BA 9142 en 02/2015
6.6
Pickling of adapted pipes
CAUTION
Risk of injury from chemical substances
Chemical burns on face and hands from pickling solution.
Wear protective glasses and gloves, ensure sufficient ventilation.
Observe the manufacturer’s instructions for the handling of pickling solutions.
•
The lower end of each pipe must be sealed with a plug.
•
Pickling solution: 33 % hydrochloric acid (HCl) diluted with the same quantity of water (H
2
O).
Note
Air bubbles must not under any circumstances be allowed to form on the inside of the pipes.
•
The pipes must be filled with the pickling solution (acting time: 1 hour).
•
Drain pickling solution completely out of the pipes without residues and dispose of it according to
regulations.
•
Flush out pipes thoroughly with water (H
2
O).
•
After emptying the pipes, they must be filled with a neutralising solution (sodium lye 3 % to 5 % NaOH)
(neutralisation period 15 minutes). Flush out pipes once again with water (H
2
O).
•
Flush out pipes thoroughly with flushing oil through a 25 μm (0.001 inch) filter.
NOTICE
Property damage
Damage from corrosion.
If the adapted pipes are not installed straight away, they must be carefully preserved.
If the preserved pipework is reinstalled, item 6.5 has to be observed.
6.7
Installing the couplings
A flexible coupling is used for the gear unit output.
Before beginning the assembly, thoroughly clean shaft ends and the coupling parts.
Fit couplings on the shaft ends using the thread centring hole. Secure the couplings against being shifted
axially.
Note
Couplings must be balanced in accordance with the specifications in the pertinent instructions manual.
When operating and servicing the couplings, observe the operating instructions relating to the
couplings.
Increased system service life and reliability and reduced running noise can be achieved through the
least possible radial and angular misalignment.
NOTICE
Property damage
Damage in the gear unit from blows or impact is possible.
Fit the coupling with the aid of suitable fitting equipment.
The running surfaces of the shaft must not be damaged when pulling on in the coupling parts.
