
CHAPTER 5: MAINTENANCE
UNIFLOW
®
4 PULSED HEAT CONTROL
990-908
5-7
Alarm
Resetting Alarm
Aborting the Process Step of
Cooling to Base or Preheat
Temperature
All Alarms except for Max
Temp Alarm and Emergency
Stop (EMO)
The first Digital Input Reset (J4A-7) or
Up Arrow key press will clear alarm relay
and stop graph lines from plotting. Unit
will go to Cooling, Cooling to Base or
Preheat Temperature, or System Ready
depending on Main thermocouple
temperature. If the unit is in the Cooling
stage, the Cooling stage will end at
COOL1 temperature if there is no
POSTHEAT time, or the Cooling stage
will end at COOL2 temperature if there is
a POSTHEAT time.
Note: Cycling Power Also clears alarm.
Once Alarm is reset, Up Arrow key can
be used to abort process step of Cooling
to Base or Preheat Temperature. When
Up Arrow is pressed, unit will go to
System Ready condition and allow next
reflow.
MAX TEMP ALARM
The first Digital Input Reset (J4A-7) will
clear alarm relay and stop graph lines
from plotting. Unit will go to Cooling,
Cooling to Base or Preheat Temperature,
or System Ready depending on Main
thermocouple
temperature. Note: Cycling Power Also
clears alarm relay.
Once Alarm is reset, Up Arrow key can
be used to abort process step of Cooling
to Base or Preheat Temperature. When
Up Arrow is pressed, unit will go to
System Ready condition and allow next
reflow.
EMERGENCY STOP
ACTIVATED
Reconnecting Emergency Stop Circuit
will clear alarm relay. EMERGENCY
STOP message will continue to be
displayed on LCD until Main
thermocouple drops to Base or Preheat
Temperature
Cannot abort Process Step of Cooling to
Base or Preheat Temperature
Содержание UNIFLOW 4 REMOTE
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Страница 137: ...UNIFLOW 4 PULSED HEAT CONTROL 990 908 C 1 APPENDIX C SYSTEM TIMING No Post Heat Pulse TCOOL1 Cool1 Temperature Setpoint ...
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