Jung J630D, Руководство пользователя

Страница: 282 / 316

J630D
276 26.7.02 9. Maintenance / servicing / disposal
9.1.3 Regular maintenance of the coolant system
Appropriate countermeasures must be taken by the owner if the limit
values specified below are exceeded. These measures must be
approved by the coolant manufacturer, the BIA (Institute for Work
Safety of the Employer's Liability Insurance Association) and the
Gewerbeaufsichtsamt (Factory and Shop Inspectorate).
Interval Measurement Limit value Result
daily
Concentration
See manufactu-
rer´s specificati-
ons Concentration too low = risk of corrosion
Concentration too high = machine becomes mis-
ted and sticky
weekly
pH value 8,5 - 9,4
Value too low = risk of corrosion and microbial
contamination
Value too high = skin irritation
Nitrate content Less than 50 mg/l Increased risk of cancer
Nitrite content Less than 20 mg/l Increased risk of cancer
monthly
Bacteria count,
yeast / fungus
Less than 10
4
- Odour
- Reduced protection against corrosion
- Skin irritation
- Inflammation
- Reduction in filtration and chip removal effec-
tiveness
Bacteria count,
yeast / fungus
Less than 10
6
See above
Interval Measurement Limit value Result
See manufac-
turer’s speci-
fications
Nitrosamine
1 Mikrogramm/m
3
Official recommended concentration. Must not
be exceeded under any circumstances.
Aerosol concen-
tration
5 mg/m
3
Hazard from toxic substances.
Sum of aerosol
and vapour con-
centration
20 mg/m
3
Hazard from toxic substances.