To start the rings initially, wipe them with an oiled cloth or felt pad, using one of the recommended lubricants.
We recommend that only steel travellers be used for running in PSM Standard, PSM 70 and PSM 100 rings.
It is important when starting the running in that a fine yarn count is used, and the traveller size selected should be the one that gives the minimum tension necessary in order to wind the required amount of yarn onto the bobbin.
We recommend that during the initial running in the spindle speed should be reduced to 70-75% of the normal operating speed for the first 50 hours and then gradually increased until the normal operating speed is attained after a total of 200 hours.
The frequency with which steel travellers are changed during the running in period will vary according to the traveller weight, ring diameter and traveller speed.
The traveller change can best be determined by visual examination of the used travellers. We would recommend that several travellers should be inspected for wear after each doff to determine when the next change should take place. The travellers must be changed before they show signs of severe wear or overheating.
The running in procedure is complete when an even or normal traveller wear pattern has been achieved.
When running in with steel travellers it is important to ensure that the size of the traveller used does not exceed the maximum weight recommended for the particular depth of ring, otherwise pore closure may result.
Similarly, when using PSM 40 and 21C rings the size of the Temlon traveller should not exceed the maximum weight.
It is an essential part of the running in that PSM Standard, PSM 70 and PSM 100 rings must be cleaned after the traveller change. The dirt and metal dust deposited on the 3 bearing surfaces should be cleaned with a dry, soft cloth and then wiped with a clean felt pad soaked in the recommended lubricant.
Where special conditions or processes are involved (e.g. high humidity, use of spin finish, experimental work, etc), extra care should be taken.