Danfoss VLT OneGearDrive, Operating Instructions Manual

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4.3 Repair
NOTE
Always return defective VLT
®
OneGearDrives to the local
Danfoss Sales Company.
4.4 Lubricants
4.4.1 Lubricant Changes
The gear units are supplied with lubricant ready for
operation.
Table 4.4 shows the oil change intervals based on normal
operating conditions and a lubricant temperature of
approximately 80
°
C. The lubrication interval must be
reduced at higher temperatures (halve it for each 10 K
increase in the lubricant temperature).
Lubricant type Lubricant change interval
PGLP220 25000 operating hours
Optileb GT220 H1 (food grade) 35000 operating hours
Table 4.4 Lubricant Change Intervals
The gear units have filling plugs and drain plugs. In the
standard designs, these make it possible to change the
lubricant without disassembly.
It is also necessary to flush the gear unit enclosure if the
lubricant grade or lubricant type is changed.
If the motor is only used briefly, it is sufficient to drain off
the original oil and use the original lubricant type to refill
the maximum possible amount for the gear unit as defined
on the nameplate. Then operate the drive unit briefly
under no load, drain this oil off again and refill with the
new lubricant as defined on the nameplate.
If necessary, drain off the original lubricant and flush out
the gear unit with petroleum until all traces have been
washed out. Then perform the procedure described for
short-term operation twice before filling with the specified
volume of new lubricant in accordance with the
nameplate.
Inspect, and if necessary replace, the wear parts (seals)
when changing the lubricant.
4.4.2 Lubricant Grade
Oils PGLP 220 and PGLP 68 comply with DIN 51502 and DIN 51517 and are suitable for lubricating the gear unit. Food
grade oils which comply with NSF H1 can be used.
The lubricant must permit low-friction, virtually wear-free continuous operation. The damage load level on the FZG test as
specified in DIN 51354 should be in excess of load level 12, and the specific wear below 0.27 mg/kWh. The lubricant should
not foam, should protect against corrosion, and should not attack the interior paint, the rolling contact bearings,
gearwheels, and seals.
Lubricants of different types may not be mixed, as this may impair the lubrication characteristics. A long service life is only
ensured by the use of a lubricant listed in
Table 4.5 or equivalent.
If the VLT
®
OneGearDrive is stored for a longer period of time before installation, refer to 6.2 Storage .
The following wear-protecting EP gear lubricant oils are recommended.
Lubricant Manufacturer Standard oil
Synthetic oil
PGLP 220 Low temperature
Synthetic oil
PGLP 68 Food Grade Oil
NSF
USDA H1 oil
ARAL Degol GS 220 – Eural Gear 220
BP Enersyn SP-XP 220 – –
CASTROL Alphasyn PG 220
OPTIFLEX A 220 – OPTILEB GT 220
FUCHS Renolin PG 220 Renolin PG 68 –
KLÜBER Klübersynth GH 6-220 Klübersynth GH 6-80 Klüberoil 4UH1-220N
MOBIL Glygoyle HE 220
Glygoyle 30 – –
Service and Maintenance
VLT
®
OneGearDrive Operating Instructions
18 MG75C302 - VLT
®
is a registered Danfoss trademark
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