FireFlex TOTALPAC2 - Page 4

Page 4 of 8
TOTALPAC
2
® Integrated Fire Protection System
Air Supply
FM-072G-0-06 G
- Ball check to prevent back flow.
- Restriction 1/16" (1,59mm) to prevent rapid re-
pressurization of a system.
The Viking Model D-2 APMD (E5) regulates and restricts air
flow.
- The air or nitrogen supply provided to the APMD must be
continuous, clean, dry and oil free.
- By-pass piping is provided to allow initial pressurization of
system piping more rapidly than the restricted air flow
through the APMD will allow.
- Determine the appropriate pressure to be maintained in
the system. Refer to System Data and Technical Data for
the system and components used.
- If adjustment is necessary, refer to paragraph 3.6 TO
ADJUST SYSTEM AIR PRESSURE.
The APMD (E5) should be checked for correct pressure
regulation after installation or repair by noting the air
pressure reading within the system. If adjustment is
required, refer to paragraph 3.6, TO ADJUST SYSTEM AIR
PRESSURE. The filter should also be inspected and
replaced or cleaned as required.
To clean Air Pressure Maintenance Device (APMD) (E5) in
Air option B (refer to Figure 2):
- Do not disconnect or disassemble the APMD without
closing the outlet (E7) and inlet (E6) isolation valves.
- System air pressure will be trapped between the outlet of
the APMD and the downstream control valve. Relieve
pressure before proceeding with disassembly.
- This procedure requires turning OFF the compressor's
power. Follow instructions "To close Air Supply" above.
- Carefully loosen the union between the outlet of APMD
(E5) and the outlet isolation valve (E7) to relieve
pressure.
- Remove and clean Air Pressure Maintenance Device
(APMD) filter. Refer to VIKING Technical Data Sheet
127a & b Model D-2 Air Pressure Maintenance Device for
more details. If admission filter is blocked, replace with
filter kit (part # 03007 A).
Refer to Viking Data Sheet 127a & b for additional details.
To close the Air Supply:
Close Air Pressure Maintenance Device (APMD) output
isolation valve (E7) by placing handle crossways to the
valve body. Make sure the APMD input valve (E6) is
open (handle in line with valve body), and the bypass
valve (E8) is closed (handle crossways to valve body).
Refer to Figure 2 or 3.
 Air option "D":
- The air or nitrogen supply provided must be continuous,
clean, dry and oil free.
- Determine the appropriate pressure to be maintained in
the system. Refer to System Data and Technical Data for
the system and components used.
Important
: Advise local authorities of the necessary work
over the fire protection equipment. In order to avoid
accidental water release, it is considered good practice to
completely close the main water inlet valve while doing
maintenance work.
Warning
! Air compressor head and copper tubing may be
relatively hot after the air compressor has run for some
time. Take precautions when handling the components to
avoid skin burns.