Routine Maintenance; Preventive Maintenance - Thermo Scientific HyPerforma DS 300 User Manual

Chapter 3 | Maintenance and troubleshooting
Figure 3.1. Drive shaft hex
diameter measurement
location
Hex diameter
measurement
location
Thermo Scientific

3.1 Routine maintenance

Environmental conditions, operating parameters, and the ability of the
user to adhere to standard operating procedures as outlined in this
user's guide can have significant impact upon the useful life of the
DS 300 S.U.M. The following maintenance guidelines are based on
standard operating conditions.
The mixing system is inherently robust, and requires low levels of
routine maintenance. Taking time between mixing batches to clean
the exterior of the DS 300 S.U.M. will improve the appearance and
overall longevity of the system. The drive motor is an industrial grade
induction motor with a permanently sealed and lubricated gear box.
The drive shaft is constructed to wear slightly with use and should
be visually inspected after each run. Visual inspection of wear and
components, and following maintenance guidelines will ensure years
of dependable service.

3.2 Preventive maintenance

Replace the worn drive shaft assembly when the drive hex diameter
at its widest location measures equal to or less than 1.44 cm (0.56
in.). Measure the diameter at the widest location across the points, as
shown in Figure 3.1.
If the drive shaft becomes difficult to turn, lightly coat the drive cap
threads with food-grade anti-seize.
It is a good idea to have spare parts on hand. See section 4.5 for
more information.
HyPerforma DS 300 Single‑Use Mixer User's Guide | 37