HYDROCAL 1001+ Installation and operation manual Page 13/76
Tighten the union nut with a tin spanner M55 or an adjustable tin spanner 1 ½“, while you hold
the HYDROCAL unit in position using a tin spanner M55 or an adjustable tin spanner 1 ½“.
Make sure that the alignment of the HYDROCAL unit is still correct afterwards.
Attention !!!
The following steps must be done according to the company procedures.
Work carefully in order to prevent air entering into the transformer. Use a
bucket to catch the leaking oil.
Slowly open the transformer valve until oil runs out of the provided hole. Collect the leaking oil
with a bucket.
Close the aeration screw as soon as no air bubbles sort the provided hole.
Now open the transformer valve completely.
Remove thoroughly the oil residues with a dry cleaning rag or paper towel from the unit.
Attention !!!
Do not use solvents for cleaning!
Check after 30 minutes if the threaded connection is tight (no leakage).
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