MARLO MATD 9500 XT, Руководство пользователя

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•
Turn on the power to the pump. The green LED (not available on all models)
will light up and flash off each time the pump strokes.
•
Adjust the stroke rate knob to the 100% setting mark (for more information
see Section 5.3, Capacity Control).
•
Adjust the stroke length knob to the 100% setting mark if applicable (for more
information see Section 5.3, Capacity Controls).
•
If the discharge line is connected directly to a pressurized system it should
be temporarily bypassed during priming of the pump. A bleed valve will
simplify this operation by allowing easy bypass of the discharge fluid. Air
must be purged from the pumphead before the pump will operate against
pressure. (See Figure 9)
Air Bleed Operation:
•
While pump is running, turn adjustment knob
counterclockwise.
• Run with valve open until a solid stream of fluid
comes out of the bypass tubing with no air
bubbles.
• Close air bleed valve by turning adjustment
screw clockwise.
•
Chemical should reach the pump head after a few minutes of operation. If
not, remove the discharge fitting and moisten the discharge valve area (ball
check and valve seats) with a few drops of
chemical being fed to the metering
pump. For safety, always use protective clothing and gloves, wear safety
glasses and use a proper container to hold the chemical.
•
If the pump continues not to prime, refer to Section 7.0, Troubleshooting, of
these instructions.
•
Once the pump has been primed and is pumping the chemical through the
head, turn off the power, reconnect the discharge tubing (if it had been
removed) and immediately clean any spilled chemical that is on the pump
housing or head.
•
Turn the power on once more and adjust the pump flow to the desired rate
(see Section 5.3.3, Controlling Procedure).
•
Always check the calibration of the pump after start-up. It’s best to calibrate
the pump under your typical use conditions.
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5.3 CAPACITY CONTROL
Capacity can be controlled by means of the stroke length adjusting knob and/or
stroke rate adjusting knob (except model C pumps). Control knobs provide coarse
adjustment; use a calibration column for accurate calibration. Contact your pump
supplier for proper calibration equipment.
5.3.1 Stroke Frequency Adjustment (E, E-DC, E Plus, A Plus & C Plus only)
• Stroke frequency can be controlled
from 10 to 100% (12 to 125 strokes per
minute) by means of the electronic
circuit.
• Stroke frequency can be set by means
of the stroke rate adjusting knob even
while the pump is in operation. (See
Figure 10)
5.3.2 Stroke Length Adjustment
• Stroke length can be controlled within
0 to 100% of the diaphragm displace-
ment. It should be controlled within 20
to 100% for practical use.
• Stroke length can be set by means of
the stroke length adjusting knob while
the pump is in operation.
Do not turn
the knob while the pump is stopped.
5.3.3 Controlling Procedure
Proper set points for stoke length and stroke frequency should be determined
after consideration of the pump and characteristics of the fluid. The following
procedure is recommended from the viewpoint of pump performance.
Note:
The closer the stroke length is to 100%, the better the pump performance
will be.
• Set the stroke length to 100% then adjust the stroke frequency for
coarse capacity control.
• Measure the capacity.
• When the measured capacity is less than the required value,
increase the stroke frequency and measure the capacity again.
• Then, adjust the stroke length for fine capacity control.
• Finally, measure the capacity and make sure that the required value
is obtained.
FIGURE 9
FIGURE 10