Laird WL3004, Спецификация и руководство пользователя

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11
Environmental Issues
Environmentally conscious and anticipatory behavior of staff avoids environmentally hazardous
impacts.
The following principles apply for environmentally conscious behavior:

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.
Safety Equipment
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.
Safety and Signaling Equipment included in the Unit
The unit is equipped with safety equipment at critical spots (see Fig. 2)

The water 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 non-variable 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.
Fig. 3: Safety equipment
1 Safety valve 2 Thermostat
3 Flow control device