B Operating Instructions for Rotary Joints Series DX/DXS
8
.
Maintenance
27/27
© 2011 by Christian Maier GmbH & Co. KG Maschinenfabrik
This document may not be copied or disclosed to third parties.
All rights, including copyright and property rights, reserved by Maier.
AB-DX_en – Version 08 – 01.03.2011
B
Evaluating the sealing surfaces
The rotating mechanical seal must be replaced! The wearing height at the carbon
sealing ring should be at least 2 mm. Axial movements of the spring-loaded carbon
sealing ring must be possible.
Pay particular attention to the quality of the sealing surfaces. When new, the sealing
surfaces are lapped. Before re-using the sealing parts, you must lap them again!
8.2.2.4
Mounting the rotary joint
NOTE
Never lubricate or grease the sealing surfaces of the rotating mechanical seal!
Apply a very thin layer of a suitable lubricant to the Eastover sealing rings (O rings) and
shaft sealing rings. They must never come into contact with mineral oil-based lubricants
(seal failure a result of expansion or decomposition! Use "Parker Super-O-Lube" as a
mounting aid.
Never apply excessive force during mounting!
Prerequisite
Only use new spare parts and wearing parts.
Mounting
B-32
1.
The spare parts are mounted in the same way as
they are dismounted, but in reverse order.
2.
Special note on mounting the rotating mechanical
seal:
Never press on the sealing surface [DF] of the car-
bon ring for mounting. It is recommended to use a
mounting bushing [H] to insert the rotating mechani-
cal seal at the housing shoulder [S] of the rotating
mechanical seal.
3.
Prior to the next mounting steps, clean the sealing
surfaces [DF] at the inserted rotating mechanical
seal and at the rotor / counter ring with a solvent that
does not leave residue. Do not grease or oil the
sealing surfaces.
4.
Refer to the section "Specifications and Spare Parts"
for the recommended lubricant and volume for initial
greasing of the roller bearings.
H
DF
S
