Tyco DV-3HP Manual page 19

TFP1355
rubber or the five year inspection indi-
cates a build-up of debris within the
valve that could affect its proper opera-
tion, then the frequency of the internal
valve inspection procedure should be
increased as appropriate.
Worn or damaged parts must be re-
placed and the DV-3HP Valve must be
reassembled in accordance with Fig-
ure 1. The Cap Screws securing the
Cover should be uniformly tightened
using a cross-draw sequence.
Quarterly Solenoid Valve Test
Procedure For Electric Actuation
Proper operation of the Solenoid Valve
for electric actuation must be verified
at least quarterly as follows:
Step 1. Close the Main Control Valve.
Step 2. Open the Main Drain Valve.
Step 3. Test the automatic control unit
(deluge releasing panel) in accord-
ance with the manufacturer's instruc-
tions to energize the solenoid valve.
Step 4. Verify that the flow of water
from the Solenoid Valve drain connec-
tion increases to a full flow.
Step 5. Verify that the Diaphragm
Chamber pressure has decreased to
below 25% of the water supply pres-
sure.
Step 6. Reset the electric detection
system in accordance with the manu-
facturer's instructions to de-energize
the solenoid valve. Check the Solenoid
Valve drain for leaks. Any leaks must
be corrected before proceeding to the
next step.
Step 7. Slowly open the Main Control
Valve. Close the Main Drain Valve as
soon as water discharges from the
drain connection. Observe the Auto-
matic Drain Valve for leaks. If there are
leaks, determine/correct the cause of
the leakage problem. If there are no
leaks, the DV-3HP Valve is ready to be
placed in service and the Main Control
Valve must then be fully opened.
Quarterly Waterflow Alarm Test
Procedure
Testing of the system waterflow alarms
must be performed quarterly. To test
the waterflow alarm, open the Alarm
Test Valve, allowing a flow of water to
the Pressure Alarm Switch and/or
Water Motor Alarm. Upon satisfactory
completion of the test, close the Alarm
Test Valve.
Quarterly Dry Pilot Actuator Test
Procedure For Dry Pilot Actuation
Proper operation of the Dry Pilot Ac-
tuator for dry pilot actuation must be
verified at least quarterly as follows:
Step 1. Close the Main Control Valve.
Step 2. Open the Main Drain Valve.
Step 3. Open the Inspector's Test Con-
nection on the Dry Pilot Line.
Step 4. Verify that the flow of water
from the Dry Pilot Actuator drain con-
nection increases to a full flow.
Step 5. Verify that the Diaphragm
Chamber pressure has decreased to
below 25% of the water supply pres-
sure.
Step 6. Close the Inspector's Test
Connection and allow the dry pilot line
pressure to re-establish. Check the
Dry Pilot Actuator drain for leaks. Any
leaks must be corrected before pro-
ceeding to the next step.
Step 7. Slowly open the Main Control
Valve. Close the Main Drain Valve as
soon as water discharges from the
drain connection. Observe the Auto-
matic Drain Valve for leaks. If there are
leaks, determine/correct the cause of
the leakage problem. If there are no
leaks, the DV-3 Valve is ready to be
placed in service and the Main Control
Valve must then be fully opened.
Quarterly Low Pressure Alarm
Test Procedure And Condensate
Drain Procedure For Dry Pilot
Actuation
For Dry Pilot Actuation, testing of the
Low Pressure Alarm Switch and drain-
age of the pilot line condensate should
be performed quarterly as follows.
Step 1. Close the Diaphragm Cham-
ber Supply Control Valve.
Step 2. Close the Main Control Valve.
Step 3. Open the Main Drain Valve.
Step 4. Drain the dry pilot line conden-
sate as follows.
• Close the Gauge Test Valve located
below the Dry Pilot Line Pressure
Gauge.
• Remove the 1/4 inch Plug from the
Gauge Test Valve.
• Crack Open the Gauge Test Valve
and allow all condensate, if any, to
drain out.
• Close the Gauge Test Valve, re-
place the Plug, and then open the
Gauge Test Valve.
Step 5. Open the Inspector's Test Con-
nection, and slowly relieve pneumatic
pressure. Verify that the Low pressure
Alarm Switch is operational and that
the low pressure set points are as fol-
lows:
• Low pressure alarm setting at ap-
proximately 6 psi (0,4 bar) below the
minimum pilot line service pressure
requirement shown in Graph C.
Page 19 of 20
• Fire alarm setting at approximately
15 psi (1,0 bar) below the minimum
pilot line service pressure require-
ment shown in Graph C.
Step 6. Close the Inspector's Test
Connection, and allow the Dry Pilot
Line to automatically repressurize.
Step 7. Open the Diaphragm Chamber
Supply Control Valve.
Step 8. Slowly open the Main Control
Valve. Close the Main Drain Valve as
soon as water discharges from the
drain connection. Observe the Auto-
matic Drain Valve for leaks. If there are
leaks, determine/correct the cause of
the leakage problem. If there are no
leaks, fully open the Main Control
Valve.