Amann Girrbach 178740-STM, User Manual

Page: 52 / 68

52
A P P L I C A T I O N A N D O P E R A T I O N
E N
6 Application and Operation 6.1 Function test
The individual functions, such as cooling and gas
flow, can be manually set and checked via the con-
troller.
A function test must be carried out before using
the furnace for production:
▷
Check the furnace's protective gas function
(see 6.1.1).
▷
Check the furnace's compressed-air cooling
(see 6.1.2).
▷
Perform the sintering program with a small test
piece of Sintron (analogue to 6.2).
▷
Evaluate the sintering result with the Sintron
sintering chart.
▷
When the sintering result is insufficient, check
the cause and correct the fault (check all hose
connections for proper seating and tightness
against leaks, check the sintering-compartment
components for damage).
6.1.1 Checking the Furnace Function for the
Protective Gas
The furnace is factory-shipped with program 1
already pre-set.
After activating the sintering program with the
“
start
”
key, the ball-shaped float in the gas manom-
eter (right-hand side of furnace) ascends to a flow
value of ~ 0.2. In the cooling phase of the program,
the float ascends to a value of ~ 0.9.
Before starting-up the furnace, it should
acclimate at the set-up location for 24
hours. Swift heating up in cold condition
can cause damage to the heating elements
(for example, burning-through).
During the first heating up, there may be
odour nuisance due to binding agent
fumes escaping from the insulation mate-
rial.
▷
Provide for thorough ventilation of the
furnace set-up location when heating up
for the first time.
DANGER:
Hot air at the outlet opening!
▷
Do not reach with your hand at or above the
outlet opening.
▷
Do not place objects on the furnace!
WARNING:
Danger of fire and explosion!
The furnace surfaces become very warm.
▷
Do not place objects on the furnace!
NOTE:
Insufficient sintering results due to faulty tem-
perature control!
▷
Prior to every process, check the thermoele-
ment for damage.