Common faults and troubleshooting methods of gear pumps for hot melt adhesive machines

2021/06/04

Today we will explain some common troubleshooting methods(hot melter), which can be easily solved by ourselves.

1. Small glue flow

The general reasons are:

The amount of glue in the melting tank is insufficient;

The filter inside the melting tank is clogged, causing poor glue suction;

Failure of the return valve;

The viscosity of the glue is too high or too low;

The gear pump is internally worn and internal pressure is leaking.

 

elimination method:

Heat and melt the glue in the melting tank to a reasonable position;

Clean the filter screen of the melting tank to remove the blockage;

Check whether the sealing ring of the return valve is damaged, whether the valve seat and valve body are worn, if there is wear, it needs to be replaced;

Set the appropriate temperature of the glue tank to make the hot melt glue be used in the best condition;

As a result of insufficient wear resistance of gears, shafts, and pump bodies, it may cause wear and tear. It is necessary to replace corresponding parts or replace the entire gear pump.