Carbolite Gero GPCMA 174, Инструкция по установке и эксплуатации

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In each program segment within the temperature controller/ programmer, there are
four "Events" that may be activated:
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Event 1 starts the vacuum pump
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Event 2 turns on the purge (high) gas flow rate (flow rate 1)
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Event 3 controls the process (low) gas flow rate (flow rate 2)
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Event 4 starts the forced cooling system (if fitted)
Note: Event 1 cannot be active when either Event 2 and/ or Event 3 are active.
The vacuum level is user adjustable, but is preset to -0.95 relative (-950mbar below
atmospheric) - see step 3 in the following programming example.
This example is based on a model with optional vacuum and forced cooling systems,
and may be edited and adapted as required:
1 STEP to 0°C, Event 1 ON
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Furnace cold
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Start the vacuum pump
2
DWELL for 10 minutes,
Event 1 ON
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Pump down for a minimum of 10 minutes
3 WAIT for Digital High
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Wait until retort pressure is below -950mbar
4
DWELL for 10 minutes,
Event 2 ON
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Vacuum pump off
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High gas flow rate for 10 minutes
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The exhaust opens when the retort pressure
r10mbar
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Steps 1-4 may be repeated for multiple vacuum/
gas backfill cycles
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RAMP to 1050°C @
5°C/min, Event 3 ON
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Heat to 1050°C
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Low gas flow rate
6
DWELL for 60 minutes,
Event 3 ON
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Dwell at 1050°C
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Low gas flow rate
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RAMP to 90°C @
5°C/min, Event 3 and
Event 4 ON
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Forced cool down to 90°C
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Low gas flow rate
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STEP to 0°C, Event 3 ON
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Shut the furnace down
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Low gas flow rate
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Turn off the forced cooling system
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DWELL for 10 minutes,
Event 2 ON
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Purge with a low gas flow rate for 10 minutes
10 END, all Events OFF
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Shut down all gas flows
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Natural cooling
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Open the chimney
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