Tyco ACC-1 Manual Download Page 11

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TFP1090

Page 11 of 26

Step 10A.

While holding the plunger

of the Automatic Drain Valve

depressed, open the Accelerator

Control Valve one-quarter turn and

allow the water in the Accelerator

piping to blow out. After water spray

stops discharging, close the Accel-

erator Control Valve and then release

the plunger.

Step 10B.

Slowly remove the Vent

Plug located in the front of the Accel-

erator Cover and bleed off any resid-

ual air pressure in the Differential

Chamber.

Step 10C.

Unscrew (counter-clock-

wise rotation) the knurled Reset

Knob at the front of the Accelera-

tor until it resists further turning. A

click, which is the sound of the Lever

snapping back into the Set Position,

may be heard. Screw the Reset Knob

back in until it is finger tight.

NOTICE

Do not wrench on the Reset Knob,

since damage may result. The Reset

Knob will turn with finger torque only.

Step 10D.

Replace the Vent Plug.

Step 10E.

Verify that the system air

pressure has returned to normal.

Step 10F.

Using a watch, note the

time for the pressure in the Differen-

tial Chamber of the Accelerator to

increase to 0,7 bar after the Accel-

erator Control Valve is opened. The

time should be within the range of

values indicated in Table C for opti-

mum performance of the Accelerator.
If the time to pressurize the Differen-

tial Chamber to 0,7 bar is not within

the range of values given in the Table

C, then the Accelerator Control Valve

should be closed and the corrective

procedure described in the Care and

Maintenance Section of ACC-1 Tech-

nical Data Sheet TFP1112 should be

followed.

Step 10G.

When the air pressure

in the Differential Chamber of the

Accelerator is equal to that in the

system, then the Accelerator is set

and ready for service.

Step 10H.

Close the Accelerator

Control Valve and then slowly open

the Low Body Drain Valve in the

trim, to bleed off any excess water

trapped above the Dry Pipe Valve

Clapper. Close the Low Body Drain

Valve, return system pressure to its

normal value, and then re-open the

Accelerator Control Valve.

Step 11.

Partially open the Main Con-

trol Valve. Slowly close the Main Drain

Valve as soon as water discharges from

the drain connection.
Verify that there is not any water dis-

charging from the Automatic Drain

Valve.

The absence of water discharging from

the Automatic Drain Valve is an indica-

tion of a properly set water seat within

the M

del

DPV-1 Dry Pipe Valve. If

water is discharging, see the Care and

Maintenance section under the Auto-

matic Drain Valve Inspection to deter-

mine/correct the cause of the leakage

problem.
If there are no leaks, the Model

DPV-1

Dry Pipe Valve is ready to be placed

in service and the Main Control Valve

must then be fully opened.
After setting a fire protection system,

notify the proper authorities and advise

those responsible for monitoring pro-

prietary and/or central station alarms.

Step 12.

Once a week after a valve is

reset following an operational test or

system operation, the Low Body Drain

Valve (and any low point drain valves)

should be partially opened (and then

subsequently closed) to relieve drain-

back water. Continue this procedure

until drain-back water is no longer

present.

Care and

Maintenance

The following procedures and inspec-

tions should be performed as indicated,

in addition to any specific require-

ments of any authority having jurisdic-

tion. Impairments must be immediately

corrected.
The owner is responsible for the

inspection, testing, and maintenance of

their fire protection system and devices

in compliance with this document, as

well as with the applicable standards

of any authority having jurisdiction. The

installing contractor or product manu-

facturer should be contacted relative to

any questions.
Automatic sprinkler systems are rec-

ommended to be inspected, tested,

and maintained by a qualified Inspec-

tion Service.

NOTICE

The operational test procedure and

waterflow pressure alarm test pro-

cedure will result in operation of the

associated alarms. Consequently,

notification must first be given to the

owner and the fire department, central

station, or other signal station to which

the alarms are connected.
Before closing a fire protection system

Main Control Valve for maintenance

work on the fire protection system

that it controls, obtain permission to

shut down the affected fire protection

systems must first be obtained from the

proper authorities and notify all person-

nel who may be affected by this deci-

sion must be notified.

