Murphy LS200N, L1100 manual Instructions, Dvo

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Instructions

1.Block off and bleed the instrument gas pressure supply to the LS200NDVO/DVOR.

2.Remove the tubing between the LS200NDVO/DVOR and the scrubber dump valve, and remove the supply gas tubing (regulator [-R-] if used).

3.Remove the LS200NDVO/DVOR from the vessel (optional).

4.If the LS200NDVO/DVOR was removed from the vessel, mount it in a suitable vise on a work bench (if possible).

5.Using the proper tools, disconnect the Inlet, Outlet, and Exhaust fittings from the existing DVO. See Figure 1. You will re-connect these to the new DVO in a later step.

NOTE: The following steps must be done with the DVO in the upright position (on top of the LS200NDVO).

6.Remove the LS200NDVO/DVOR cover. The use of a strap wrench or a pipe wrench may be needed.

7.With a 9/16” hex wrench, loosen the hex head bolt on top of the DVO and remove the existing DVO from the body.

8.Ensure that the adjustable orifice is fully raised up so that the actuator arm is not bent when inserted into the body. See Figure 2.

9.Insert the new DVO onto the body. The DVO manual valve operator must face away from the vessel. See Figure 3.

Figure 1 - DVO

Figure 2 – Adjustable Orifice

Section 15

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Contents LS200, LS200N LS200NDVOR Series L1100 Liquid Level Switches Before Beginning Installation of this Murphy Product Table of Contents This page Intentionally Left Blank Features Product InformationLS200 LS200NDVOR LS200NDVO LS200NPressure Vessel Installation LS200, LS200N and L1100 Direct Installation into the Wall of the Pressure VesselInstallation with a Weld Collar Installation Using Murphy External Float Chamber Installation and Adjustment for Pneumatic ModelsTrip Cam Operating Lever Orientation Replacing and Installing the DVO Assembly Models LS200NDVO & LS200NDVOR Tools NeededInstructions DVOOrifice Adjustment with float Electrical Replacement Parts LS200NDVO and LS200NDVORAccessories L1100Weld Collar 55050617 DVU150/DVU175 Adapter BushingExternal Float Chamber CB External Float ChamberFloat Shaft Extension Specifications All ModelsSection 00-02-0563 01-11-06