Page 43 - Red-E Cabinet DV-5A Installer's Manual
P. 43

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 OP 1
Step 1. Close the System Main Control Valve (2).
Step 2. Close the Diaphragm Supply Valve (5) and Air Supply Valve (27).
DV-5A Valve Auto. System Main Control Valve N.O. Automatic Drain Valve Auto. Main Drain Valve N.C. Diaphragm Supply Valve N.O. Manual Reset Actuator
Solenoid Valve Auto. Manual Control Station N.C. Alarm Test Valve N.C. Drip Funnel Drain
Water Supply Gauge
Water Supply Gauge Test Valve N.O. Diaphragm Supply Strainer
Diaphragm Supply Check Valve Auto. Diaphragm Gauge
System Riser
Drain Header
Supply Header
Waterflow Pressure Switch
Water Motor Alarm Connection
Downstream Shut Off Valve N.O. Funnel Drain Check Valve Auto. System Drain Valve N.C. System Gauge
System Gauge Valve N.O. Air Check Valve Auto. Air Supply Valve N.O. Air Pressure Relief Valve Auto. Air Supply Connection N.O. Low Pressure Switch
Dry Pilot Actuation Auto. Alarm Control Valve (Optional) N.O.
  Figure 14 Double Interlock Preaction Electric Pneumatic Actuation Schematic Piping Diagram
Step 3. Open the Main Drain Valve (4), System Drain Valve (23), and all auxiliary drains in the system. Close the auxiliary drain valves and the System Drain Valve (23) after water ceases to discharge. Leave the Main Drain Valve (4) open.
At this time make certain that the Pressure Gauge Valves and the Alarm Control Valve (OP 1), as applicable, are open.
Do not open the Inspector’s Test Connection and auxiliary drains if resetting after a system test; otherwise, system air pressure will be relieved unnecessarily.
Step 4. Depress the plunger of the Automatic Drain Valve (3) to verify that it is open.
Step 5. Clean the Diaphragm Supply Strainer (13) by removing the clean-out plug and strainer basket. The Dia-
phragm Supply Strainer (13) may be flushed out by momentarily opening the Diaphragm Supply Valve (5).
Step 6. Inspect for and clear all ice plugs where system piping has been exposed to freezing conditions and when there has been a flow of water into the system.

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