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• No unauthorized changes on the unit are allowed. All intended changes must be authorized by the
manufacturer.
3.3.3 Environmental Issues
Environmentally concious and anticipatory behaviour of staff avoids environmentally hazardous impacts.
The following principles apply for environmentally conscious behaviour:
• Environmentally hazardous substances must not get into the ground or the drains. They should be
kept in appropriate containers.
• Environmentally hazardous substances must be fed to utilization or disposal according to regional
regulations.
When dealing with operating supplies always keep aware of the safety data sheet of the corresponding
manufacturer.
3.4 Safety Equipment
PLEASE NOTE
The safety equipment listed below must be integrated in the local control environment by the customer,
unless otherwise noted. These works must be carried out only by trained experts. All required information
can be taken from the wiring diagram shown in the addendum.
Safety equipment must not be modified, removed or taken out of operation. All parts of the safety equipment
must be accessible at all times.
3.4.1 Safety and Signalling Equipment included in the Unit
The unit is equipped with safety equipment at critical spots (see Fig. 2)
• The Liquid throughput is controlled by a flow control device that must be integrated in the potential-
free safety circuit of the device to be cooled.
• The maximum temperature of the cooling circuit is controlled by a thermostat with an opener contact
that must be integrated into the safety circuit of the device to be cooled.
• The maximum pump pressure is limited by a safety valve that by-passes the liquid stream when the
pressure pre-set is exceeded.
• The minimum coolant level in the tank is secured by a level sensor.
1
4
Fig. 3:
Safety equipment
Laird Thermal Systems s.r.o
11
Operation Manual, 387009851
3
1 Safety valve
3 Flow control device
2
Date: 08/09/2022
Version: 1.0
Safety Regulations
Safety Equipment
2 Thermostat
4 Level sensor
Liquid-Air Cooling Unit LA 5000
387009381
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