nord 6052902/0213, Руководство с инструкциями по установке

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Industrial gear units – Manual with installation instructions
116 B 1050 en-3921
7.3.3 Minimum starting temperatures
Depending on the type of lubrication, the lubricant class, as well as the ambient temperature and
additional heating and cooling methods, minimum requirements for the specific oil must be taken into
consideration for selection and commissioning.
During start-up, the viscosity of the gear oil must not be higher than 1800 cSt. The following tables
show the minimum permissible ambient temperatures (starting temperatures) for the various oil
viscosity classes, so that 1800 cSt is not undershot. If the temperatures are lower, the oil must be
heated before starting.
Different conditions apply for external cooling systems (Option CS1-X, CS2-X) (see chapter 4.8
"External cooling system (Option: CS1-X, CS2-X)").
Lubrication type
Viscosity class (mineral oils)
ISO VG 460 ISO VG 320 ISO VG 220 ISO VG 150
Bath lubrication/immersion
lubrication
-10 °C -12 °C -15 °C -20 °C
Lubricant circulation/ Pressure
lubrication with motor pump
On request +15 °C +10 °C +5 °C
Lubricant circulation/ Pressure
lubrication with flange pump
On request +5 °C 0 °C -5 °C
External cooling system On request +25 °C +20 °C On request
Table 19: Minimum starting temperatures for mineral oils (guideline values for the ambient temperature)
Lubrication type
Viscosity class (synthetic oils)
ISO VG 460 ISO VG 320 ISO VG 220 ISO VG 150
Bath lubrication/immersion
lubrication
-25 °C -25 °C -25 °C -25 °C
Lubricant circulation/ Pressure
lubrication with motor pump
On request +5 °C 0 °C -5 °C
Lubricant circulation/ Pressure
lubrication with flange pump
On request -5 °C -10 °C -15 °C
External cooling system On request +15 °C +10 °C On request
Table 20: Minimum starting temperatures for synthetic oils (guideline values for the ambient temperature)
Maximum permitted oil temperatures:
• For mineral oil, the maximum permissible oil temperature is 85 °C.
• For synthetic oil, the maximum permissible oil temperature is 105 °C.