Thermo Fisher Scientific Alpha COND 1000 User Manual

Page 35

Operating Instructions

Thermo Scientific Alpha COND 1000

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.