HALE MiniCAFS 2.1A Description, Installation And Operation Manual Download

Page: 51 / 102

Page

SmartFOAM

Align the indexing pin of the saddle clamp to the  index-
ing hole of the spacer to align the saddle  clamp mount.
Secure with four 1/2-in machine screws, no lock  wash-
ers. Torque to 8.5 in.-lbs. (1.0 N-m).

Align the paddle wheel indexing pin to the indexing hole
in the spacer and secure using four 3/4” screws and lock
washers. Torque to 7.5 in.-lbs. (0.9 N-m).

Apply a small amount of grease to the saddle clamp gas-
ket before the final installation of the assembly onto the
pipe. Firmly tighten the saddle clamp onto the pipe.

FOAM PUMP FLUSH SYSTEM

Dual Tank System

Flushing water must be provided to flush the system of
foam concentrate after each use. This prevents adverse
reactions of some foam concentrates should they mix to-
gether. The Hale ADT and MDT II each have provisions
for connecting flushing water to the foam concentrate in-
jection system. If 2 MDT II are required, each will need
its own flush line.

Single Tank System

The Hale MST provides a selector valve and gives the
system flush capabilities for NFPA compliance. A fitting
provided on the Hale MST simplifies the flushing water
connection.

No Tank Option

The system installer must provide a flushing water sup-
ply to comply with NFPA standards.
The flushing water hose must be a minimum of 1/2-in
(12 mm) inside diameter and capable of withstanding the
maximum fire pump discharge pressure, 500 PSI (34
BAR) minimum. The flush water supply should be pro-
vided from one of the pressure taps on the discharge of
the fire pump.

It is recommended that a check valve be installed at the
pressure tap to prevent contamination. Flush water
thread connections are:

❑

ADT - 1/2-in (13 mm) NPT

❑

MDT II and MST - 1/4” (6.4 mm) NPT

The system installer must provide proper fittings for
these connections.

FOAM CONCENTRATE PLUMBING

CAUTION!

MAKE SURE THE FOAM TANK AND FOAM CONCEN-
TRATE SUCTION HOSES ARE CLEAN BEFORE
MAKING A FINAL CONNECTION TO FOAM PUMP.
FLUSH TANK(S) AND HOSES PRIOR TO MAKING
CONNECTIONS. MAKE SURE THE FOAM CONCEN-
TRATE IS GRAVITY FED FROM THE TANK TO THE
PUMP.

Foam concentrate plumbing consists of:

❑

Foam concentrate suction hose

❑

Foam strainer

❑

Foam concentrate discharge hose

❑

Check valve/injector fitting

FOAM STRAINER CONNECTION

CAUTION!

THE FOAM CONCENTRATE STRAINER ASSEMBLY,
MOUNTED ON THE FOAM PUMP INLET, IS A  LOW
PRESSURE DEVICE. IT WILL NOT WITHSTAND
FLUSHING WATER PRESSURE. IF FLUSHING  WA-
TER IS TO BE PROVIDED THE PRESSURE MUST  BE
LIMITED TO 50 PSI (3.5 BAR).

The strainer/valve assembly has 1/2-in (12 mm) NPT  fe-
male threaded ports.  A 1/2-in hose barb fitting is sup-
plied to connect the 1/2-in ID hose, provided with  the
Hale SmartFOAM 2.1A installation kit.

The hose from the foam tank to the strainer must  have
adequate wall stiffness to withstand the  vacuum of the
foam pump while it is operating (23”  [584 mm] Hg and
50 PSI [3 BAR], Kuriyama, Kuri-tec K-3130 or K-7130
series or equal).

After the foam pump is mounted on the apparatus, con-
nect the PVC hose provided to the strainer inlet.

Install the clear plastic hose from the foam tank  outlet to
the inlet of the strainer/valve assembly.  The inlet is on
the valve end. Wetting the ends  of the hose and fittings
makes the installation on the hose fittings easier.

CAUTION!

MAKE SURE THE FOAM TANK AND FOAM CONCEN-
TRATE SUCTION HOSES ARE CLEAN BEFORE
MAKING FINAL CONNECTION TO FOAM PUMP. IF
NECESSARY FLUSH TANK AND HOSES PRIOR TO
MAKING CONNECTION.