Annual Operation

Test Procedure

Proper operation of the Model DPV-1

Dry Pipe Valve (that is, opening of the

Model DPV-1 Dry Pipe Valve during

a fire condition) should be verified at

least once a year as follows:

Step 1.

If water must be prevented

from flowing beyond the riser, perform

the following steps:
•  Close the Main Control Valve.
•  Open the Main Drain Valve.
•  Open the Main Control Valve one turn

beyond the position at which water

just begins to flow from the Main

Drain Valve.

• Close the Main Drain Valve.

Step 2.

Open the system’s Inspector’s

Test Connection.

Step 3.

Verify that the Model DPV-1

Dry Pipe Valve has operated, as indi-

cated by the flow of water into the

system and that all waterflow alarms

operate properly.

Step 4.

Close the system’s Main Con-

trol Valve.

Step 5.

Reset the Model DPV-1 Dry

Pipe Valve in accordance with the Valve

Setting Procedure.
The inside of the valve is recommended

to be inspected at this time and prior

to resetting the Model DPV-1 Dry Pipe

Valve. See Steps 2 to 5 in the Inspec-

tion Procedure section on the Auto-

matic Drain Valve for instructions on

the inspection of the Clapper Facing.

Periodic Waterflow Alarm

Test Procedure

Testing of the system waterflow

alarms should be performed periodi-

cally based on the requirements of the

authority having jurisdiction. To test the

waterflow alarm, place the Three-way

Alarm Test Valve in the “Test” posi-

tion or open the Standard Alarm Test

Valve, as applicable, which will allow

a flow of water to the Waterflow Pres-

sure Alarm Switch and/or Water Motor

Alarm. Upon satisfactory completion

of the test, place the Three-way Alarm

Test Valve in the “Open” position or

close the Standard Alarm Test Valve,

as applicable.

Water Pressure

Inspection Procedure

The Water Pressure Gauge is to be

inspected periodically based on the

requirements of the authority having

jurisdiction to ensure that normal

system water pressure is being

maintained.

Summary of Contents for ACC-1

Page 1: ...recog nized by the Approval agency in addi tion to any other authorities having jurisdiction Failure to do so may impair the performance of these devices The owner is responsible for maintain ing their fire protection system and devices in proper operating condition The installing contractor or manufac turer should be contacted with any questions General Description Dry Pipe Valve The TYCO Model D...

Page 2: ...Subassembly c NO DESCRIPTION REF Clapper Assembly Repair Parts Kit Reset Plunger Parts Kit Includes Items 11 18 Includes Items 6 10 Includes Items 4 7 14 15 18 CH DN100 Valve Valves DN65 DN80 Valves DN100 Valve 92 312 2 203 92 312 2 403 DN65 DN80 Valves DN100 Valve 92 312 1 204 92 312 1 404 DN65 DN80 Valves 1 4 20 UNC x 1 2 Socket Head Cap a Screw DN100 Valve NR Not Replaceable CH Common Hardware ...

Page 3: ... Corning FS3452 b or c Grease 1 5 g Flourosilicone NO DESCRIPTION REP PART NR Air Seal O Ring Socket Head Cap Screw NR 3 8 16 UNC x 1 NO DESCRIPTION REP PART Air and Water Water Seal O Ring NR Valve Body NR NO DESCRIPTION REP PART NR Seat NR Not Replaceable CH Common Hardware Clapper Assembly Repair Parts Kit Reset Plunger Parts Kit Includes Items 14 21 Includes Items 9 13 Includes Items 7 10 17 1...

Page 4: ...inte nance Device high pressure reduc ing type Refer to Technical Data Sheet TFP1241 Quick Opening Device As an option the Model DPV 1 Dry Pipe Valve may be acquired with the Model ACC 1 Dry Pipe Valve Acceler ator See Figure 4 The Model ACC 1 Dry Pipe Valve Accelerator is used to reduce the time to valve actuation fol lowing the operation of one or more automatic sprinklers Operating Principles D...

Page 5: ...er there is a rapid and steady drop in system that is Inlet and Pilot Chamber pressure the pressure in the Differential Chamber reduces at a substantially lower rate This condi tion creates a net downward force on the Plunger which rotates the Lever As the Lever is rotated see Figure 6 the Relief Valve is raised out of the Relief Port and the Anti Flood Valve is depressed downward into the Pilot C...

