TL;DR
Fabric rope tangles are usually caused by over-loading the vessel, an impeller speed mismatch, or a fabric join failure. Clear the tangle manually, check the load weight, and verify transport speed.
What you might see
- drive motor overload alarm
- machine stopped with impeller stall
- fabric not circulating during cycle
- fabric damage in one section after cycle
Likely causes
Fabric batch weight above the machine capacity causing poor circulation
Impeller or transport nozzle speed too low for the fabric weight and type
Fabric seam or join coming undone and folding into a knot inside the vessel
Foam buildup in the bath reducing the hydrodynamic transport force
Required tools
- High-temperature gloves
- Fabric weight scale
- Anti-foam dosing kit
- Sewing kit for fabric join repair
Safety first
- The vessel contains hot water and chemicals under pressure during operation. Never open the lid without confirming zero pressure and a safe temperature.
- Reactive dye baths may contain alkali at high pH. Wear gloves and eye protection when reaching into the vessel.
Procedure
- 1
Stop the machine and allow the bath temperature to cool below 50 degrees C before opening any access port.
- 2
Depressurize the vessel following the standard procedure. Confirm the pressure gauge reads zero before opening the lid.
Warning: Never open the vessel lid under pressure. The dyeing vessel operates above atmospheric pressure at high temperatures. - 3
Open the front access port and carefully pull the fabric rope by hand. Work slowly and do not force the fabric if it is tightly tangled.
- 4
Identify the location of any tangle or loose seam. Re-sew any open fabric join before reloading.
- 5
Verify the dry fabric loading weight against the machine capacity label. Remove fabric if the batch is over the rated load.[1]
- 6
Check the transport nozzle or impeller speed setting against the parameter recommendation for the fabric type and weight.[1]
- 7
Add anti-foam agent to the bath if foam is visible inside the vessel, then restart the cycle at a lower speed for the first 10 minutes.
Sources
Thies Thies iMaster H2O Dyeing / Finishing Range general technical documentation, Thies
Thies iMaster H2O dyeing machine general fabric loading and transport procedures (general)
More guides for Thies Thies iMaster H2O
How to fix dye bath temperature deviation on a Thies iMaster H2O
Temperature deviation is usually a failed heating element, a blocked heat exchanger, or a thermocouple calibration drift. Check the heating system and sensor calibration before adjusting the recipe.
How to fix shade variation between dye batches on a Thies iMaster H2O
Shade variation between batches is usually a dosing pump calibration error, a liquor ratio change, or a water quality change. Verify the liquor ratio and dosing accuracy before changing the recipe.
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