HYDROCAL 1001+ Installation and operation manual Page 12/76
Now align the unit clockwise until the position of the aeration screw is at 12 o`clock. Make
sure that the unit is tight in this position.
Note: The alignment of the unit must be only clockwise. Once the unit is turned counterclockwise
during the alignment, the installation procedure must be performed once again! Risk of oil leak-
age!
Attention !!!
Do not exceed 12 o`clock position!
Otherwise you have to remove the HYDROCAL unit, completely remove
the Teflon tape from the connection thread and perform the installation
procedure again!
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).
2.4.1.2. Indirect installation
Indirect installation means the HYDROCAL unit is fixed on the fitting by turning the union nut. A gas-
ket is used to seal the connection.
Attention!!!
Always open the aeration screw first!!!
Attention!!!
Only remove the protection cap (slowly while turning) when to aeration
screw is open and you are ready to mount the HYDROCAL unit!
Clean the inside of the union nut with a dry cleaning rag or paper towel.
Clean the outer thread of the connection unit with a dry cleaning rag or paper towel. Remove
any remaining of thread sealing tape completely from the threads. For persistent remaining
you can use the brass brush or use white spirit (pure alcohol). White spirit must dry out com-
pletely before proceeding.
Place the HYDROCAL unit horizontally to the fitting. Make sure that the unit is leveled and the
gasket inserted.
Attention !!!
Make sure that the gasket is inserted
between HYDROCAL unit and fitting.
Turn in the union nut by hand to the external thread of the connection unit.
Now align the unit until the position of the aeration screw is at 12 o`clock.
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