Thermo Fisher Scientific Alpha COND 1000 - Manual (Page 35)

Operating Instructions Thermo Scientific Alpha COND 1000
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8 AUTO/MANUAL MODE
Regardless of the mode, you can control devices connected to Relay A or Relay B
from the front panel of this controller. In Automatic mode, the controller’s set point
values activate the relays. In Manual mode, you have manual control of the relays
so you can prime the pump or check pump status without operating the entire
system.
8.1 Auto mode (mode after switch-on)
In this mode, the controller set-point values activate the relays. To view the set-
point values:
1) Press the RELAY SELECTION (Rel A/Rel B) key. The upper display shows
your set-point value for Relay A; the lower display shows “SP1”.
2) After two seconds the upper display shows your set-point value for Relay B; the
lower display shows “SP2”.
3) After an additional two seconds the controller will return to Measurement mode.
8.2 Manual mode
In this mode, you can manually turn on and off the control devices connected to
Relay A or Relay B or both.
1) Press the RELAY CONTROL (auto/manu) key. The upper display shows
“000”; the lower display shows “S.Cd” to prompt you to enter the Advanced Set-
up code.
2) Press the ▲ or ▼ keys to scroll the upper display until it reads “22”.
3) Press the ENTER key. The manual indicator by the RELAY CONTROL key
lights up.
Note: Pressing ENTER key at a value other than “22” will cause the controller to
revert to Measurement mode, and the relays will remain in automatic mode.
4) Press the RELAY SELECTION key to select either Relay A or Relay B. The
LED next to the currently selected relay (A or B) will light.
The manual control options are now available.
- If you selected Limit control: The upper display reads the current
measured value. The lower display shows “oFF” or “on” depending on
the relay status of the currently selected relay.
5) Press the ▲ or ▼ keys to change the Relay on/off status. The LED indicators
at the right of the controller will also change between Red and Green to indicate
Relay status.
Note: If you wish to manually change the status of both relays, press the RELAY
SELECTION key at this point and repeat step 5 for the second relay. This first relay
will remain under manual control while you are setting the second relay.
6) Press the RELAY CONTROL key to return to Measurement mode. The relays
are now back under automatic control.