ABB ACS800-67LC, Hardware Manual

Page: 49 / 154

Mechanical installation 49
Joining the liquid cooling unit to the converter cabinet
Converter delivery does not include the liquid cooling unit (LCU) that is to be connected to
the converter cabinet.

Connecting the liquid pipes
Note: It is recommended to use closing valves in the pipe connections of the cooling
circuit.
1. Ensure that there is sufficient space and free access to make proper cooling pipe
connections between the liquid cooling unit and the converter. It is not allowed to use
inflexible and fixed cooling pipe connections between two separate units (eg, LCU and
the converter connection). Always use a flexible connector that can reduce possible
stress caused by eg, vibration.
2. Check visually that the converter liquid pipes are not damaged (threads and flange
joint not damaged).
3. Connect the external cooling circuit pipes to the LCU. Secure the pipes mechanically.
See chapter Technical data for the pipe materials.
4. Position the liquid pipe ends against each other.
5. Centre the connector onto the pipe ends.
6. Tighten the
•
threaded connector carefully and ensure that it is slid on pipe ends,
•
flange connector bolts to a torque of 70 N·m (52 lbf·ft).
Customer support
L bracket
M16 bolt
Cabinet
roof
Customer support