General Information
Safety Devices
Fr
öling
Boiler and Container Making GmbH, Industriestra
ße 12, A
-4710 Grieskirchen
page 9
Tel. +43 (0) 7248 606-0 Fax +43 (0) 7248 606-600 [email protected]
www.froeling.com
Edition: 02.06.2005
2
Pos.
Component
Description
1
Main switch
Before maintenance: Switch off the entire system
All components are switched off and powered
down
2
STOP key
In the event of over-heating, shuts down boiler
The pumps continue to run.
IMPORTANT: To stop heating operations,
always use the STOP key only.
Do not use the main switch
.
3
Door contact switch, tunnel door
4
Door contact switch, combustion
chamber door
If you open the door while the boiler is operating, switch
the induced draught fan to full speed.
5
Safety overload switches, motor
overload switch
Switch off the related component in the event of fault
currents or overloads.
6
Power supply fuses
7
Motherboard fuses
Properly fuse the control system and any electronic
components
When changing fuses, fit fuses with the rated
current specified.
Devices for preventing the boiler from over-heating:
A
Boiler controller
Switches the boiler off if the boiler temperature is set 5
°C
(standard) above the setpoint value.
B
Safety temperature limiter (STB)
Switches off the blower fan at the maximum boiler
temperature of 100
°C. The pumps continue to run.
Once the temperature falls to below 95
°C, the STB can
be reset mechanically
Unscrew the cap on the safety temperature limiter
Using a screwdriver, press the reset button
C
Safety battery valve
Opens at a temperature of 105
°C and feeds cold water to
the safety heat exchanger (safety battery).
D
Safety valve (not illustrated,
provided by the customer)
When the boiler pressure is too high, the safety valve
opens and vents off the hot water as steam.
Before you start up the system again, top up the
system to replace any water which has been lost
through venting.