Page 6: ...N WATER SUPPLY SHUT OFF OPERATED POSITION CLAPPER LATCH PIVOTS TO UNLATCH CLAPPER ASSEMBLY FROM WATER SUPPLY WATERFLOW TO SYSTEM CLAPPER LATCH PIVOTS TO ALLOW CLAPPER ASSEMBLY TO FULLY OPEN ALARM PORT OPEN TO ATMOSPHERE RESET KNOB DRAIN FROM SYSTEM COMPLETE DRAIN FROM SYSTEM CLAPPER ASSEMBLY IN SET POSITION PUSH HERE TO RESET VALVE INTERMEDIATE CHAMBER WATER SEAT VALVE WATERWAY CLAPPER ASSEMBLY AL...

Page 7: ...ERFLOW TO ALARM WATER SUPPLY SHUT OFF CLAPPER LATCH PIVOTS TO UNLATCH CLAPPER ASSEMBLY FROM WATER SUPPLY WATERFLOW TO SYSTEM CLAPPER LATCH PIVOTS TO ALLOW CLAPPER ASSEMBLY TO FULLY OPEN ALARM PORT OPEN TO ATMOSPHERE RESET KNOB DRAIN FROM SYSTEM COMPLETE DRAIN FROM SYSTEM CLAPPER ASSEMBLY IN SET POSITION PUSH HERE TO RESET VALVE INTERMEDIATE CHAMBER WATER SEAT VALVE WATERWAY CLAPPER ASSEMBLY ALARM ...

Page 8: ... See b 20 Relief Valve Seat 1 See b 21 O Ring 1 See b 22 Seal Washer 1 See b 23 Latch 1 See a 24 Fillister Hd Machine Screw 1 4 20 UNC x 1 1 2 8 See c 25 Plug Seat 1 See c 26 O Ring 1 See c 27 O Ring 1 See a 28 Reset Knob 1 See c 29 Anti Flood Seat Assembly w Ball Float 1 See b 29a Insert 1 29b Seal 1 29c Guide 1 29d Ball 1 29e Clip 1 29f O Ring 1 Requires thin film of FS3452 Fluorosilicone Grease...

Page 9: ...T INLET CHAMBER 1 2 NPT OUTLET PILOT CHAMBER EXHAUST VALVE OUTLET CHAMBER RELIEF VALVE ANTI FLOOD VALVE PLUNGER LEVER LATCH RESET KNOB RELIEF PORT FROM SYSTEM PIPING TO DRY PIPE VALVE INTERMEDIATE CHAMBER FIGURE 5 MODEL ACC 1 DRY PIPE VALVE ACCELERATOR IN SET POSITION FIGURE 6 MODEL ACC 1 DRY PIPE VALVE ACCELERATOR IN TRIPPED POSITION ...

Page 10: ...temporarily plugged and the Handhole Cover Bolts are to be tightened using a cross draw sequence Valve Setting Procedure Perform this procedure when initially setting the Model DPV 1 Dry Pipe Valve after an operational test of the fire protection system or after system operation due to a fire See Figures 7 to 18 as applicable for the given riser arrangement and proceed as follows Step 1 Close the ...

Page 11: ... Continue this procedure until drain back water is no longer present Care and Maintenance The following procedures and inspec tions should be performed as indicated in addition to any specific require ments of any authority having jurisdic tion Impairments must be immediately corrected The owner is responsible for the inspection testing and maintenance of their fire protection system and devices i...

Page 12: ...Handhole Cover Gasket and Handhole Cover in proper orien tation with valve body Ref Figure 1 and hold in place b Apply LOCTITE No 242 or equiv alent to Hex Bolt threads c Insert Hex Bolts through Hand hole Cover Gasket and Handhole Cover hand tighten into valve body d Using crossdraw sequence to assure uniformity wrench tighten Hex Bolts to appropriate torque values Ref Table D e Inspect to assure...

