Cooling Agents And Chip Disposal; Coolant Inspection - Bomar Ergonomic Series Operating Instructions Manual

1. Release the nut of the stop screw and screw down the stop screw
2. Lower the arm to the lower stop and turn on the band driver
3. Screw out the stop screw until the band driver stops
4. Secure the screw with nut again and check the limit switch setting once
more
4.5.

Cooling agents and chip disposal

The quality of the cooling
agent will deteriorate due to:
use of contaminated water

impurities

oil contamination from the

outside (hydraulics, gears)
high operating temperatures

lack of air circulation

wrong concentration

4.5.1.

Coolant inspection

The state of the cooling agent has a significant influence on the cutting quality and
on the lifespan of the machine. Lifetime of the cooling liquid is 1 year, after this time
we recommend change the cooling liquid. This time is dependent on the degree of
pollution of the cooling liquid (especially with oils) and on other factors.
Check level of the cooling liquid and function of the pump periodically!
Note:
If the state of the cooling liquid is not satisfactory, the
cooling liquid must be replaced.
Check the state of the cooling agent according to the following table:
Testing Interval
Liquid level daily
Concentration daily
Smell daily
Contamination daily
Corrosion- when
protection necessary
when
Stability
necessary
when
Foam reaction
necessary
* According to manufacturer's instructions
If the solution is too weak:
corrosion protection is

diminished
lubrication decreases

microbial attack is more likely

Method Condition
visually too low
too high
refractometer
densimeter
too low
by sense of smell unpleasant smell
visible oil leaks,
by sense of smell
sludge fungi
visually
insufficient corrosion
chip test
protection
Herbert-test
refractometer oiling
too much foam,
shaking test foam disperses too
slowly
If the solution is too strong:
the cooling ability is

decreased
foam production increases

emulsions stability

deteriorates
sticky residue develops

Precaution
check concentration, add
water or emulsion
refill water
refill base emulsion
good ventilation, add biocides
or replace coolant
surface cleaning, fix leaks, add
biocides or fungicides; clean
the system with a cleanser*
prior to the coolant
replacement
test stability, if necessary –
increase concentration or pH
value
add concentrate, enquire the
supplier
avoid aeration, increase water
hardness, fix with defomer
73