Symptom
Possible cause
Troubleshooting
the factory. If the grease gets hot, it can get
out of the hollow shaft seal and look like oil.
Small initial leakage during the first time of op-
eration. This can happen until the sealing sys-
tem reaches its full function and is normal.
Clean and check again after 1–2 weeks. Repeat
the procedure if necessary. An initial leakage
will typically disappear without further actions.
Oil level too high
Check and correct the oil level using the oil
check kit provided by Danfoss.
Actual hollow shaft seal leakage. It has been
confirmed that none of the other root causes
apply. An actual leakage is permanent with a
significant loss of oil.
Change the hollow shaft seal.
AQ347551551757en-000101 / 130R0239 | 23
Danfoss A/S © 2020.12
Diagnostics
VLT® OneGearDrive®
Operating Guide
Summary of Contents for VLT OneGearDrive
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