DuraBlue II Customer Product Manual - 第105页

Adjusting the set screw + * Service 5-15 Part 1126931_01  2018 Nordson Corporation Pressure Control Valve Replace the Pressure Control Valve X Figure 5 ‐10 Pressure control valve set screw insertion depth NOTE: Screw in…

100%1 / 206
Service
5-14
Part 1126931_01
2018 Nordson Corporation
Replace the Adhesive Filter
1. Relieve the system pressure. Refer to Relieving System Pressure at the
beginning of this section.
2. Use an 8 mm (
5
/
16
-inch) hex-head wrench or an adjustable wrench to
loosen (counterclockwise) and then remove the adhesive filter.
3. Properly dispose of the old filter.
4. Confirm that the O-ring on the new adhesive filter is in good condition
(100-mesh filter is P/N 1028305).
NOTE: 50- and 150-mesh filters are also available (P/Ns 1021941 and
1034720).
5. Screw the filter into the pump body and then tighten the filter to 4.5 Nm
(40 in.-lb).
6. Resume normal operation.
Service Kit, for P/N refer to Section 7, Parts.
Figure 5‐9 Turning the adhesive filter counterclockwise to remove
Adjusting the set screw
+*
Service
5-15
Part 1126931_01
2018 Nordson Corporation
Pressure Control Valve
Replace the Pressure Control Valve
X
Figure 5‐10 Pressure control valve set screw insertion depth
NOTE: Screw in only when valve and pump are warm and material is soft.
1. Ensure the melter is at operating temperature.
2. Relieve system pressure. Refer to Section 1, Safety.
3. Measure and make a note of the insertion depth of the set screw
(dimension X). This way the insertion depth can be replicated after
reassembly.
4. To prevent adhesive from leaking into the valve bore, drain the tank.
Refer to Draining Material from the Tank later in this section as needed.
5. Remove the old pressure control valve.
6. Apply high temperature grease to all threads and O-rings.
7. Slide the valve into the hole and tighten with torque wrench
(15 N•m / 133 in.-lb).
8. Adjust the setting screw to the recorded dimension X.
Turning to the right increases material pressure.
Turning to the left decreases material pressure.
Service
5-16
Part 1126931_01
2018 Nordson Corporation
Pressure/Circulation Control Valve Service Kit
Each kit contains two O‐rings and high‐temperature grease.
Service kit P/N: 394600
Required tools:
Open‐jawed 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.
3. Measure insertion depth. Refer to Pressure Control Valve.
4. Use an open‐jawed wrench to screw out the pressure control valve, then extract with a
pliers.
5. Remove old O‐rings and disassemble and clean pressure control valve. Refer to Section
7, Parts, for a detailed drawing.
NOTE: Disassemble valve only when warm.
6. Install new O‐rings. Apply grease to all threads and O‐rings.
7. Guide pressure control valve into the hole when the melter is warm and tighten with
torque wrench.
Starting torque: 15 Nm (133 in.‐lb)
8. Adjust set screw. Refer to Pressure Control Valve.