TFP1100
Page 13 of 16
Setting
Procedure
(Dry Pipe
System)
The Dry Pipe System and the TYCO
Model QRS Electronic Accelerator
must be reset and restored to service
as soon as possible after an operation.
NOTICE
The system must be completely drained
before proceeding.
In the case of one panel serving mul-
tiple risers, whenever the Program
Switch is set to the PROGRAM posi-
tion (Steps 4 and 7), the QRS Electronic
Accelerators are taken out of service
for all connected system risers. There-
fore, the proper authorities and all per-
sonnel who may be affected must be
notified. In the event of a fire and where
a QRS Electronic Accelerator has been
taken out of service, an increased time
in water delivery can be expected.
Step 1.
Until the system is to be set
for service, the internal audible buzzer
may be silenced by momentarily press-
ing the BUZZER SILENCE button
(Figure 7).
Step 2.
Locate all of the system’s low
point drain valves to help facilitate
resetting the system.
Step 3.
Follow the resetting procedure
for the Dry Pipe Valve using the instruc-
tions provided in the Technical Data
Sheet for the Dry Pipe Valve. When
prompted to pressurize the system
piping with air, proceed with Step 4.
Step 4.
Momentarily press the SYSTEM
RESET button (Figure 7) and then set
the Program Switch to the PROGRAM
position. The display will read “OK to
charge system.” Begin applying air
pressure to the system.
At this point
the solenoid valve will be de-ener gized
and allowed to close to enable pressur-
ization of the system piping, and a 30
minute countdown to repres surize the
system will be displayed.
NOTICE
If within 30 minutes, the Program
Switch is not returned to the RUN
position during the upcoming Step 6,
the Releasing Panel will automatically
re vert to a normal condition. If at least 8
psi has not been reached, the solenoid
valve will be energized and open. If at
least the low air pressure threshold of
Table A has not been reached, a super-
visory condition will occur.
If more than 30 minutes is required, the
counter can be restarted before the 30
minutes has elapsed. In order to reset
the counter, the system must be pres-
surized to at least 8 psi, at which time
the Program Switch can be set to the
RUN position and then quickly back to
the PROGRAM position. A 30 minute
countdown will then be restarted.
Step 5.
When the system reaches an
air pressure of approximately 10 psi,
and while the system is in process of
reaching its intended pressure, “blow-
down” each drain valve one at a time,
including the low body drain or priming
level valve, at the dry pipe valve and
the Inspector’s Test Connection by
opening each drain valve until water
ceases to drain and then closing the
drain valve. The blow-down proce-
dure that will assure complete drain-
ing of the system will be more easily
ac complished with 10 psi air pressure
in the system.
Step 6.
When the system reaches the
intended pressure and the pressure is
stabilized, return the Program Switch
(Figure 7) to the RUN position.
Step 7.
After waiting at least 60
seconds, open the Inspector’s Test
Connection, wait 5 seconds, and then
close the Inspector’s Test Connection.
Verify that the time to Accelerator trip
is essentially the same as in previous
tests. A momentary burst of air from a
dry pipe valve’s Automatic Drain Valve
indicates that the QRS has tripped. In
addition, the display on the Operat-
ing Interface of the Releasing Panel
will indicate operation. This procedure
clears any scale and debris from the
pipe and nipples that are connected to
the solenoid valve.
Momentarily press the SYSTEM RESET
button and then set the Program Switch
to the PROGRAM position. The display
will read “OK to charge system”. At
this point, the solenoid valve will be
de-energized and allowed to close to
enable pressurization of the system
piping.
Allow the system to automatically
return to its intended pressure via its
automatic air supply, and, after waiting
for the pressure to stabilize, return the
Program Switch to the RUN position.
Step 8.
Partially open the Main Control
Valve. Slowly close the system’s Main
Drain Valve as soon as water dis-
charges from the drain connection.
Depress the plunger on the dry pipe
valve’s Automatic Drain Valve to make
sure that it is open and that no water
discharges. The absence of water dis-
charge from the Automatic Drain Valve
is an indication of a properly set water
seat within the dry pipe valve. If water
is discharging, refer to the Care and
Maintenance section of the Technical
Data Sheet for the dry pipe valve to
determine and correct the cause of the
leakage problem.
If there are no leaks, the system’s Main
Control Valve must be fully opened.
The system is now set for service.
NOTE:
After setting a fire protection
system, notify the proper authorities
and advise those responsible for moni-
toring proprietary and/or central station
alarms.
Setting
Procedure
(Preaction
System)
The Double Interlock Electric/Electric
Preaction System and the Model QRS
Electronic Accelerator must be reset
and restored to service as soon as pos-
sible after an operation.
Follow the Valve Setting Procedure
instructions provided in the Technical
Data Sheet TFP1450. When prompted
to reset the actuation system, momen-
tarily press the SYSTEM RESET button
(Figure 7), and assuming that the Zone
1 Alarm and Zone 2 Low Air Alarm
are clear, proceed with the remaining
instructions provided in Technical Data
Sheet TFP1450.
NOTE:
After setting a fire protec-
tion system, notify the proper authori-
ties and advise those responsible for
monitoring proprietary and/or central
station alarms.
