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TFP1221
Page 2 of 4
2"
(50,8 mm)
3-1/4"
(82,6 mm)
8-1/2"
(215,9 mm)
Setting
Procedure
The TYCO Model AMD-1 Automatic
Air Maintenance Device must be
set in accordance with the following
instructions:
1. Determine the pressure that meets
the minimum requirements of the
system to pressurize.
2. Close the Model AMD-1 By-Pass
Valve, and close the Model AMD-1
Air Supply Control Valve.
3. Open the control valve in the air
supply trim of the system to pres-
surize and then reduce the system
air pressure to 0 psi.
4. Close the control valve in the
air supply trim of the system to
pressurize.
5. Remove the system pressure gauge
from its connection and temporari-
ly install it in the 1/4 in. NPT Model
AMD-1 Gauge Test Port.
CAUTION
Before removing the plug, make certain
that the piping to which the Model
AMD-1 Gauge Test Port is connected
is at 0 psi. Failure to do so may result
in personal injury or property damage.
1/4" NPT
GAUGE
TEST PORT
1/2" NPT
OUTLET
CONNECTION
(TO SYSTEM)
LABEL
RESTRICTOR
CHECK VALVE
P/N 92-326-1-003
REGULATOR
(ADJUSTABLE)
P/N 92-324-1-012
MODEL AMD-1
AUTOMATIC AIR MAINTENANCE DEVICE
6. Open the Air Supply Control Valve
in the Model AMD-1 Device.
7. While observing the relocated pres-
sure gauge, adjust the output pres-
sure of the Pressure Regulator. Pull
the knob out and away from the
Pressure Regulator body and then
slowly turn the knob clockwise, as
viewed from the knob end of the
Pressure Regulator, to increase
pressure, and counter-clockwise to
decrease pressure.
When decreasing pressure, the air
pressure must be relieved down-
stream of the Pressure Regulator
by temporarily opening the control
valve in the air supply trim of the
system to pressurize, assuming that
the system to pressurize is at 0 psi.
After the Pressure Regulator is set,
push the knob in and towards the
Pressure Regulator body to snap it
in a locked position.
8. Close the Air Supply Control Valve
in the Model AMD-1 Device.
9. Return the system air pressure
gauge to its normal location. Re-
install the 1/4 in. pipe plug in the
Model AMD-1 Gauge Test Port. Ap-
ply pipe-thread sealant sparingly to
the plug threads only.
CAUTION
Before removing the pressure gauge,
make certain that the piping to which
the Model AMD-1 Gauge Test Port is
connected is at 0 psi. Failure to do so
may result in personal injury or prop-
erty damage.
16-1/8""
(409,6 mm)
PRESSURE
STRAINER
P/N 52-353-1-002
FIGURE 1
BY-PASS VALVE
(NORMALLY
CLOSED)
P/N 46-047-1-004
1/2" NPT
INLET CONNECTION
(FROM COMPRESSED
AIR SUPPLY)
AIR SUPPLY
CONTROL VALVE
(NORMALLY OPEN)
P/N 46-048-1-002
10. Open the control valve in the
air supply trim to the system to
pressurize.
11. Open the Air Supply Control Valve
in the Model AMD-1 Device.
12. Open the By-Pass Valve in the
Model AMD-1 Device.
13. Close the By-Pass Valve after the
system is pressurized to approxi-
mately 5 psi (0,4 bar) less than the
minimum required system pressure
determined in Step 1.
14. After the system pressure stabi-
lizes, note the value and compare
with the requirement. Re-adjust the
Pressure Regulator, as required.
NOTICE
If the system was over-pressurized
during manual fill, open a suitable
connection to the system and manu-
ally reduce the pressure to the desired
value. The Model AMD-1 Automatic Air
Maintenance Device then automatically
maintains the preset system pressure.
The Restrictor Check Valve prevents
the Pressure Regulator from bleeding
down the system pressure.
In order to minimize the time for system
trip in the event of a sprinkler opera-
tion, set the system pressure at the
minimum required value.
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