SCS LABCOTER 2, Operator'S Manual

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OM-610-1002-1 Operator’s Manual Rev 37
PDS-2010 SECTION 6 MAINTENANCE page
43
6.3.3 Calibrating the Granville-Phillips Zero Pressure Simulator
Calibration of the amplifier circuit board requires the use of a Convectron Zero Pressure Simulator, SCS Part
No. 20232. This simulator may be calibrated by following the instructions provided with the unit.
NOTE: The simulator calibration does not require a Model 275 Convectron controller as described in the
instructions. Energizing the simulator with the 2010 amplifier circuit board instead of the Convectron
controller will achieve identical results.
6.3.4 Verifying the WEST Model 6100+ Vacuum Process Controller
To verify proper calibration of the vacuum process controller, perform the following:
1. Remove all power to the machine.
2. Remove the cabinet side panels.
3. Replace the lead wires at terminals 4 and 5 of the controller with leads from a qualified variable
voltage source capable of 0-10 volts output and accurate to ± 0.001 volt. Pin 5 of the controller is the
positive (+) terminal.
4. Re-install the control panel and turn on the Main Power.
5. Provide voltage input to the process controller per the following chart:
INPUT VOLTAGE REFERENCE
PROCESS VALUE
REQUIRED ACCURACY
0.000 V -4 ± 3 units
10.000 V 1112 ± 5 units
6. If a process value set point reading of the controller is out of the specified accuracy range, then the
controller requires re-calibration (this should be a very rare occurrence). Contact WEST or your local
service provider.
7. If the controller reading is within specification, remove machine power, disconnect the voltage
source, re-install the machine input leads, and re-install the control panel. Verification is complete.