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Air Heater
WD-A, WD-U
Stopping Procedure, Dismantling and Elimination
09
09 Stopping Procedure, Dismantling
09.01 Stopping Procedure
Rest machine by regulation / control system to minimum capacity.
•
Switch louver flaps to recirculating air operation – close outside air flap in order to avoid cooling and frost
danger.
•
Close all regulating valves.
•
Switch off recirculating pumps.
•
Empty installation parts endangered by frost. Blow through heat exchanger and connecting pipes with
compressed air until they are completely empty, fan afterrunning until all surfaces are dry.
•
Switch off main switch and lock machine.
Re-starting
Check visually if there are any damages.
•
Fill emptied components slowly again – ventilate carefully.
•
Open all valves.
•
Actuate main switch.
•
Switch on regulation / control system.
09.02 Dismantling and Elimination
Dismantling
Before dismantling, the air heater and the consumers installed in it must be switched dead.
A qualified electrician must remove all alive connecting lines.
Moreover, all medium-bearing components must be completely emptied. This must be done by a specialized compa-
ny providing a qualified elimination of water with freezing preventive.
Then, the air heater can be dismantled on site into ist single units or parts. This should also be done by a specialized
company knowing the ecologically beneficial elimination of the single parts.
When handling dusty components (filters) or mineral wool products, wear suitable respirators .
Elimination
In our RLT-machines, the following materials are used:
Housing and built-in parts are made of
•
hot-dip galvanized sheet steel
•
aluminium AlMg
All materials can be returned to material cycle by separate waste disposal.
1. Switch off and block main switch.
2. Disconnect electric supply line and electric
connection in the clamp box.
3. Stop and dismantle advance and return of warm
water.
4. Remove the machine from the suspension. Loosen
screws
only about 3 mm and remove the machine.
5. Remove blow-out louver as well as back wall with
fan by loosening the sheet screws
.
6. Remove the lateral fitting screws M 8
.
7. Loosen the sheet screws
which are located
diagonally at the lateral corners and remove the
external cladding halves in lateral direction. Remove
heat exchanger.
8. If necessary, remove motor with protection grid from
the back wall by loosening the screw
.
Fan, Motor, Protective Grid
(one unit)
Housing
Position 3
Position 2
Position 1
Blow-out Louver
Heat Exchanger
Back Wall
