1
Installation Manual
MST
MANUAL SINGLE TANK FLUSH SELECTOR
SAFETY Before attempting to install a Hale FoamMaster MST, read all
of the following safety precautions and follow carefully.
1. WARNING: Do not supply flushing
water at pressures higher than the
maximum recommended pressure.
[500 PSI (34 BAR)]
2. WARNING: Always disconnect the
power source before attempting to
service any part of the system.
3. WARNING: Release all pressure
within the system before servicing
any of its components.
4. WARNING: Drain all concentrate and
water from the system before
servicing any of its component parts.
5. WARNING: Check all hoses for weak
or worn conditions after each use.
Ensure that all connections and
fittings are tight and secure.
6. WARNING: Use only pipe, hose, and
fittings from the foam pump outlet to
the injector fitting, which are rated at
or above the maximum pressure [500
PSI (34 BAR) minimum] rating at
which the water pump system
operates.
7. WARNING: Any electrical system has
the potential to cause sparks during
service. Take care to eliminate
explosive or hazardous environments
during service/repair.
8. CAUTION: Periodically inspect the
pump and the system components.
9. CAUTION: Read and understand
these installation instructions before
proceeding with the equipment
installation.
10.CAUTION: The foam tank low level
sensor must be utilized to protect the
foam pump from dry running. Failure
to do so will void warranty.
11.CAUTION: The Hale FoamMaster MST
flush selector is not recommended for
use on top mount pump panels due
to gravity feed from foam tank to
foam pump requirement.
12.CAUTION: When selecting fittings
make sure they are compatible with
all foam concentrates that will be
used. Some stainless steel fittings are
not compatible with some Class B
foam concentrates.
13.CAUTION: DO NOT connect the
drain from the Hale FoamMaster MST
to the apparatus multi drain system
or do not tee onto single drain.
Individual drain valves are
recommended for foam system
drains. If a multiple drain must be
used Hale recommends the use of a
Hale DV7 multiple drain valve (Hale
P/N 529-5420-00-0) or equivalent that
isolates each drain port.
14.CAUTION: The Hale FoamMaster MST
flush selector handle must be in the
FOAM TANK position. If the Hale
FoamMaster MST flush selector
handle is in the FLUSH position when
the Hale FoamMaster foam pump is
started the foam pump will only run
for 20 seconds and shut down.
15.CAUTION: When shutting down the
apparatus leave the Hale
FoamMaster MST flush selector
handle in the FOAM TANK position.
