MKS 651C, Instruction Manual, Page: 54 / 172

Overview Chapter Four: System Setup
40
Valve Selection and Calibration
Prior to its use, the appropriate valve must be connected and identified by the 651 controller.
The 651 controller is initially configured to work with a 653 valve. Follow the steps below to
select another valve.
Caution
This procedure involves cycling the valve from the open to the close
position. Be certain that the system can withstand valve cycling
before proceeding. This test can be performed prior to installing the
651 controller and the valve in the system.
1. Be sure that the valve is connected to the 651 unit and the Key Lock switch is set to Local.
2. Press the [ ] and the valve [C
LOSE
] key simultaneously for about three seconds.
VALVE TYPE:
653
3. Use the Adjust knob to scroll through the display list until the type of valve connected to
your unit appears.
The display list includes the following valves:
253 STD
253 FAST
653
4. With the correct valve type displayed, press the [S
TOP
] key to select and calibrate the
appropriate valve. The valve will move (open and close) as it is being calibrated, then stop
at completion.
Note
Be sure to select the correct valve, otherwise the 651 pressure controller
will not function properly.