
MAX100/200-OPERATION Rev200813
76
13. MAINTENANCE & SERVICE REQUIREMENTS
Flushing Kit Maintenance/Service
Flushing Kit Installation and Controls
No matter which Foam Pro system is supplied on both vehicle or fixed foam system installations, a foam concentrate
“flushing” system shall be required. This system shall be furnished and installed by the final installer. Refer to the drawing
below that outlines the plumbing, control valve, pressure regulator, check valve, strainer, and connecting hose from the flush
kit to the intake-side of the foam pump piping.
The flushing of the foam system after each use is required. The water supply for “flush kit” shall be from the fire pump
discharge manifold. Flushing of the foam system from the auxiliary foam concentrate intake
IS NOT
recommended for
FireLion and Edwards foam pumps. On these intakes – warning labels on maximum of foam concentrate intake pressure and
a pressure gauge shall be installed next to the intake valve. (Note: these items are NOT REQUIRED on Trident foam pumps).
The final installer shall provide the flushing system which shall include the following components:
1. Check valve (0.75”/20mm in size) and connected to water manifold
2. Flush valve (0.75”/20mm in size) manually controlled on the operator’s panel.
Note: this valve shall be electrically
operated with a Foam Pro FOAM-AUX system.
3. Pressure regulator (0.75”/20mm in size) preset at 50 PSI/3BAR
4. Pin-line strainer (0.75”/20mm in size)
5.
A flexible hose line with female swivel NPT connections (0.750" / 20mm) shall be installed from the flush kit to the foam
pump intake piping, connecting BEFORE the main wye strainer.
WATER DISCHARGE
MANIFOLD
TO WATER DISCHARGES
FLEXIBLE HOSE
MANUALLY OPERATED
0.75" VALVE
THREADED
FEMALE NPT
CONNECT
TO FOAM PUMP
INTAKE PIPING
STRAINER
PRESSURE REGULATOR
PRESET PRESSURE
300 PSI / 20 BAR
IN LINE CHECK VALVE
FOAM
PUMP
0.75"
0.75"
0.75"
Flush Kit
Flushing Foam Pump and Foam Plumbing System
After using any foam system, it should be flushed with fresh, potable water. The following procedure can be used
for flushing the foam system:
1. Connect a potable water supply to the fire pump or the flush kit assembly inlet