Viking F-1 Manuel de service télécharger pdf (Page 7)

TECHNICAL DATA

March 28, 2013

Dry 120g

DRY VALVE

MODEL F-1

The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058

Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com

8. Compare test results with previous flow information. If deterioration of the water supply is detected, take appropriate steps

to restore adequate water supply.

9. 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.

10. Notify the Authority Having Jurisdiction that the test is complete. Record and/or provide notification of test results as

required by the Authority Having Jurisdiction.

C. Priming Water Level, and Low Air Alarm Test

Quarterly testing is recommended to verify that water is NOT present above the Priming Level Test Valve in the dry valve trim.

Quarterly testing of low air alarms is recommended.

1. Notify the Authority Having Jurisdiction and those in the area affected by the test.

2. Close the water supply main control valve supplying the dry valve.

3. Open the main drain valve (located on the inlet of the dry valve).

If the dry valve being tested is equipped with a Viking accelerator and external anti-ood device installed according to Viking

Model E-1 Accelerator Trim Charts, performing steps 6 or 7 of this test will cause the accelerator to operate. A burst of air from

the vent in the bottom of the accelerator will indicate operation of the accelerator. However, with the water supply main control

valve CLOSED and the main drain valve OPEN, operation of the accelerator should not trip the dry valve.

6. Dry valve priming water level test:

a. Verify that the water supply main control valve is closed and the main drain valve is open.

b. Fully open the priming level test valve in the dry valve trim to check for the presence of water. If an accelerator is

installed, this may cause the dry valve to trip. If the presence of water is detected, the system may not have been

properly drained. Perform steps 1 through 3, and 11 through 15 of section 4-B PLACING DRY VALVE IN SERVICE,

and repeat this dry valve priming water level test.

c. If/when no water is detected and the test is complete, continue to step 8.

7. Low Air Alarm Test:

a. Verify that the water supply main control valve is closed and the main drain valve is open.

b. Gradually open the priming level test valve in the trim of the dry valve to simulate operation of the dry system. Observe

and record the pressure at which the low air alarm operates.

8. Close the priming level test valve.

9. If the dry valve being tested is equipped with a Viking accelerator and external anti-flood device:

a. Close the ½” (15 mm) NPT anti-flood isolation valve.

NOTE: AIR WILL CONTINUE TO FLOW FROM THE ACCELERATOR AFTER IT HAS OPERATED UNTIL STEP “B” BELOW IS

PERFORMED.

b. Loosen (use the appropriate wrench), and remove the accelerator air gauge to release pressure from the upper

chamber of the accelerator. When the accelerator re-sets, re-install the accelerator air gauge.

10. Perform steps 13 through 20 of section 4-B PLACING DRY VALVE IN SERVICE.

TRIP TESTS

Partial Flow Trip Tests are conducted with the water supply main control valve partially closed to minimize the amount of water enter-

ing the system during the test. Performance of a Partial Flow Trip Test is recommended during warm weather at least annually except

when a Full Flow Trip Test is conducted. Partial Flow Trip Tests may verify operation of equipment and devices but do not simulate

operation of the system in re conditions.

Full Flow Trip Tests are conducted with the water supply main control valve fully open. The dry valve is operated by opening the

system test valve to simulate the opening of a sprinkler in re conditions. When the dry valve operates, the sprinkler piping will be

ooded with water. Performance of a Full Flow Trip Test is recommended during warm weather at least once every three years. More

frequent testing may be required by the Authority Having Jurisdiction.

A. Full Flow Trip Test

1. Notify the Authority Having Jurisdiction and those in the area affected by the test.

NOTE: ALARMS AND ELECTRIC PANELS CONTROLLED BY AN ALARM PRESSURE SWITCH INSTALLED IN THE “ELEC-

TRIC ALARM PANEL CONNECTION” CANNOT BE INTERRUPTED (SEE DRY VALVE TRIM CART).

2. Fully open the main drain (located on the base of the dry valve) to flush away any accumulation of foreign material.

3. Close the main drain.

4. Record water supply pressure and system pneumatic pressure.

5. Open the remote system test valve to simulate operation of the dry system.

Record:

Elapsed time from opening of the test valve to operation of the dry valve.a.

1 2 3 4 5 6 7 8 9 10 11 12

Commentaires sur ces manuels

Pas de commentaire

Viking F-1 Manuel de service Page 7

Commentaires sur ces manuels

Produits connexes et manuels pour Outils de jardin Viking F-1