Ratings and performance data are based on operating with hydraulic fluids containing oxidation, rust
and foam inhibitors. These fluids must possess good thermal and hydrolytic stability to prevent wear,
erosion and corrosion of pump components.
W
Warning
It is compulsory to use oils whose inflammable degree is at least 50K above the maximum surface
temperature of the pump. Maximum surface temperature for Group IIG and IID can be found under
Viscosity and temperature for D1P pump
Viscosity and temperature for D1P pump
Features
Data
Viscosity
Intermittent
1)
5 mm
2
/sec [42 SUS]
Minimum
7 mm
2
/sec [49 SUS]
Recommended range
12 - 80 mm
2
[66 - 371 SUS]
Maximum (cold start)
2)
1600 mm
2
/sec [7416 SUS]
Temperature
Minimum (cold start)
2)
-40°C [-40°F]
Maximum intermittent
1)
115°C [239°F]
1)
Intermittent = Short term t < 3 min per incident.
2)
Cold start = Short term t < 3 min; p ≥ 50 bar; n ≤ 1000 min
-1
(rpm); please contact Danfoss Power Solutions
especially when the temperature is below -25 °C [-13 °F].
Above maximum surface temperatures are without any deposited dust on the product. The possible
insulation effect of a dust layer on the surface has to be taken into account by the safety margin to the
minimum ignition temperature of the dust concerned. For up to 5 mm [1.97 in] layer thickness the safety
margin is 75°C [167°F]. For further information please see IEC 60079-14.
W
Warning
The above operating temperatures (ambient and oil) of the pump must be guaranteed by the end user.
W
Warning
It is compulsory to use oils whose inflammable degree is at least 50K above the maximum surface
temperature of the pump. See also .
Ambient temperature
Maximum ambient temperature depends on the requested ATEX class needed.
In general the ambient temperature should lie between -40° C [-40° F] and +70° C [158 °F] to ensure that
the shaft seal retains its sealing capacity.
Oil temperature
Maximum oil temperature depends on the requested ATEX class needed (in this case T3)..
Under normal operating conditions it is recommended to keep the temperature in the range of 60 °C
[140 °F] to 85 °C [185 °F].
Viscosity
Maintain fluid viscosity within the recommended range for maximum efficiency and bearing life.
Minimum viscosity should only occur during brief occasions of maximum ambient temperature and
severe duty cycle operation. Maximum viscosity should only occur at cold start. Limit speeds until the
system warms up.
User Manual
ATEX certified D1P 130/145/193/260
Technical information
8 |
©
Danfoss | August 2021
BC376161003883en-000101
