Johnson Controls tyco AMD-2 Manual page 2

TFP1231
Page 2 of 4
1/2" CONDUIT
OPENINGS
1/2" NPT OUTLET
CONNECTION
(TO SYSTEM)
4"
(101,6 mm)
Installation
The TYCO Model AMD-2 Automatic
Air Maintenance Device should be
installed in the horizontal position as
shown in Figure 1, as well as in accor-
dance with the following instructions.
NOTICE
Moisture build-up can adversely affect
performance. Suitable consideration
must be given to the removal of exces-
sive moisture from the compressed air
supply.
1. Make connections a minimum of
1/2 in. (DN15) pipe size between
the air compressor and the Model
AMD-2 Device, as well as between
the Model AMD-2 Device and the
system to pressurize.
2. If a moisture filter with integral
drain is not installed at the outlet
of the air com pressor, install a Drip
Leg in the air line between the Air
Compressor and the Model AMD-
2 Device as shown in Figure 2.
3. Place a 1/2 in. (DN15), non-spring
loaded, rubber-faced, swing-type
check valve between the Model
AMD-2 Device and the system to
pressurize. A check valve of this
type is provided in the air supply
trim of TYCO dry pipe valves, pre-
action valves, and dry pilot trim.
PRESSURE SWITCH
(WITH UNLOADER VALVE)
P/N 92-326-1-001
RESTRICTOR
CHECK VALVE
P/N 92-326-1-003
MODEL AMD-2
AUTOMATIC AIR MAINTENANCE DEVICE
4. Make conduit and electrical con-
nections to the Pressure Switch in
accordance with the requirements
of the authority having jurisdic-
tion and/or the National Electrical
Code. Refer to Figure 3 for identifi-
cation of the wiring terminals.
The Pressure Switch is wired
through two, 1/2 in. Conduit
Openings in the base of its enclo-
sure. The No. 8 screw terminals
accept up to No. 12 AWG wire.
Setting
Procedure
The TYCO Model AMD-2 Automatic
Air Maintenance Device must be
set in accordance with the following
instructions.
1. Open the By-Pass Valve in the
Model AMD-2 Device.
2. Open the control valve in the
air supply trim to the system to
pressurize.
3. To pressurize the system, apply
electrical power to the Pressure
Switch.
4. Close the By-Pass Valve after the
Pressure Switch cuts out. Note the
cut-out pressure.
BY-PASS VALVE
(NORMALLY CLOSED)
P/N 46-047-1-004
STRAINER
P/N 52-353-1-002
16-1/2"
(419,1 mm)
FIGURE 1
1/2" NPT INLET
CONNECTION
(FROM AIR
7"
COMPRESSOR)
(177,5 mm)
2-1/2"
(63,5 mm)
5. Open a connection to the system
slowly enough to reduce the air
pressure and close it immediately
after the Pressure Switch cuts in.
Verify that the cut-in pressure
meets the minimum requirements
of the system to pressurize, and
note the cut-out pressure.
If necessary, remove the cover
from the Pressure Switch and ad-
just the cut-in pressure adjustment
screw shown in Figure 3. The cut-
in pressure changes approximately
1.5 psi (0,1 bar) per half-turn of the
screw.
The cut-in pressure should be set
at the minimum required value, in
order to minimize the time to sys-
tem trip in the event of a sprinkler
operation.
6. Repeat Step 5 if the cut-in pres-
sure required adjustment. Note
both the cut-in and cut-out pres-
sures for future reference.
12-1/2"
(317,5 mm)