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8.6.1
Avoidance of frost and corrosion damage in the cooling system
● For avoidance of frost and corrosion damage, completely drain the water from the cooling
8.6.2
Avoidance of condensation or formation of condensation within the machine
● If the controller does not do this automatically, switch on any anti-condensation heating
● Do not switch on the anti-condensation heating for at least two hours after the motor has
Explosion hazard
If the anti-condensation heating is switched on directly after the machine is switched off, the
temperature class or the maximum surface temperature of the machine can be exceeded.
In an explosive atmosphere, there is a risk of an explosion. This can result in death, serious
injury or material damage.
● Only switch on the anti-condensation heating after the motor has been switched off.
SIMOTICS FD 1MH1
Operating Instructions 08/2017
system. Then blow air through the cooling system to dry it.
If the cooling system cannot be drained because standby capability is required at short
notice, protect the cooling circuit against frost and corrosion damage. To do this, add
suitable additives to the cooling water.
NOTICE
Impairment of the heat transport
Additives such as anti-freeze and corrosive inhibitor can impair the heat transport.
Operate the motor only with the contractually agreed water quality.
For avoidance of deposits, the cooling water circuit must then be kept running. So as to be
certain of excluding the possibility of formation of condensation within the machine, the anti-
condensation heating should also remain switched on (if fitted).
during stoppages. This will avoid the formation of condensation.
been switched off. This prevents damage to the winding insulation.
WARNING
Carefully comply with the data on the anti-condensation heating plate.
Operation
8.6 Stoppages
125
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