Page 35 - Red-E Cabinet DV-5A Installer's Manual
P. 35

NOTICE
After any downstream pressure adjustment, the following items are to be recorded on a tag attached to the valve:
• Valve installation location
• Inlet static pressure
• Inlet residual pressure
• Outlet residual pressure
• Intended outlet flow
The tag is not to be removed until after the system has been accepted by the authority having jurisdiction. It is rec- ommended that the tag not be removed even after acceptance by the authority having jurisdiction unless another means of record keeping is maintained.
Pressure in the Pilot Valve is factory-set. To re-adjust the pressure, set the valve first, according to the Valve Setting Procedure described in this technical data sheet, then follow the steps below. Refer to Figure 12 as needed.
Step 1. To set the pressure in the field, trip the valve manually or electrically. It is recommended that the valve is tripped electrically to test the entire system.
Step 2. Remove the Tamper Cap of the Pilot Valve by first loosening the Set Screw and unscrewing the Tamper Cap.
Step 3. If surging flow occurs, attempt to bleed trapped air from the system via the Automatic Drain Valve. Step 4. Loosen the Lock Nut on the Adjusting Screw of the Pilot Valve.
Step 5. Turn the Adjusting Screw clockwise to increase outlet pressure or counterclockwise to decrease outlet pressure.
Step 6. Observe the Outlet Pressure Gauge for changes. The valve needs time to reach the new set point after changing the preset pressure. Turn the Adjusting Screw 1/2 a turn at a time until the pressure stabilizes.
If necessary, turn the Adjusting Screw again until the desired set point is achieved. Step 7. After the desired performance, tighten the Lock Nut.
Step 8. Replace the Tamper Cap and tighten the Set Screw.
Step 9. Ensure that the system is properly drained.
The DV-5A Deluge Valve is now set for service.
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