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18 Safety instructions
Work on the liquid cooling system
￭
These instructions are intended for all personnel that do installation, commissioning and
maintenance work on the liquid cooling system.
WARNING!
Obey these instructions. If you ignore them, injury or death, or damage to the
equipment can occur.
•
Use the required personal protective equipment. See the Safety data sheet for
®
Antifrogen
L coolant by Clariant (www.clariant.com) for the instructions on the
respiratory, hand and eye protection when handling the coolant.
•
Beware of hot, high-pressure coolant (6 bar, max. 50 °C) that is present in the internal
cooling circuit when it is in operation. Before you disconnect a pipe, release the pressure.
Close the appropriate stop valve(s). If necessary, stop the cooling circuit pumps.
•
Avoid skin contact with coolant. If coolant splashes onto the skin or in the eyes, rinse
immediately with plenty of water. Do not syphon it by mouth. If you swallow or get it
into the eyes, seek medical advice.
•
Before the drive power up, make sure that the internal cooling circuit is filled up with
coolant, and the cooling is in operation (coolant is circulating).
•
Make sure that coolant meets the ABB specification. See the appropriate hardware
manual of the drive/unit.
•
To avoid breaking the coolant pipes, do not overtighten the nuts of the unions. Leave
2 to 3 millimeters (0.08 to 0.12 inches) of thread visible.
2...3 mm (0.08 ... 0.12")
•
Do not drain coolant into the sewer system.
•
If you need to store the drive in temperature below -15 °C (5 °F), drain the cooling
circuit, or make sure that it is filled with the coolant specified by ABB.
•
Drives with the cooling unit: Do not open the cooling unit pump inlet or outlet valves
before filling up the coolant circuit. The pumps are filled with a mixture at the factory to
prevent corrosion and the valves are closed at the factory.
•
Drives with the cooling unit: Do not run the cooling unit pump dry.
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