Daily Checks; Monthly Checks; Annual Checks - EBARA DL3FU Operating Instructions, Installation & Maintenance Manual

EBARA Submersible Sewage Pumps
DL3FU / DL3MFU / DL3KFU / DL3KMFU / DDL3FU / DV3FU/ DML3FU
Operating, Installation, and Maintenance
INSTRUCTION MANUAL
6. Maintenance & Service
While the life of the pump depends largely on the ambient conditions, daily servicing and
inspection helps extend service life considerably. To achieve that, carry out the maintenance
as follows:

6.1 Daily Checks

Check the following items at least once a week.
(4) Current
If the ammeter reading exceeds the motor rating listed on the data plate or is
abnormally lower than usual, it is an indication of a problem.
(5) Voltage
Voltage should be within ± 10% of the rated value throughout operation.
(6) Vibration
Check for the abnormal vibrations and noise.
(7) Protective devices
Check protective devices by reading the panel indicator.

6.2 Monthly Checks

Check the following items at least once a month.
(1) Discharge pressure
Check pump discharge pressure and discharge flow rate (if flow meter is provided).
(2) Insulation resistance
Operation is safe as long as insulation resistance is more than 1MΩ.If the insulation
resistance is still higher than 1MΩ but there is a sharp decline from a certain value,
check the cables and/or overhaul is required.

6.3 Annual Checks

Even if there is nothing wrong with the pump under normal service condition, it should be lifted
out and inspected at least once a year.
Particularly, when the pump is in use under severe conditions, such as where the liquid being
handled contains sand or is corrosive, or oversized debris is pumped, inspect it as often as
circumstances allow.
A recommended procedure for the inspection is outlined below. If the mechanical seal must be
replaced or an overhaul is necessary as a result of the inspection, contact the nearest dealer,
or EBARA directly.
WARNING: BEFORE PULLING THE PUMP, DISCONNECT MOTOR CABLE AND
!
ENSURE THAT THE PUMP IS ISOLATED FROM THE POWER SUPPLY.
WARNING: ALWAYS LIFT THE PUMP BY THE LIFTING LUGS, NEVER BY THE
!
MOTOR CABLE.
EBARA
PUMPS AMERICAS CORPORATION
PM32U
www.pumpsebara.com
(t) 803.327.5005 (f) 803.327.5097
P.20
21
rev. 01/21