Title Page
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Site conducted
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Conducted on
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Prepared by
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Location
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Work Order
Untitled Page
(T)ools, (S)afety Equipment and (M)aterials
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Mechanic's toolset
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Flashlight
Safety Guidelines
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Schedule work with operating personnel
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Check with operating personnel for deficiencies
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Follow site safety rules and your supervisor's instructions
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Obtain and review manufacturer's instructions
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Report any problems you find
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Record the results in the equipment history log
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Verify proper signal at FACP
Maintenance Procedures
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Check pressure gauges located on the supply side and system side of the dry valve. Verify that the proper ratio of air pressure to water supply pressure is being maintained
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Verify that the intermediate chamber of the dry valve is free of water. No water should flow from the drip check when the plunger is pushed
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Verify that there is no air coming out of the 1/2” outlet of the PORV
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If equipped with a Viking accelerator: Check the air pressure gauge located on the top of the accelerator. Air pressure in the upper chamber of the accelerator should equal the pneumatic pressure maintained in the system.
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Check for signs of mechanical damage and/or corrosive activity. If detected, perform maintenance as required or, if necessary, replace the device
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Verify that the dry valve and trim are adequately heated and protected from freezing and physical damage
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Confirm that all valves are in their normal operating positions
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Perform a water flow alarm test
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Notify the authority having jurisdiction and those in the area affected by the test
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To test the local electric alarm (if provided) and/or mechanical water motor gong (if provided); OPEN the alarm test valve in the dry valve trim. The electric alarm pressure switches should activate. Electric local alarms should be audible. The local
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When testing is complete, close the alarm test valve
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Verify that all local alarms stop sounding, and alarm panels (if provided) reset. Verify that all remote station alarms reset. Verify that all supply piping to water motor properly drain
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Verify that the alarm test valve is CLOSED
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Verify that the intermediate chamber of the dry valve is free of water. No water should flow from the drip check when the plunger is pushed.
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Perform a main drain test
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Notify the authority having jurisdiction and those in the area affected by the test
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Record the pressure reading from the water supply pressure gauge
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Verify that the intermediate chamber of the dry valve is free of water. No water should flow from the drip check when the plunger is pushed.
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Verify that there is no air coming out of the 1/2” outlet of the PORV
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Verify that the dry pipe system is pressurized at or above the minimum pressure recommended in Table 2 for the water supply pressure available
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Fully OPEN the main drain valve located on the base of the dry valve
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When a full flow develops from the main drain, record the residual pressure from the water supply pressure gauge
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When the test is complete, SLOWLY CLOSE the main drain
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Compare the test results with previous flow information. If deterioration of the water supply is detected, take appropriate steps to restore adequate water supply
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Verify that normal water supply pressure and system pneumatic pressure have been restored, and that all alarm devices and valves are secured in normal operating position.
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Perform a low air alarm test
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Close the water supply main control valve supplying the dry valve
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Close the priming valve
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Open the flow test valve (located on the inlet of the dry valve)
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If the dry valve being tested is equipped with a Viking Model E-1 Accelerator, performing step 6 of this test will cause the accelerator to operate. A burst of air from the vent in the bottom of the<br>accelerator will indicate operation of the accelerator.
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Verify that the water supply main control valve is closed, and the flow test valve is open. Gradually and record the pressure at which the low air alarm op
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Close the main drain valve
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Place the valve in service in accordance with the manufacturer's instructions
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Wipe down the unit
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Verify that the water supply main control valve is open, and all other valves are in their normal operating position
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Record and/or provide notification of test results
Maintenance Hours
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Time spent on work order?
