ΙΙ
-39
ROTARY GEAR PUMP
ELECTRONIC FOAM PROPORTIONING SYSTEM
Section
ΙΙ
ΙΙΙΙ
ΙΙ
ΙΙ
: Installation
tube fitting with sensor attached to the
end of the tube. Tighten the ½ tube
compression nut.
5) Install a new
5
/
8
compression
ferrule on the end of the tube. Carefully
thread the sensor wire through the
3
/
8
FNPT x
5
/
8
tube fitting and strain relief
gland. Attach the
3
/
8
FNPT x
5
/
8
tube
fitting and strain relief to the end of the
tube. Tighten the
5
/
8
tube compression
nut.
6) Slide the flange to the top of the
5/8 inch diameter tube and adjust the
telescoping section until the desired
length is achieved as measured from
the bottom of the flange to the bottom
of the sensor. Tighten the compression
fittings on the union to lock length.
CAUTION:
Use mounting hardware that
is compatible with all foam
concentrates to be used in the system.
Use washers, lockwashers and
capscrews made of brass or 300 series
stainless steel.
d. Insert sensor assembly through the
1.31 inch (33 mm) hole and align the
screw holes on the flange and gasket
with the holes on the tank. Secure the
assembly in place using four ¼-20 UNC x
1 inch long cap screws, ¼ inch washers
and ¼ inch lockwashers.
e. Make final adjustment to the sensor
position by pulling the tubing sections up
through the flange until sensor is 1-½ to 2
inches (38 to 51 mm) from the bottom of
the tank. Tighten the 5/8 tube
compression nut on the flange.
f.
Close strain relief to the 90
0
position
making sure it snaps shut. Tighten strain
relief gland nut to seal out water and
contamination.
LOW LEVEL SENSOR WIRING
CAUTION:
When extending the low tank
sensor wires make sure the splices are
properly sealed using an adhesive filled
heat shrink tubing.
SINGLE FOAM TANK SYSTEM
When a single foam tank system is installed
use minimum 16 AWG Type SXL or GXL (SAE
J1128) wire to extend the low tank sensor
wire to allow connection to the 2-wire
Packard WeatherPack connector on the
distribution box (see figure 2-24). Low tank
level sensors are not polarity sensitive
therefore terminal connections are not
specific.
If necessary, when making splices to extend
the low tank sensor wires make sure the
splices are sealed using an adhesive filled
heat shrink tubing. Where two wires exit the
heat shrink tubing pinch the tubing while
heating the tubing to make sure the
adhesive seals around both wires.
A connector kit (Hale P/N 546-1780-00-0) is
included that contains a Packard
Weatherpack 2-contact shroud half, two (2)
14-16 gage male terminals and two (2) 14-
16 gage cable seals. Assemble these
components to the end of the low tank
sensor wires. Snap the two halves of the
Packard WeatherPack connector together
making sure they are sealed.
DUAL FOAM TANK SYSTEM
When the Hale FoamMaster system is
installed using a Hale ADT or Hale MDT
ΙΙ
connect the low tank level sensors using the
following procedure (refer to figure 2-31):
CAUTION:
Before running wires from the
low tank switches to the A-B switch box
make sure the wire from Tank A is
identified and properly labeled.
1. Using minimum 16 AWG Type SXL or
GXL (SAE J1128) wire, extend the pigtails
on the low tank level sensors to the A-B
switch box. When making splices to
extend the low tank sensor wires make
sure the splices are sealed using an
adhesive filled heat shrink tubing. Where
