IV
-12
ROTARY GEAR PUMP
ELECTRONIC FOAM PROPORTIONING SYSTEM
Section
IV
: Operation
TANK SELECTION WITH DUAL TANK
SYSTEM
The following procedures are provided for
operation of the Hale FoamMaster system
with a Hale ADT or Hale MDT
ΙΙ
Selector
installed.
CAUTION:
Unless engaged in Class B
foam operations, the Hale FoamMaster
ADT toggle switch or Hale FoamMaster
MDT
ΙΙ
selector handle must be in the
TANK A
position. If the toggle switch or
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.
1. Make sure the Hale FoamMaster is
operating and foam solution is being
discharged.
2. Flip the Hale ADT toggle switch down or
turn the Hale FoamMaster MDT
ΙΙ
handle
until the indicator points toward the desired
tank (See figure 4-10). When changing
toggle switch or selector handle position,
move smoothly from the
TANK A
position
through the
FLUSH
position to
TANK B
position in one motion without stopping.
With the fire pump discharging water and
the Hale FoamMaster operating, a small
volume of water will be provided to
separate the two foam types helping to
prevent possible reactions.
SELECTOR SHOWN
IN FLUSH POSITION
SELECTOR SHOWN IN
TANK B POSITION
SELECTOR SHOWN IN
TANK A POSITION
(NORMAL OPERATING
POSITION)
VALVE
POSITION
INDICATOR
SELECTOR
HANDLE
Figure 4-10. Dual Tank Selector Operating Positions
HALE FOAMMASTER MDT
ΙΙ
TOGGLE SWITCH
SHOWN IN FLUSH
POSITION
TOGGLE SWITCH
SHOWN IN TANK B
POSITION
TOGGLE SWITCH SHOWN
IN TANK A POSITION
(NORMAL OPERATING
POSITION)
TANK A
INDICATOR
LIGHT
(GREEN)
TOGGLE
SWITCH
HALE FOAMMASTER ADT PLACARD
TANK B
INDICATOR
LIGHT
(RED)
