Specifications

Section 15 00-02-0671

2014-08-27 - 6 -

Installation and Adjustment for Pneumatic Models

All pneumatic models operate on the vent

principle. The pneumatic signal source must

be clean, dry instrument-quality air or

natural gas. The input pneumatic signal

must be regulated between 30 and 70 psi

(207-483 kPa) [2 -4.83 bar]. If produced gas is

used as the signal source, it should be taken

after gas passes through the final scrubber. A

suitable filter must be positioned before the

LS200NDVO to prevent liquids and/or

particulates from entering the dump valve

operator.

NOTE: Check filter periodically for wear and tear and elements that

hamper the flow of the pneumatic signal.

2. All pressure connections must be tight and maintained tight so as not to leak air/gas.

CAUTION: Avoid excessive Teflon tape which may inhibit proper

operation.

Each switch is set to vent on rising level at the factory and should

not need field adjustment. For testing the system, we have

provided the red Manual Valve Operator on the operator pilot valve.

3. Valve seat adjustment can be made if air/gas begins to leak. Care should be

taken when adjusting as only slight movement is necessary to stop the

leakage; excessive force will bind the seating mechanism. See the instruction

below for adjustment.