Fayat Group Bomag MPH 122-2, Operating & Maintenance Instructions, Page: 99 / 198

Maintenance
BOMAG 99 MPH 122-2
Information concerning the water quality can be
obtained from the waterworks.
If the fresh water analysis values are unknown,
these must be determined with the help of a water
analysis.
If the values of the analysis deviate, the water
must be treated accordingly.
l
pH-value too low
Adding of caustic lye of soda or caustic potash
solution.
l
Water hardness too high:
Mix with soft, distilled or fully demineralized
water
l
Chlorides and/or sulphates too high:
Mix with soft, distilled or fully demineralized
water
l
Total hardness or carbonate hardness too low:
Mixing with hardened water (harder water is in
most cases available in the form of drinking
water).
!
Caution
Another analysis must be made after the fresh
water has been prepared.
Cooling system protection agent
As a protection against frost, corrosion and boiling
point anti-freeze agents must be used under any
climatic conditions.
Coolant for fluid cooled engines is prepared by
adding an ethylene-glycol based anti-freeze agent
with corrosion inhibiting properties to the cooling
water.
We therefore highly recommend our BOMAG cool-
ing system protection agent.
If our cooling system protection agent is not avail-
able for any important reasons, you may, in excep-
tional cases, use products that have been
approved by the engine manufacturer.
The list of approved cooling system protection
agents is also available in the Internet under the
following address:
Products of the same product group (see Deutz
Technical Circular Cooling System Protection
Agents) can be mixed with each other.
The BOMAG cooling system protection agent cor-
responds with product group A.
!
Caution
Do not mix different coolants and additives of
any other kind.
Before changing the product you must clean
the entire cooling system.
Consult your local service station if in doubt.
To ensure proper corrosion protection you must
use the cooling system protection agent all year
around, whereby the following concentration must
not be fallen short of or exceeded.
Fresh water analysis values
pH-value at 20 °C 6.5 - 8.5
Chloride ion content (mg/l) (ppm) max. 100
Sulphate ion content (mg/l)
(ppm) max. 100
Water hardness (ion content of
calcium and magnesium )
(mmol/l)] max. 3.56
Conversion to other units:
- German degree (°dH)] max. 20
- English degree (°eH)] max. 25
- French degree (°fH)] max. 36.5
corresponds with a content of
CaCO
3
(mg/l) (ppm)
max. 356
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