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Series 8100/8150/8200/9100 Fire Pump
The exhaust pipe shall be covered with high-temperature
insulation or otherwise guarded to protect from personal
injury.
The exhaust pipe and muffler, if used, shall be suitable for the
use intended, and the exhaust back-pressure shall not
exceed the engine manufacturer's recommendations.
Exhaust pipes shall be installed with clearances of at least 9
inch [229mm] to combustible materials.
7.6.8
Pressure Gages
Properly sized pressure gages should be installed in both the
suction and discharge nozzles in the gauge taps provided.
The gauges will enable the operator to easily observe the
operation of the pump, and also determine if the pump is
operating in conformance with the performance curve.
7.6.9
Stuffing box lubrication
7.6.9.1 General guidelines
Contaminants in the pumped liquid must not enter the
stuffing box. These contaminants may cause severe
abrasion or corrosion of the shaft, or shaft sleeve, and rapid
packing deterioration; even plugging the stuffing box flushing
and lubrication system.
The stuffing box must be supplied at all times with a source
of clean, clear liquid to flush and lubricate the packing.
This is normally achieved with a supply from the pump
discharge volute to the stuffing box. A control valve may be
fitted into the supply line to control the pressure to the
stuffing box.
7.6.9.2 Packing
Pumps are normally packed before shipment. If the pump is
installed within 60 days after shipment, the packing will be in
good condition with a sufficient supply of lubrication.
If the pump is stored for a longer period, it may be necessary
to repack the stuffing box. In all cases, however, inspect the
packing before the pump is started.
It is important to establish the optimum flushing pressure that
will keep contaminants from the stuffing box cavity. If this
pressure is too low, fluid being pumped may enter the stuffing
box. If the pressure is too high, excessive packing wear may
result; and extreme heat may develop in the shaft causing
higher bearing temperatures.
The most desirable condition, therefore, is to apply seal water
at a flow rate of approximately 0.25 gpm [0.95 lpm] at a
pressure approximately 15-20 psig [1 bar] above the
maximum stuffing box pressure. [Approximately one [1] drop
per second.]
NOTE: Packing adjustment is covered in section 9,
Maintenance.
25
7.7
Final alignment
WARNING
Do not operate pump with coupling out of
alignment. Ensure final coupling alignment is
within the values according to the coupling
manufacturer's instructions. Coupling, pump,
or driver failure may occur. Failure to follow
these instructions could result in serious
personal injury.
After connecting piping to the pump, rotate the shaft several
times by hand to ensure that there is no binding and all parts
are free. Recheck the coupling alignment, as previously
described, to ensure that there is no pipe strain. Correct, if
necessary, by adjusting the motor only.
7.8
Electrical Connection
WARNING
Risk of electric shock. All electrical
connections shall be performed by a qualified
electrician in accordance with all applicable
codes, ordinances and good practices.
Failure to follow these instructions could
result in serious injury, death and/or property
damage.
WARNING
Risk of injury due to rotating parts. Isolate the
motor from its supply voltage and keep it locked
out when performing any work on the pump.
NOTICE
Follow the instructions of the motor
manufacturer.
NOTICE
Engine-driven pump units: The requirement for
the electrical connection of the engine unit is
covered in the engine manufacturer's
Installation Manual.
The operating voltage and frequency are marked on the
motor nameplate.
The motor must be suitable for the power supply at the
installation site.
The electrical connections should be carried out as shown
on the motor nameplate and/or the terminal box.
AC6102 Rev 05
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