AL-KO AT4F Series, Руководство по эксплуатации и сборке

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Translation of original operating instructions
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AL-KO AT4F ATEX
7.3.10 Electric air heater
WARNING
Risk of explosion
Due to electrostatic charging of the electric air heater, there is a risk of explosion.
„
Integrate the electric air heater back into the unit potential after each unfastening of the
equipotential bonding.
Frequent causes of error for accumulated heat with electric air heaters
Cause Remedy
No air volume flow Check that the dampers are open.
Check the function of the fan unit.
Check if a foreign object has been drawn in.
Insufficient air volume flow through controlled fans Adjust the air volume in speed-controlled fans to the heating capacity.
Check that the dampers are open.
Check if a foreign object has been drawn in.
Temperature monitor is not connected The temperature monitor is mandatory and must be checked.
Safety temperature limiter is not connected The safety temperature limiter is mandatory and must be checked.
No fan delay The fan delay is absolutely necessary. If this is not the case, the electrical
circuit must be checked.
Incorrect commissioning – Checking the electric
heater without sufficient air flow due to closed
flaps or false air, for example
Ensure that there is always a sufficient air volume flow at the heating coil
during testing
Air temperatures above 40 °C Ensure that the air temperatures do not exceed 40 °C at any time.
The air temperature in normal operation (continuous operation) must not
exceed 40 °C
„
After any power failure or fault messages, the installation is to be checked for damage and replacement measures
must be taken where necessary.
„
Observe the manufacturer's documentation.
„
Check that the electric air heater is integrated into the unit equipotential bonding.
7.4 Replacing components
7.4.1 Changing the filter
WARNING
Risk to health when changing the filters due to dust load and microbial contamination.
„
Switch off the unit on all poles and secure it against restart.
„
Adhere to the maintenance plan.
„
Wear the personal protective equipment (dust mask) during a filter change.
„
Use other protective equipment according to the work carried out.
WARNING
Risk of explosion
Due to electrostatic charging of the filter, there is a risk of explosion.
„
Only use ATEX filters that match the required ATEX marking of the unit!
„
Integrate the ATEX filters into the unit potential.