primer or a hand operated diaphragm priming pump.
Exhaust Primer
The exhaust primer utilizes engine exhaust gases directed through a
venturi to create a vacuum and draw air out of the suction line and pump
casing.
The exhaust primer is capable of priming a pump with a maximum priming
lift of 19 feet (5.79 meters). If the pump does not prime in a reasonable
length of time, check the suction line for leaks.
To prime the pump with the exhaust primer:
Close the exhaust primer handle (C4) and open ball valve (B32)
in pump suction vacuum line.
NOTE: It may be required to apply a coating of grease/lubricant on the
outer portion of the valve cap (C3) for a better seal to reduce priming time
Start the engine according to engine manufacturer instructions.
Operate the engine at maximum throttle speed and allow primer
to remove air from suction until liquid flows from primer ejector
(C7).
When the pump is fully primed, close the vacuum line valve and
release the exhaust primer handle.
Hand Primer
The hand primer is a positive displacement diaphragm pump. Hand priming
pump is mounted directly to roll frame on a bracket (A37) that includes a
pocket to hold the primer handle (C27). Priming relies on the operator
manually stroking the handle to remove the air from the suction line and
pump casing.
To prime the pump with the hand primer:
Remove priming pump handle from bracket and install in
priming pump.
Open ball valve (B32) in pump suction vacuum line.
Operate pump handle up and down until pump casing is full of
liquid and water starts to enter the priming pump.
When the pump is fully primed, close the vacuum line valve.
Start the engine according to engine manufacturer’s
instructions.
Once fully primed, reduce engine speed slightly and slowly open the
discharge throttling valve. The discharge line should be filled slowly to
prevent damage to the piping, hose or gaskets. When the discharge line is
completely filled, adjust the discharge throttling valve and engine speed
until desired operating point is reached.
Leakage
No leakage should be visible at pump mating surfaces or at pump
connections or fittings. Keep all line connections and fittings tight to
maintain maximum pump efficiency.
Liquid Temperature and Overheating
The maximum liquid temperature for the pump is 180°F (82°C). Do not
apply it at a higher operating temperature than is recommended.
Overheating can occur if operated with a closed valve in the discharge
(valves should not be installed in suction line). Operating against a closed
valve could bring the liquid to a boil, build pressure and cause the pump to
rupture or explode. If overheating occurs, stop the pump and allow it to
completely cool before servicing it. Refill the pump casing with cool liquid.
Do not remove plates, covers, gauges, pipe plugs, or fittings from an
overheated pump. Vapor pressure within the pump can cause parts
being disengaged to be ejected with great force. Allow the pump to
completely cool before servicing.
Strainer Check
Check the suction strainer regularly, and clean it as necessary. The
strainer should also be checked if pump flow rate begins to drop. If a
suction vacuum gauge has been installed, monitor and record the readings
regularly to detect strainer blockage. Vacuum reading will increase, at a
given flow rate, if strainer becomes blocked.
Never introduce air, steam, or high water pressure into the casing to
remove blockage in suction line or strainer. This could result in personal
injury or damage to the equipment.
Stopping
Never halt the flow of liquid suddenly. If the liquid being pumped is stopped
abruptly, damaging shock waves can be transmitted to the pump and
piping system. Close all valves slowly.
If the application involves a high static discharge head, gradually close the
discharge throttling valve before stopping the pump. The pump discharge
check valve may be damaged if liquid in the discharge piping suddenly
reverses direction when the engine is stopped.
Cold Weather Preservation
In below freezing conditions completely drain the pump and piping system
to prevent damage from freezing. If the pump will sit idle for more than a
few hours remove the casing and make certain all liquid has been drained.
Clean any solids from casing.
MAINTENANCE
Preventative Maintenance
Since pump applications are seldom identical and pump wear is directly
affected by such things as the abrasive qualities, pressure and temperature
of the liquid being pumped, this section is intended only to provide general
recommendations and practices for preventive maintenance. Regardless of
the application, following a routine preventive maintenance schedule will
help assure trouble free performance and long life from your pump.
Record keeping is an essential component of a good preventive
maintenance program. Changes in suction and discharge gauge readings
(if so equipped) between regularly scheduled inspections can indicate
problems that can be corrected before system damage or catastrophic
failure occurs. The appearance of wearing parts should also be
documented at each inspection for comparison as well. Also, if records
indicate that a certain part (such as the shaft seal) fails at approximately
the same duty cycle, the part can be checked and replaced before failure
occurs, reducing the unscheduled down time. For new applications, a first
inspection of wearing parts at 250 hours will give insight into the wear rate
for your particular application. Subsequent inspections should be
performed at regular intervals. Critical applications should be inspected
more frequently.
General condition (temperature, unusual noises or vibrations,
cracks, leaks, loose hardware, etc)…DAILY
Pump performance (gauges, speed, flow)…DAILY
Impeller wear rings (excessive wear, poor performance)...SEMI-
ANNUALLY
Mechanical shaft seal (excessive wear, heat damage, leakage,
etc)…SEMI-ANNUALLY
Discharge check valve/gasket (excessive wear)…SEMI-
ANNUALLY
Engine lubrication – See Engine Manufacturer’s Service
Manual.
Inspect, clean, and replace components as needed.
PUMP/SEAL DISASSEMBLY & REASSEMBLY
Review all SAFETY information provided in this manual and
pump General Safety Manual.
Follow the instructions on all tags, labels, and decals attached to
the pump.
This pump requires little service. However, if it becomes necessary to
inspect or replace the wearing parts, follow these instructions which are
keyed to repair part lists and repair part explosions.
This manual will alert personnel to known procedures that require special
attention, could damage equipment and could be dangerous to personnel.
However, this manual cannot possibly anticipate and provide detailed
precautions for every situation that might occur during maintenance of the
unit. Therefore, it is the responsibility of the owner/maintenance personnel
to ensure that only safe, established shop procedures are used and that
any procedures not addressed in this manual are performed only after
