BERMAD 400E-Y, Инструкция по установке, эксплуатации и обслуживанию

Страница: 55 / 71

appliceng@bermad.com
●
www.bermad.com
The information contained in this document is subject to change without notice. BERMAD shall not be liable for any errors contained herein.
All Rights Reserved. © Copyright by BERMAD Control Valves.
22
.
02
.
12
IOM
Model: 42T
PAGE 6 OF 1
8. Maintenance and Inspection Test
8.1
Normal Conditions
WARNING
: Do not turn off the water supply to make repairs without placing a roving fire patrol in the
area covered by the system. The patrol should continue until the system is back in service.
Prior to turning off any valves or water supply, notify local site fire officials.
In any of the following inspections or testing procedures, if an abnormal condition exists, see
Troubleshooting for possible cause and corrective action.
The Bermad 42T Pressure-Reducing Valve is to be inspected, tested and maintained in accordance with
the Standard for the Inspection, Testing and Maintenance of Water-Based Fire Protection Systems,
NFPA 25.
8.1.1 All main isolating valves should indicate a fully open position.
8.1.2 Upstream pressure gauge should (2 figure 2) reflect the upstream pressure supplied to the valve.
8.1.3 Downstream pressure gauge should be according to the system design criteria.
8.2
Quarterly Inspection
8.2.1 The system should be checked for normal condition.
8.2.2 Check that the main valve, pilot system, accessories, tubing & fittings, are all in good condition,
damage free and not leaking.
8.2.3 The fastening nut of the pilot valve ( 4 figure 2 ) adjusting screw , should be fastened tightly.
8.3
Annual Inspection and Test
8.3.1 Complete Quarterly Inspection.
8.3.2 Conduct a flow test in systems nominal flow. The downstream pressure gauge should show the
adjusted downstream pressure, and according to the system design criteria, this pressure
should be stable.
If re-adjusting is needed it should be according to paragraph 5.
8.4
Five-Years Inspection and Test
8.4.1 Complete Weekly and Monthly inspections.
8.4.2 Place the system out of service (See “Removing the System from Service” above).
8.4.3 The interior of the Control Valve should be cleaned and inspected.
8.4.4 The Elastomeric Diaphragm Assembly shall be inspected for wear, and shall be replaced with a new
Diaphragm.
8.4.5 Place the system back in service. (See instructions "Placing the System in Service").
8.4.6 The valve and the pilot system must be activated at full flow.
8.4.7 Take all additional measures as required by NFPA-25 "Standard for the Inspection Testing and
Maintenance of Water-Based Fire Protection Systems."