EBARA DML - Precautions During Stop-Operation; When Motor Protection is Activated; Consumables

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EBARA
Corporation
3) Once a year
Replace mechanical seal at an interval of one year or 6000 hours of total operating hours, either
shorter one. By the replacement, the pump life extends.
4) Once every two to five years
Overhaul of the pump assures safe and long period of operation. For the case of high frequency of
operations, early overhaul is requested.
5) Check that there is no leakage from the joint of pump and piping. When there is leakage, tighten the
connecting bolts.
6) In order to avoid the fire accident by the contact failure caused by the slack of wiring, check whether
motor connections and panel connections are not loosened.
3. Precautions during stop operation
1) When the pump is left underwater in stop-operating state, measure the insulation resistance of motor
intermittently. If there is no abnormality in the insulation resistance, operate the pump to prevent the
sliding section of the pump from rusting. When the pump is entered restarting, the procedure shall
conform to ６ "Operation".
2) When the pump is stored on ground, clean the pump and then store it at a dry site. (temperature of
storage: -5~40°C) On reusing the pump, follow the instructions of ５ "Installation" and ６
"Operation".
4. When motor protection is activated.
Check causes that motor protection is activated. After removing the causes, start the operation again.
5. Consumables
1) Replace the parts when they enter the following-described condition.
Consumable
parts
Mechanical
seal
Sheet
packing
Seal washer
Lubricant oil
O-ring
Bearing
Symptoms
or
approximate
period for
replacement
Oil in the
mechanical
seal
chamber
becomes
cloudy.
At every
disassembly
for
inspection.
At every oil
replacement.
Lubricant
becomes
cloudy or
blackish.
At every
disassembly
for
inspection
Expected
replacement
time
One year or
6000 hours
of total
operating
hours, either
of shorter
one.
Once every
six months.
Every 6000
hours
The above-given replacement time is a standard under normal operation.
2.2kW
3.7kW
5.5kW
7.5kW
11kW
15kW
22kW
Mechanical seal < mm >
Φ30
Φ40
Φ45
Seal washer (W12 SUS) < mm >
Φ22×Φ11.8×1.2( Outer diameter × Inner diameter × thickness)
Lubrication oil < ｍＬ >
(Turbine oil ISO VG32)
DML
1100
1600
2900
3000
DMLV
1100
1780
3380
3550
O-ring < mm >
φ170×φ3.1
φ180×φ3.1
φ220×φ3.1
For detail of Model, etc. of individual parts, inquiry shall be given to the supplier or EBARA CORP.
OUTPUT
Parts name