Common Faults and Troubleshooting for High-Temperature Melt P

1. Insufficient Flow

Possible Causes: Blocked inlet, low pressure, packing leakage

Solutions: Clear the pipeline, tighten the seals, verify the speed

2. Pump Body Seized and Not Rotating

Possible Causes: Seized shaft sleeve, foreign objects stuck in gears

Solutions: Continuously heat for ≥2 hours (Note: Ensure safety during heating to avoid causing other issues), disassemble and remove foreign objects

3. Abnormal outlet pressure

Possible Causes: Blocked pipeline, gear wear

Solutions: Clear the pipeline, replace the gear set or bearing sleeve

4. Melt leakage

Possible causes: Failed shaft seal, aged cover plate seal

Solutions: Cool with cooling water (Note: Ensure the cooling water system is functioning properly to prevent leaks), replace the seal assembly or use high-temperature sealant

5. Product bubbles/black spots

Possible causes: Insufficient front-end exhaust, carbon buildup in pump dead zones

Solutions: Enhance drying exhaust, improve pump body smoothness, and adopt a dead-zone-free design

6. Abnormal temperature rise

Possible causes: Thermocouple failure, friction overheating

Solutions: Calibrate the temperature control system, install air cooling or water cooling systems to reduce temperature

Note:

Before performing any maintenance or troubleshooting, ensure that the power supply has been disconnected and necessary safety measures have been taken. If unsure about the procedure or the issue is complex, seek assistance from a professional.

Email: sale@meltpump.com

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