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EBARA Submersible Sewage Pumps
Operating, Installation, and Maintenance
Maintenance and Service
Disconnect power cable from power source before servicing unit.
Normal maintenance should be done by qualified personnel.
Check pressure, output, voltage, current, vibration, and other specifications. Unusual readings may indicate a problem requiring
immediate service. Contact your local EBARA PUMPS AMERICAS CORPORATION representative as soon as possible.
1. Daily inspections:
(1) Check current and ammeter fluctuation daily. If ammeter fluctuation is great, even though within the limits of pump
rating, foreign matter may be clogging the pump. If the quantity of liquid discharged falls suddenly, foreign matter may
be blocking the suction inlet.
2. Regular inspections:
(1) Monthly inspections
Measure the insulation resistance. The value should be more than 1 mega ohm. If resistance starts to fall rapidly even
with an initial indication of over 1 mega ohm, this may be an indication of trouble and repair work is required.
(2) Every 6 months
Check the mechanical seal every six months. If you notice water
mixed with the oil or cloudy texture of the oil, these may be
indications of a defective mechanical seal requiring replacement.
The service life of the mechanical seal can be prolonged by
replacing the oil in the mechanical seal chamber once a year.
When replacing the oil, lay the pump on its side, with filler plug
on top as shown in Fig. 5.
(3) Preventive maintenance yearly
Conduct an overhaul of the pump annually. These intervals will reduce the possibility of future trouble.
3. Parts that will need to be replaced:
Replace the appropriate part when the following conditions are apparent.
Replaceable Part
Mechanical Seal
Whenever oil in
Replacement guide
mechanical seal
chamber is clouded
Frequency
Above replacement schedule is based on normal operating conditions.
EBARA Pumps Americas Corporation
www.pumpsebara.com
(t) 803 327-5005 • (f) 803 327-5097
Oil Capacities for DLU/DLMU pumps
HP
1
2
3
5
Table 1
Oil Filter plug gasket
Whenever oil is
replaced or
inspected
Annually
Annually
WARNING
Oil
21 ozs
31 ozs
42 ozs
47 ozs
Lubricating oil
Whenever clouded
or dirty
Annually
DLU / DLMU
Fig. 5
O-ring
Whenever pump
is overhauled
Annually
10
rev. 01/24
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