On-Board FastRegen Control Module Programming and Operation Instructions
P/N 8040406
3-25
C
HELIX TECHNOLOGY CORPORATION
-
TI
CRYOGENICS
Power Failure Recovery
1. Press the REGEN key on the keypad/display. The current
REGEN status is displayed.
2. Press the Next key until the current mode for power failure recov-
ery is displayed.
3. Press the desired numeral key to set power failure recovery to the
desired mode. The range of values is 0 (OFF), 1 (ON), or 2 (Cool).
4. Press the MONITOR key. The On-Board microprocessor will
monitor system operation.
NOTE: The Power Failure option only allows for a Full regeneration. If a
Fast REGEN module has a power fail ON and power is lost, a Full
regeneration will be performed.
Power Failure Recovery Temperature
1. Press the REGEN key on the keypad/display. The current
REGEN status is displayed.
2. Press the Next key until the current power failure recovery temper-
ature is displayed.
3. Press the Enter key. The current value is underlined and ready to
accept a new value.
4. Press the numeral keys for the desired recovery temperature. For
example: 2, and 5 for 25K. The range of values is 10 - 80K.
NOTE: The Clear key may be pressed if incorrect data has been entered.
The On-Board software allows you to enter the new value.
5. Press the Enter key. Power failure recovery temperature program-
ming is complete.
6. Press the MONITOR key. The On-Board microprocessor will
monitor system operation.
NOTE: In the event of a power failure, if the cryopump is ON and Power
Failure Recovery is ON, and the cryopump warms up to a temperature
higher than the temperature setpoint, the cryopump will be automatically
regenerated. The display will read POWER FAILURE - REGENERATION.
NOTE: If a Delay Start or Delay Restart has been programmed, these
times will be ignored for regeneration initiated due to a power failure.