Pressure Control Valve
ATTENTION: Hot! Risk of burns. Wear appropriate protective
clothing/equipment.
ATTENTION: System and material pressurized. Relieve system pressure.
Failure to observe can result in serious burns.
NOTE: Screw in/out only when valve is warm and material is soft (approx.
70°C/158°F, depending on material).
Installing Service Kit
Each kit contains two O‐rings and high‐temperature grease.
Mechanical pressure control valve Pneumatic pressure control valve (option)
Required tool:
Open‐end wrench, size 24
Pliers
Torque wrench
Required tools:
Open‐end wrench, size 27
Pliers
Torque wrench
1. Heat melter to operating temperature.
ATTENTION: Hot! Risk of burns. Wear appropriate protective
clothing/equipment.
2. Relieve melter pressure.
-
3. Close compressed air supply.
4. Refer to Measuring Insertion Depth
4. Unscrew air hose.
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
separate Parts List 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 bore when the melter is warm and tighten with
torque wrench.
Torque: 15 Nm (133 lbin)
9. Refer to Adjusting Setting Screw
9. Attach air hose.
-
10. Open compressed air supply again.
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