Fuchs Hydrotherm 68 LW RED Fire Resistant Hydraulic & Lubricating Oil

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Description:
Fuchs Hydrotherm 68 LW RED Fire Resistant Hydraulic & Lubricating Oil

Lead Time Warning:

Please note that some industrial and commercial products are made to order and therefore have an extended lead time.
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Fire-resistant hydraulic fluid type HFC-E

HYDROTHERM 68 LW RED is a specially formulated, new generation water glycol based fire resistant hydraulic fluid that combines safety in operation with
exceptional anti-wear / extreme pressure (EP/AW) performance surpassing results previously possible from conventional water glycol fluids. It complies with the ISO Fluid HFC – E Classification.

Application:
HYDROTHERM 68 LW RED may be used in a wide variety of equipment utilising various hydraulic pumps including vane, gear and axial piston types operating over a wide temperature and pressure range.
This fluid may be used in hydraulic systems where the use of conventional mineral hydraulic oil would pose a serious fire risk, such as Die Casting, Foundries, Steel Works and Mining.

Method of Use:
To change over from mineral oil, drain and clean the system thoroughly. Drain and clean out the reservoir and drain and blow out all pipelines. Clean valves and remove pumps, accumulators and cylinders for draining where practicable.

Approximately half fill the system with HYDROTHERM 68 LW RED and run for 24 hours under no load conditions, operating all functions of the hydraulic system. Drain thoroughly and discard this flushing charge. Charge the system to half full and operate the system. Sample the fluid to ensure the flushing procedure has been successful and then fill to the correct operating capacity.

Start-up:
When starting up a new hydraulic system or after switching from mineral oil to HYDROTHERM 68 LW RED, the hydraulic system should be “run-in” for at least one hour at reduced pressure (20 to 40 bar).

Fluid Maintenance:
Some slight water loss from the fluid can be expected over prolonged use dependent upon operating temperature and system breathing. A reduction of the water content will increase the viscosity of the fluid. The water content of HYDROTHERM 68 LW RED should be between min. 15% and max. 25%. Thus, regular samples of the fluid should be taken to check that the water content is maintained above 15% to ensure that satisfactory fire resistance is maintained. FUCHS offer a full condition monitoring service both on and off site.

Benefits:

Outstanding EP/AW performance providing excellent life to system components, FZG Load Stage 12 pass
Fire Resistant: - Buxton Test RI >70, pass - Complies with the British Coal 570/ 1981
Spray Ignition Test and the Wick Test, Will not support combustion
Surpasses the requirements of DSK (Deutsche Steinkohle AG)
Approved according to the 7th Luxembourg Report (no. 83.12.22.62-2004-3, Bezirksregierung Arnsberg, Abt. 8 = responsible authority in Germany)
Excellent corrosion protection to both ferrous and most non-ferrous components
Good elastomer compatibility with seals and packings normally found to be compatible with water glycols
Not recommended for rubber impregnated cork or leather seals

Technical Information:

HYDROTHERM		68 LW RED
Characteristics	Unit		Test Method
ISO VG	-	68	DIN 51 519
Colour		Red
Viscosity at 40ºC at 100ºC	mm2/s mm2/s	70 11.9	DIN EN ISO 3104
Viscosity index	-	166	DIN ISO 2909
Density at 15ºC	kg/m3	1106	DIN 51 757
Pour point	ºC	-45	DIN ISO 3016
pH value	-	9.4	DIN 51 369
FZG Special test: A/8, 3/60	Failure load stage	> 12	DIN ISO 14635-1
Water content	%wt	20	DIN ISO 3733
Minimum recommended water content in service	%wt	15	DIN ISO 3733
Recommended maximum bulk fluid operating temperature	ºC	70
Fire resistance tests Buxton test Spray ignition test Wick test

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