Pump Solutions Group Neptune Solenoid-driven Diaphragm Metering Pump ARPZ-31_61_12 - Manual (Page 29)

28
Operation
10
SPEED(%)
0 100
90
20
P L
40
30
50 60
70
80
Discharge-volume setting
• The stroke speed can be adjusted by turning the stroke-speed adjustent dial located at the back of the pump.
Adjustable range of stroke speed: 15 to 300 strokes/min
✽ When the dial is moved while the pump is stopped, the dial setting may shift during pump operation. If this happens,
adjust the dial again.
(1) Operate the pump so that clean water or cleaning fluid is sucked in and discharged for about 30 minutes to
clean the inside of the pump head.
(2) Turn off the power completely.
(3) Place the cover over the pump to protect the pump from the build-up of dust and corrosive environments.
Procedure for prolonged shutdown of operation
Follow the steps below when shutting down the pump for a prolonged period.
To shut down the pump
(1) Check the inside of the tank for any sediment that may have accumulated, and check for signs of trouble such
as cloudy liquid. If the liquid quality has deteriorated, clean the inside of the tank, and replace all the existing
liquid with fresh chemical.
(2) Check the valve seat areas and check balls inside the joints for dirt and other foreign matter.
(3) Check the items in the section “Before operation” on page 25.
To resume operation
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