EBARA CGUII, CGFU - Manual (Page 9)

EBARA Submersible Grinder Pumps DGUII/DGFU
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com 9
(t) 803 327-5005 • (f) 803 327-5097 rev. 11/05
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 oil, inject turbine oil No. 32 (ISO VG-32) until it overflows (Fig. 5). Be certain to dispose of oil
residue properly.
Above replacement schedule is based on normal operating conditions.
HP
2
3
5
Oil
41 ozs
43 ozs
43 ozs
Table 1
(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.
Mechanical Seal
Whenever oil in
mechanical seal
chamber is clouded
Annually
Oil filler plug gasket
Whenever oil is
replaced or inspected
Annually
Lubricating oil
Whenever clouded
or dirty
Annually
O-ring
Whenever pump is
overhauled
Annually
Replaceable part
Replacement guide
Frequency
Maintenance and Service