Hale Master Intake Valve - Manual (Page 16)

14
M
ASTER
I
NTAKE
V
ALVE
2. Connect the wiring harness from the
panel placard to the wiring harness from
the gearbox adapter. The Packard
WeatherPack end connectors are keyed
and will only assemble one way.
3. Connect +12 VDC power to the RED
pigtail provided using 14 AWG type SXL
or GXL (SAE J1128) wire. Make sure the
power supply is capable of providing 12
VDC power at 10 AMPS. Connect the
end of the BLACK wire to a ground point
on the chassis frame. Make sure the
wires are routed away from sources of
heat and avoid sharp edges. Make sure
all wires are protected with loom and
connections are sealed to protect them
from the under truck environment.
4. If required a handwheel extension is
provided in the installation kit. This
extension is used when truck panel
widths exceed 74 inch (1880 mm). The
extension is made to mount in one of
two positions.
a. The first position is for 81 inch (2060
mm) truck panel widths. The extension is
pushed on until the first hole in the
extension lines up with the hole in the
gearbox handwheel shaft.
b. The second position is for 76 inch
(1930 mm) truck panel widths. The
extension is pushed on all the way until
the second hole in the extension lines up
with the hole in the gearbox handwheel
shaft.
c. Two groove pins are provided in the
installation kit. On 81 inch panel widths
both groove pins are used. While on 76
inch panel widths only one pin is used.
5. Once pump operator panel is closed
install valve handwheel for manual
operator.
WARNING: Keep hands and arms clear
of the valve disc when valve is being
operated without suction tube strainer or
suction tube in place.
6. Lubricate the valve bore and disc edges
using Sunoco Ultra Prestige 2EP grease
or equal. Cycle the valve to check for
smooth operation.
7. Hydrostatically test the fire pump and
valve in accordance with accepted
procedures.
H. RELIEF VALVE ADJUSTMENT
WARNING: Never set intake relief valve
above hose manufacturers rated
pressure. Always use the lowest possible
relief valve setting to enhance operator
and equipment safety.
WARNING: Per NFPA 1962 requirements,
large diameter hose marked “SUPPLY
HOSE” 3-½ to 5 inches (89 to 127 mm)
diameter shall not be used at operating
pressures exceeding 185 PSI (13 BAR).
WARNING: Per NFPA 1962 requirements,
large diameter hose marked “SUPPLY
HOSE” 6 inches (152 mm) diameter shall
not be used at operating pressures
exceeding 135 PSI (9 BAR).
The relief valve is factory set to open at 125
PSI (9 BAR). The relief valve can be
adjusted to open from 75 to 250 PSI (5 to 17
BAR). Test and set relief valve as necessary
using the following procedures and figure 5:
1. Open operator panel and gain access
to the relief valve adjustment cap screw.
2. Make sure Master Intake Valve is closed
and install a pressure test cap on the
suction tube.
3. Connect a pressurized water source or
hydrostatic test pump and water supply
to the pressure test cap fitting.