701-C00 Page 8/16
TRUCK MOUNTED PUMPS - INSTALLATION AND OPERATION
1. Install pressure gauges in the 1/4" NPT ports located on
the pump casing. These can be used to check the actual
inlet and discharge conditions after pump start-up.
2. Check the alignment of the pipes to the pump. Pipes
must be supported so that they do not spring away or drop
down when the pump flanges or union joints are
disconnected.
3. Secure appropriate hose connections.
STARTUP PROCEDURES
NOTICE:
Consult the "Troubleshooting" section of this manual if
difficulties during start up are experienced.
Pumps operating against a closed valve
can cause system failure, personal
injury and property damage
Hazardous pressure
can cause personal
injury or property
damage
1. Open the shut-off valve in the bypass return line.
2. If the tank outlet valve is:
a.
Lever Operated
- Pull the control knob all the way
out. Manually check the lever under the truck to see
that it is in the completely OPEN position.
b.
Discharge Pressure Operated
- Keep the discharge
line valve closed. When pump is started, it will build up
enough pressure to open the tank outlet valve. NOTE:
This type of valve usually requires approximately 20
PSI (1.4 bar) differential pressure to open and
approximately 15 PSI (1.0 bar) differential pressure to
keep it open. If the piping is quite large, it may be
necessary to restrict the discharge line shut-off valve
in order to maintain sufficient pressure to keep the
tank outlet valve open.
3. Start the pump. Confirm proper pump rotation by checking
the pump rotation arrows.
4. Check the pump speed. Pump speed must never exceed
the recommended maximum. See “Technical Data” section
of this manual.
5. Check the pressure gauges to ensure the system is
operating within expected parameters. Record the gauge
readings in the "Initial Start Up Information" section of this
manual for future reference.
6. Inspect piping, fittings, and associated system equipment
for leaks, noise, vibration and overheating.
7. Check the flow rate to ensure the pump is operating within
the expected parameters. Record the flow rate in the “Initial
Start Up Information” section of this manual for future
reference.
8. Close the discharge valve and check the differential
pressure across the pump. It must not exceed the pressure
setting of the external bypass valve.
PRE-STARTUP CHECK LIST
9.
With the discharge valve still closed, momentarily close the
manual shut-off valve in the bypass return line to check the
internal pump relief valve. The differential pressure should
be about 100 PSI (6.9 bar).
10. The external bypass valve must always be set at least 25
PSI (1.7 bar) lower than the pump internal relief valve.
NOTE: The normal operating pressure must be at least 5 -
15 PSI (0.3 - 1.0 bar) less than the external bypass valve
setting. Pump speeds which result in higher pressures
(nearing the valve setting) forces the liquid to be
recirculated, creating excessive wear on the pump and
equipment.
PUMP SPEED
PTO and hydraulically driven units MUST contain speed
control devices to prevent pump speeds above the maximum
RPM specifications, regardless of the truck engine unloading
speeds. Should fluid delivery be appreciably less than
expected, see the "Troubleshooting" section.
Содержание CRL4B
Страница 15: ...701 C00 Page 15 16 NOTES...