condition) should be verified at least once a year as fol-
lows:
1. If water must be prevented from flowing beyond the
riser, perform the following steps.
a. Close the Main Control Valve.
b. Open the Main Drain Valve.
c. Open the Main Control Valve one turn beyond the
position at which water just begins to flow from the Main
Drain Valve.
d. Close the Main Drain Valve.
2. Open the system’s Inspector’s Test Connection.
3. Verify that the Model A-1 Dry Pipe Valve has operated,
as indicated by the flow of water into the system and
that all waterflow alarms operated properly.
4. Close the system’s Main Control Valve.
5. Reset the Model A-1 Dry Pipe Valve in accordance with
the Valve Setting Procedure.
Quarterly Waterflow Alarm Test Procedure
Testing of the system waterflow alarms should be per-
formed quarterly. To test the waterflow alarm, open the
Alarm Test Valve, which will allow a flow of water to the
Waterflow Pressure Alarm Switch and/or Water Motor
Alarm. Upon satisfactory completion of the test, close the
Alarm Test Valve. After the test is completed, open the
Alarm Line Drain Valve and then close the Alarm Line
Drain Valve after water ceases to drain.
Water Pressure Inspection
The Water Pressure Gauge is to be inspected each week
to ensure that normal system water pressure is being
maintained.
Air Pressure Inspection
The Air Pressure Gauge is to be inspected each week to
ensure that normal system air pressure is being main-
tained.
Automatic Drain Valve Inspection
The Automatic Drain Valve should be inspected each
week by depressing the plunger and checking to ensure
that the Automatic Drain Valve is not discharging water
and/or air. Discharging of water and/or air is an indication
that the air and/or water seats are leaking, which could
subsequently cause a false operation should the interme-
diate chamber become inadvertently pressurized.
If leakage is present, take the Model A-1 Dry Pipe Valve
out of service (i.e., close the main control valve, open the
main drain valve, close the air supply control valve, close
the Accelerator Control Valve, as applicable, and open
the Inspector’s Test Connection to relieve the system air
pressure to 0 psig as indicated on the System Air Pres-
sure Gauge). After removing the Handhole Cover, check
the following items:
A. Clapper Facing: Make sure that the Clapper Facing
does not show signs of compression set, damage, etc.
Replace the Clapper Facing if there are any signs of
wear.
B. Alarm Test Valve: Make certain that the Alarm Test
Valve is completely closed. Replace the Alarm Test
Valve if necessary.
C. Air and Water Seat Rings: Inspect the Air and Water
Seat Rings for nicks. If there are signs of wear and the
replacement of the Clapper Facing does not stop leak-
age from the Automatic Drain Valve, the Dry Pipe Valve
must be replaced, since the Air and Water Seat Rings
are not field replaceable.
Priming Water Inspection
The priming level is to be inspected quarterly. Partially
open the Priming Test Valve, and then close the Priming
Test Valve when the priming level has been correctly es-
tablished (i.e., when water stops discharging from the
Priming Test Valve).
If no water discharges, close the Priming Test Valve and
replenish the Priming Level by performing Steps 1, 2, 3,
9, 11, 12, and 14 in the Valve Setting Procedure section.
ORDERING PROCEDURE
Please Specify:
1. 6 Inch (DN150) Model A-1 Dry Pipe Valve
Flange x Groove (#1098)
2. Model A-1 Dry Pipe Valve Trim
For 4 and 6 Inch Model A-1 Dry Pipe Valves (#1210)
Separately Ordered Items:
1. Waterflow Pressure Alarm Switch
2. Air Maintenance Device:
Model S460 Pressure Reducing Type (#1612), or
Model S465 Compressor Control Type (#1613)
Optional:
1. Model S430 Dry Pipe Valve Accelerator (#1306)
2. Model S430 Dry Pipe Valve Accelerator Trim
For 4 and 6 Inch Model A-1 Dry Pipe Valves (#1306-01)
3. Model S450 Water Motor Alarm (#5405)
4. Low Pressure Alarm Switch
Refer to Price List for for complete listing of Part
Numbers with respect to trim finish, replacement parts,
etc.
AVAILABILITY AND SERVICE
Star Sprinkler Inc. products and devices are available
worldwide through a network of independent distributors.
Please contact Star Sprinkler Inc. for information and the
name and address of the Star distributor in your area.
LIMITED WARRANTY
Seller warrants for a period of one year from date of ship-
ment (warranty period) that the products furnished here-
under will be free of defects in material and workmanship.
For further details on Warranty, contact Star Sprinkler Inc.
STAR SPRINKLER INC.
Page 8
2-2.1.41
7071 S. 13th Street • Suite 103
Oak Creek, WI 53154
414-570-5000 • 800-558-5236
PRINTED IN U.S.A. 2-00
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