BECKHOFF AL2000 Linear servomotor - Manual (Page 44)

Installation of the water cooling
9 Installation of the water cooling
Notice
Equipping with water cooling
Only the AL20xx and AL28xx­1000 series are equipped with water cooling.
9.1 General
This chapter considers the optional installation of a water cooling unit. The AL20xx series can be operated
as standard with or without water cooling. In the case of the AL28xx series the water cooling represents an
option that must be ordered explicitly so that it can be used.
Attention
Consequential damages due to leaking water cooling
Beckhoff can accept no responsibility for any damage resulting from a leaky water cooling
system
9.2 Requirements
AL20xx AL28xx­100x
Connecting nipple M5 Push­pull fitting, ­ Festo QS­1/8­8*
Seal M5 plastic seal & Loctite 638/648 Teflon tape
Required torque 0.2 – 0.3 Nm 4.0 Nm
Attention
Pressure drops due to incorrect connections
If other connectors are used, this can lead to more pressure loss than stated.
9.3 Installation of the water cooling connections
9.3.1 AL2xxx
Make sure that the minimum diameter for water flow is at least 2.5 mm, and that the internal diameter of the
hose is at least 4 mm.
1. Degrease the connector and the threaded holes. Allow the degreasing agent to evaporate completely
before continuing.
2. Place the plastic sealing ring on the connector.
3. Apply a drop of Loctite 638/648 adhesive to the thread, and spread it all the way round.
4. Attach the connector, and turn it until the sealing ring is visibly deformed. (This only requires a torque
of 0.2 to 0.3 Nm!)
5. Remove the excess adhesive.
6. Let the adhesive harden for 4 hours before stressing it.
7. Let the adhesive harden for about 12 hours before exposing it to pressure.
8. The hoses must match the chosen connectors.
Linear servomotor AL2xxx 44 Version 4.0