5-6
5.4
Maintenance/inspection table
Warning
Before carrying out inspection that requires disassembly and service, be
sure to turn off the main power supply.
Otherwise, you may receive an electric shock.
Caution
Only the service personnel with special knowledge of repairs are allowed
to disassemble the product. For work such as replacement of parts,
repairs, or inspection that requires disassembly of the equipment, make
sure to contact a specialized vendor or the service center specified by
TERAL.
Incorrect work may cause a failure or accident.
Caution
Replace the packing and O-rings during an overhaul.
Otherwise, water leakage may occur.
Table 5-4-1: Maintenance/checking table
S
ec
ti
on
Inspection Point /
Place
Item
Method
Criterion
Cycle
Replacement of consumables
(as a guide)
D
a
ily
6 m
ont
h
s
1 y
ear
A
m
bi
ent
c
ondi
ti
on
s
Temperature
Compliant with
specifications
Measure 0 thru 40
°
C
Humidity
Measure
0% to 85%RH
No condensation
Dust, dirt, etc.
Visual
check
No dust and dirt
P
ow
er
Power terminal
block
Voltage
Measure
Rated voltage has been
applied.
Voltage fluctuations Measure
Within the allowable
fluctuation range
Loose screws
Retighten
-ing
No loose screws
P
um
p and
m
ot
or
Operation status
Performance
Visual
check
As per specifications
If any failure is found, overhaul the
pump.
Current value
Measure As per specifications
Noise, vibration
Hear
Touch
No unusual vibration
Around the main
shaft
Smooth rotation
Rotation
by hand
Smooth rotation
Mechanical seal
Water leakage
Visual
check
No water leakage
Once a year or consecutive 8000
hours
O-ring
-
-
-
Every overhaul
Bearing (Motor)
Heating/Noise
/Vibration
Touch
Hear
No abnormal condition
Once
every three
years
or
consecutive 15000 hours
Grease
replenishment
Visual
check
Hear
No unusual vibration and
noise
No grease flows out.
Refer to Section 5.3 for the amount of
grease to be replenished and
replenishment intervals.
Winding resistance
Resistance between
wires (U-V, V-W,
W-U)
Measure
Uniform resistance
between wires
Insulation
resistance
Insulation resistance
between the ground
and each lead
Measure
1MΩ
or more
Note
Information in the “Replacement of consumables (as a guide)” column
shows standard values that are applicable when the equipment has been
properly used and periodically inspected. Therefore, depending on the
operating conditions, you may need to replace the consumables earlier
than those intervals.
Note
Waste used parts or other items removed during repairs or replacement
must be disposed of by a specialized contractor.
