Table of Contents
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Task
Relieving system pressure
Lockout external communications
Cleaning the exterior of the melter,
hoses, and guns
Replacing the filter
Cleaning the tank
Removing the melter from the
sub‐base
E 2014 Nordson Corporation
WARNING! Allow only qualified personnel to perform the following tasks.
Follow the safety instructions in this document and all other related
documentation.
Table 5‐1 describes the preventive maintenance tasks required to keep
ProBlue melters operating within their specified limits and to prevent
equipment malfunctions. For information about maintaining optional
equipment that was supplied by Nordson, refer to the instructions provided
with the equipment.
If the melter stops operating or is operating incorrectly, refer to Section 6,
Troubleshooting, for information about diagnosing common problems and
performing corrective maintenance.
Table 5‐1 Preventive Maintenance Tasks
Frequency
Before performing any maintenance
task that requires opening a
hydraulic connection or port
Before performing any maintenance
task
Daily
S
As needed
S
When changing the type or grade of
hot melt
S
When changing the type or
grade of hot melt
S
When excessive charring occurs
S
As needed
Maintenance
Section 5
Maintenance
Reference
Relieving System Pressure
Locking Out External
Communications
Cleaning the Melter
Replacing the Filter
Cleaning the Tank
Removing the Melter from the
Sub‐base
Part 1024496_06
5-1
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Table of Contents
Troubleshooting
Need help?
Do you have a question about the ProBlue P4 and is the answer not in the manual?
Questions and answers
The pump of the glue bath is not pumping the glue out to the pipes and to the glue gun, what can i do to get the pressure?
To fix the glue pump issue on a Nordson ProBlue P4 and restore pressure to the pipes and glue gun, follow these steps:
1. Check for Leaks – Locate and repair any air leaks in the system.
2. Verify Air Pressure – Ensure the air pressure to the pump is greater than 0.7 bar (10 psi) and adjust if necessary.
3. Inspect the Tank – Confirm that the tank is not empty; if it is, fill it with adhesive and allow it to reach operating temperature.
4. Check the Isolation Valve – Ensure the shut-off valve is open.
5. Inspect the Return Port – If hot melt is returning to the tank through the return port behind the tank screen, check and clean the tank outlet and crossover tube or replace the manifold.
6. Replace the Pressure Discharge Valve – If necessary, replace the pressure discharge valve with P/N 1028308.
Following these troubleshooting steps should help restore pressure and proper function to the glue pump and gun system.
This answer is automatically generated
What is F4/A problem?
What is A/ F4 Foult
An F4 fault on the Nordson ProBlue P4 glue machine means the system has detected a fault that can be classified as either fatal or nonfatal.
- Fatal F4 Fault: The fault LED stays on, and the melter stops functioning completely.
- Nonfatal F4 Fault: The fault LED turns on for five seconds, but the heaters and pump continue to operate normally. However, nonfatal faults affect the internal clock and optional I/Os.
The fault is recorded in the fault log, and further troubleshooting details can be found in Section 6 of the manual.
This answer is automatically generated
Reason why Nordson Problue 4 leaking adhesive from the back?
Our glue keeps on feeling when level in the glue tank is ok
The glue may keep leaking from the Nordson ProBlue P4 even when the tank level is okay due to a leak in the system. The manual advises locating and repairing the leak. Additionally, the discharge valve may be faulty and need replacement, or the outlet of the tank and crossover tube may need cleaning.
This answer is automatically generated
Our Problue 4's pump is reciprocating when no glue is being dispensed. Roughly once per second. No glue hoses or tips are leaking. unit is still working for now.
The Nordson ProBlue P4 pump may be reciprocating without dispensing glue due to a nicked, cut, deteriorated, or deformed pump seal. The issue could have occurred during reassembly. It is recommended to apply Parker lubricant (P/N 273139) and ensure proper reinstallation of the O-ring and pump seal after the piston is reinstalled but before installing the insulator and pump frame.
This answer is automatically generated