Operation
1.
Before starting the pump
1.
After completing installation, measure the insulation resistance again as described in Installation.
2.
Check water level.
If the pump is operated continuously for an extended period of time in a dry condition or at the lowest water
level, the motor protector will be shut off the power. Constant operating in above condition will shorten pump
life time. Do not start the pump again in such a situation before the motor has completely cooled.
2.
Test operation….
(1)
Turn the operating switch on and off a couple of times to check switch function.
For A Models
Floating switch must be raised for the pump to start.
(2)
Next, check direction of rotation. If discharge volume is low or unusual sounds are heard when the pump is
operating, rotation direction is reversed. When this happens, reverse two of the wires.
Maintenance
Check pressure, output, voltage, current and other specifications. Unusual readings may indicate. Refer to
Troubleshooting and correct as soon as possible.
1.
Daily inspections
Check current and ammeter fluctuation daily. If ammeter fluctuation is great, even though within the limits of pump
rating, foreign matter may be clogged the pump. If the volume of liquid discharged falls suddenly, foreign matter
may be blocked the suction inlet.
2.
Regular inspections
Monthly inspections
Measure the insulation resistance. The value should be more than 1M ohm. If resistance starts to fall rapidly
even with an initial indication of over 1M ohm, this may be an indication of trouble and repair work is required.
Annual inspections
To prolong the service life of the mechanical seal by replacing the oil in the mechanical seal chamber once a
year. Water mixed the oil or cloudy textures are indications of a defective mechanical seal requiring
replacement. When replacing the oil, lay the pump on its side with filler plug on top. Fill suitable amount turbine
oil No.32 (ISO VG-32).
Inspections at 3-5year intervals
Conduct an overhaul of the pump. These intervals will help to avoid possible failure in future.
3.
Parts need to be replaced
Replace the appropriate part when the following conditions appear.
Replaceable part
Mechanical seal
Oil filler plug gasket
Lubricating oil
O-ring
Condition
Oil in mechanical
seal chamber
Inspect or replace
the oil
Oil is clouded or
dirty
Overhaul the pump
Frequency Annual Half a year Half a year Annual
Note: Above replacement schedule is based on normal operating conditions.
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