OMTS motors (short motor) - Maximum surface temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] 75 [167] 85 [185] 95 [203]
≤ 60 °C [140 °F] 90 [194] 100 [212] 110 [230]
≤ 80 °C [176 °F] 105 [221] 115 [239] 125 [257]
OMV/OMVW motors - Maximum surface temperatures
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] 120 [248] 140 [284] 160 [320]
≤ 60 °C [140 °F] 135 [275] 155 [311] 175 [347]
≤ 80 °C [176 °F] 150 [302] 170 [338] 190 [374]
OMVS motors (short motor) - Maximum surface temperature
Maximum oil
temperature
Maximum ambient temperature
≤ 20 °C [68 °F] ≤ 40 °C [104 °F] ≤ 60 °C [140 °F]
≤ 40 °C [104 °F] 75 [167] 85 [185] 95 [203]
≤ 60 °C [140 °F] 90 [194] 100 [212] 110 [230]
≤ 80 °C [176 °F] 105 [221] 115 [239] 125 [257]
Above maximum surface temperatures are without any deposited dust on the motors. 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.
Warning
It is compulsory to use oils whose inflammable degree is at least 50K above the maximum surface
temperature of the motor. See also Oil types / Operating fluids on page 9
User Manual
ATEX instruction for OMS, OMT and OMV
Introduction OMS, OMT and OMV
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Danfoss | September 2016 11160602 | AQ00000213en-US0103