Chapter 3 - Installation
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MNL000624.doc
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06/25/2019
Chemical Equipment
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Confidential and Proprietary Data
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operator to go to other menu screens. Any open valve will remain open, and the Mode Status
Box will
continue to indicate manual mode. Manual mode will remain active or ‘secured’ until
an operator re-
enters the Manual Mode window. While manual mode is ‘secured’, Manual
Mode will be the only selectable option on the Main Menu.
ChemGuard® must not be left unattended in
Manual Mode, as access to the system in
Manual Mode is open to anyone.
NOTE:
Pressing “CANCEL” will automatically close any valves which were left open
unless the secure mode feature is used as seen below.
3.12 Regulator Adjustment
3.12.1
Bubbler PT1/PT2 and R1 Test and Adjustment
Test Bubbler PT1 and PT2 while adjusting Regulator R1 together at same time
1. Turn main supply gas off to the CG050, 0psig
2. Slowly open regulator R1 by turning R1 fully clockwise
3. Step to CHEM ON Menu
4. Step to Manual Mode and open V4, V1 and V6. Verify valve indicator switches from
green to red
5. Vent off pressure to PT1 by opening V5
6. Confirm PT1/PT2 pressure drops to 0psig. Close V5
7. Set main supply gas pressure to10psig. Verify PT1/PT2 reads 10.0 ± 00.5 psig
8. Set main supply gas pressure to 25, 35 & 55 psig. At each setting verify PT1/PT2
reads setting ± 00.5 psig
9. Return main gas supply pressure to original setting, 60-90 psig
10. Slowly close regulator R1 by turning R1 fully counterclockwise
11. Close V1 and open V5 (V4 and V6 open). Confirm PT1/PT2 pressure drops to 0 psig.
Close V5
12. Open V1
13. Slowly open regulator R1 by turning R1 clockwise to user selected pressure setting,
typically 25 psig at both PT1/PT2
14. Close V1, V4 and V6
NOTE
:
Regulator is not self venting. If the desired push pressure is exceeded the flow
path must be vented in manual mode, then the pressure regulator adjustment
repeated.