Page 13: ...1 1 2 Self Closing Drain Valve Pipe Nipple 1 1 2 BSP Thd x 150 mm Reducing Tee 1 1 2 x 1 1 2 x 1 2 BSP Female Thd Pipe Nipple 1 2 BSP Thd x 100 mm Pipe Nipple 3 4 BSP Thd x 100 mm Water Pressure Gauge 300 PSI 21 bar Check Valve DN15 Male Thd x DN15 Female Thd Model DPV 1 Dry Pipe Valve Groove x Groove Ball Valve DN15 with m5 Vent Hole Pipe Nipple 1 2 BSP Thd x 180 mm Pipe Nipple DN65 Valve 1 2 BSP...

Page 14: ...alve DN20 Thd Ball Valve DN50 Thd Elbow WES 3 mm m5 Pressure Alarm Switch PS10 1 1 2 Self Closing Drain Valve Pipe Nipple 2 BSP Thd x 120 mm Reducing Tee 2 x 2 x 1 2 BSP Female Thd Pipe Nipple 1 2 BSP Thd x 100 mm Pipe Nipple 3 4 BSP Thd x 100 mm Water Pressure Gauge 300 PSI 21 bar Check Valve DN15 Male Thd x DN15 Female Thd Model DPV 1 Dry Pipe Valve DN100 Groove x Groove Ball Valve DN15 with m5 ...

Page 15: ...rain Valve Ball Valve DN50 Thd Ball Valve DN20 Thd Ball Valve DN15 Thd Pressure Alarm Switch PS10 1 Pipe Nipple 3 4 BSP Thd x 120 mm Pipe Nipple 2 BSP Thd x 100 mm Pipe Nipple 1 2 BSP Thd x 100 mm Reducing Tee 2 x 2 x 1 2 BSP Female Thd Ball Valve DN15 with m5 Vent Hole Model DPV 1 Dry Pipe Valve DN150 Groove x Groove Pipe Nipple 1 2 BSP Thd x 60 mm Pipe Nipple 1 2 BSP Thd x 180 mm Water Pressure ...

Page 16: ...le 1 1 2 BSP Thd x 150 mm Pipe Nipple 3 4 BSP Thd x 100 mm Pipe Nipple DN65 Valve 1 2 BSP Thd x 120 mm Ball Valve DN15 with m5 Vent Hole Check Valve DN15 Male Thd x DN15 Female Thd Water Pressure Gauge 300 PSI 21 bar Reducing Tee 1 1 2 x 1 1 2 x 1 2 BSP Female Thd ETEMEFN ETDDMN ETDMDFN ATDMCON ATDFCON ETDDFN TTDDMDFN TTDDDFN V923221002 TTDMDDFN PTDN RTDMBFN MANIF3WAY RTDMEFN RTEMDFN 2162156 0260 ...

Page 17: ...10 1 1 2 Self Closing Drain Valve Anti Flood Fitting 3 32 Restriction Pipe Nipple 2 BSP Thd x 120 mm Pipe Nipple 3 4 BSP Thd x 100 mm Pipe Nipple 1 2 BSP Thd x 100 mm Ball Valve DN15 with m5 Vent Hole Check Valve DN15 Male Thd x DN15 Female Thd Water Pressure Gauge 300 PSI 21 bar Reducing Tee 2 x 2 x 1 2 BSP Female Thd Model DPV 1 Dry Pipe Valve DN100 Groove x Groove ETEMEFN ETDDMN ETDMDFN ATDMCON...

Page 18: ...0 1 Ball Valve DN15 Thd Ball Valve DN20 Thd Ball Valve DN50 Thd Ball Valve DN15 with m5 Vent Hole Pipe Nipple 2 BSP Thd x 100 mm Pipe Nipple 1 2 BSP Thd x 120 mm Model DPV 1 Dry Pipe Valve DN150 Groove x Groove Reducing Tee 2 x 2 x 1 2 BSP Female Thd Water Pressure Gauge 300 PSI 21 bar Check Valve DN15 Male Thd x DN15 Female Thd Anti Flood Fitting 3 32 Restriction ETEEMN ETDMDFN ATDMCON ATDDMN ATD...

