Optimum OPTidrill DH 40CT Betriebsanleitung Seite 82

Regularly clean the coolant tank.
CAUTION!
The cooling lubricant needs to be checked at least weekly, including during downtimes,
with regard to its concentration, ph-value, bacteria and fungal decay.

Cooling lubricants and tanks on page 42

Inspection plan for water-mixed cooling lubricants on page 43
Please note the VKIS - VSI - IGM substance list for coolant lubricants as per DIN 51385
for metal working.
EN DH 40CT
82 Translation of original instruction
Operation
Version 1.0.1 - 2021-07-06