JOYA TECH Reminder丨Pre-Holiday Shutdown Maintenance Guide for PUR Machines

Jan. 14, 2025

To ensure optimal performance and longevity of your PUR equipment during seasonal breaks, follow these maintenance steps:

1 Prepare PUR Cleaning Agent

Pour 3–5 kg (approximately one-quarter of an empty PUR adhesive drum) of PUR cleaning agent into a clean, empty drum.

2 Activate Heating

Power on the heating systems for the pressure plate, hoses, and adhesive gun, setting the temperature to 150°C.

3 Lower the Adhesive Plate

Step 1: Apply lubricant evenly on the adhesive plate’s sealing ring.
Step 2: Place the drum containing the PUR cleaning agent beneath the pressure plate.
Step 3: Close the exhaust valve.
Step 4: Press the plate descent button to slowly lower the adhesive plate until it aligns with the drum opening. Adjust gently for alignment, then continue lowering to the drum’s base.

4 Clean the Discharge Valve

After heating for 10 minutes (until the cleaning agent melts), open the exhaust valve briefly to allow residual adhesive to drain, then close it.

5 Initiate Cleaning Cycle

Loosen the hose and adhesive shaft screws.Activate the adhesive dispensing mode to purge remaining PUR adhesive from the gun or tank.
Note: Initially, expelled adhesive will appear white, gradually transitioning to blue. When the fluid turns fully blue, the system is clean.

6 Finalize Equipment Cleaning

Reattach the hose to the adhesive shaft and flush it with cleaning agent.Power down the machine, disconnect electricity, and perform a thorough cleanup.