Page 19: ...0 PSI 21 bar Pressure Alarm Switch PS10 1 Ball Valve DN20 Thd Ball Valve DN15 Thd Ball Valve DN40 Thd Elbow WES 3 mm m5 Pipe Nipple 1 2 BSP Thd x 60 mm Pipe Nipple 1 2 BSP Thd x 180 mm Pipe Nipple 3 4 BSP Thd x 100 mm Pipe Nipple 1 2 BSP Thd x 100 mm Pipe Nipple 1 1 2 BSP Thd Air Pressure Gauge 250 PSI Ball Valve DN15 with m5 Vent Hole Reducing Tee 1 1 2 x 1 1 2 x 1 2 BSP Female Thd Adapter Fittin...

Page 20: ...oove x Groove Model ACC 1 Dry Pipe Valve Accelerator Check Valve DN15 Male Thd x DN15 Female Thd 1 2 Self Closing Drain Valve Water Pressure Gauge 300 PSI 21 bar Pressure Alarm Switch PS10 1 Ball Valve DN20 Thd Ball Valve DN15 Thd Ball Valve DN50 Thd Elbow WES 3 mm m5 Pipe Nipple 1 2 BSP Thd x 180 mm Pipe Nipple 2 BSP Thd x 120 mm Pipe Nipple 3 4 BSP Thd x 100 mm Pipe Nipple 1 2 BSP Thd x 100 mm P...

Page 21: ... x DN20 Female Thd Elbow DN15 Male Thd x DN15 Female Thd Adapter Fitting DN15 x DN15 Male Thd Pipe Nipple 1 BSP Thd x 80 mm Elbow DN15 x DN15 Male Thd Copper Tube 15 x 1 mm Type D Reducer DN20 Female Thd x DN15 Male Thd Adapter Tee DN15 x DN15 x DN15 Female Thd Pressure Relief Hose Transparent 3 x 6 x 1 2 m Copper Tube 15 x 1 mm Type C Ball Valve 3 way 1 2 BSP Copper Tube 15 x 1 mm Type B Adapter ...

Page 22: ...lve 1 2 BSP Thd x 120 mm Model ACC 1 Dry Pipe Valve Accelerator Anti Flood Fitting 3 32 Restriction Ball Valve DN15 with m5 Vent Hole Reducing Tee 1 1 2 x 1 1 2 x 1 2 BSP Female Thd Air Pressure Gauge 250 PSI Pipe Nipple 1 1 2 BSP Thd Pipe Nipple 3 4 BSP Thd x 100 mm Pipe Nipple 1 1 2 BSP Thd x 150 mm Pipe Nipple 1 2 BSP Thd x 60 mm Plug 3 4 BSP Thd 406012 025500013 305105 0260 2162156 1610000480 ...

Page 23: ...e Alarm Switch PS10 1 Water Pressure Gauge 300 PSI 21 bar Ball Valve DN50 Thd Ball Valve DN20 Thd Ball Valve DN15 Thd Pipe Nipple 1 2 BSP Thd x 100 mm Model ACC 1 Dry Pipe Valve Accelerator Anti Flood Fitting 3 32 Restriction Ball Valve DN15 with m5 Vent Hole Reducing Tee 2 x 2 x 1 2 BSP Female Thd Air Pressure Gauge 250 PSI Pipe Nipple 2 BSP Thd Pipe Nipple 3 4 BSP Thd x 100 mm Pipe Nipple 2 BSP ...

Page 24: ...Male Thd Elbow DN20 Male Thd x DN20 Male Thd Elbow DN15 Male Thd x DN15 Female Thd Pressure Relief Hose Transparent 3 x 6 x 1 2 m Spring Loaded Check Valve 1 2 NPT Adapter Tee DN15 x DN15 x DN15 Female Thd Reducer DN20 Female Thd x DN15 Male Thd Copper Tube 1 mm x 1 m Manifold Adapter Tee Adapter Tee ETEMEFN ETDDMN ATDMCON ATDFCON ETDMCON ETDMDFN ETEEMN TTDDMDFN TTDDDFN RTDMBFN RTDMEFN MANIF3WAY V...

Page 25: ...PSWITCHBI2DN15 Air Pressure Relief Valve Factory set at 3 1 bar 92 343 1 020 Model WMA 1 Water Motor Alarm Red Finish Gong 52 630 1 021R A through Z Labels for Attaching to Valve Components WS00000033 Supervisory Switch for Alarm Test Shut off Valve WS00000011 Low Pressure Switch Kit CEDPV1LPS SIZE 0 DN65 73 0 mm 3 DN80 88 9 mm 4 DN100 114 3 mm 6 DN150 168 3 mm 7 165 1 mm TRIM 88 EUR FM with Three...

Page 26: ...otection Association LOCTITE is a registered trademark of Henkel Corporation 1400 Pennbrook Parkway Lansdale PA 19446 Telephone 1 215 362 0700 2020 Johnson Controls All rights reserved All specifications and other information shown were current as of document revision date and are subject to change without notice ...

Page 27: ...alves after water ceases to discharge and leave the Main Drain Valve F open Step 2 Place the Three Way Alarm Control Valve E in the open position Step 3 Replace the sprinklers that have operated and the sprinklers close to the fire Step 4 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 5 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar and th...

Page 28: ...in Valve F open Step 2 Place the Three Way Alarm Control Valve E in the open position Step 3 Replace the sprinklers that have operated and the sprinklers close to the fire Step 4 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 5 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar and then open and close each auxiliary drain valves in the sys tem...

Page 29: ...in Valve F open Step 2 Place the Three Way Alarm Control Valve E in the open position Step 3 Replace the sprinklers that have operated and the sprinklers close to the fire Step 4 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 5 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar and then open and close each auxiliary drain valves in the sys tem...

Page 30: ...alve E verify that the alarm signal created by the Waterflow Pressure Alarm Switch M is visible at the fire panel If appli cable check the sound of the Water Motor Alarm it must be clear and steady Step 2 Close the Alarm Test Valve E verify that the normal supply and sys tem pressures are restored If the sup ply pressure is below the normal use the instructions from the water supply to obtain the ...

Page 31: ...e Alarm Switch M is visible at the fire panel If appli cable check the sound of the Water Motor Alarm it must be clear and steady Step 2 Close the Alarm Test Valve E verify that the normal supply and sys tem pressures are restored If the sup ply pressure is below the normal use the instructions from the water supply to obtain the usual pressure Step 3 Close the Pressure Switch Valve J and verify o...

Page 32: ... discharge and leave the Main Drain Valve F open Step 2 Replace the sprinklers that have operated and the sprinklers close to the fire Step 3 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 4 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar and then open and close each auxiliary drain valves in the sys tem piping to drain any remaining water ...

Page 33: ... IV Placing the System Back in Service Step 1 Close the auxiliary drain valves after water ceases to discharge and leave the Main Drain Valve F open Step 2 Place the Three Way Alarm Control Valve E in the open position Step 3 Replace the sprinklers that have operated and the sprinklers close to the fire Step 4 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 5 Via the Ai...

Page 34: ...drain valves after water ceases to discharge and leave the Main Drain Valve F open Step 2 Place the Three Way Alarm Control Valve E in the open position Step 3 Replace the sprinklers that have operated and the sprinklers close to the fire Step 4 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 5 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar...

Page 35: ...drain valves after water ceases to discharge and leave the Main Drain Valve F open Step 2 Place the Three Way Alarm Control Valve E in the open position Step 3 Replace the sprinklers that have operated and the sprinklers close to the fire Step 4 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 5 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar...

Page 36: ... cross mains and branch lines are drained IV Placing the System Back in Service Step 1 Close the auxiliary drain valves after water ceases to discharge and leave the Main Drain Valve F open Step 2 Replace the sprinklers that have operated and the sprinklers close to the fire Step 3 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 4 Via the Air Supply Control Valve K pres...

Page 37: ...rvice Step 1 Close the auxiliary drain valves after water ceases to discharge and leave the Main Drain Valve F open Step 2 Replace the sprinklers that have operated and the sprinklers close to the fire Step 3 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 4 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar and then open and close each auxilia...

Page 38: ...rvice Step 1 Close the auxiliary drain valves after water ceases to discharge and leave the Main Drain Valve F open Step 2 Replace the sprinklers that have operated and the sprinklers close to the fire Step 3 Push down on the reset knob P to allow the Dry Pipe Valve D to re seat Step 4 Via the Air Supply Control Valve K pressurize the system with air to 0 7 bar and then open and close each auxilia...

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