Hitachi L300P-1100H, Инструкция по эксплуатации

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5-2
5.2 Daily inspection and regular inspection
Inspection
cycle
Regular
Inspection
parts
Inspection
item
Inspection item Inspection methods Decision standard Meter
Surroundings
Check temperature of
surrounding, humidity,
dust.
Refer to 2.1 Installing.
Temperature range is
between –10 and 40
degrees. No dew present
and humidity is below 90%.
Thermometer,
hygrometer,
recorder
W hole
equipment
Is there abnormal
vibration, abnormal
sound?
By watching, hearing. No trouble.
W hole
Power
voltage
Is main circuit voltage
normal?
Measurement of inverter
terminal R, S, T phase
voltage
Within alternating voltage
allowable change.
Tester,
digital multi-
meter
W hole
(1)Megger check
Between circuit
terminal and earth
terminal
(2)Are all screws
terminals tight?
(3)Is there any sign of
over-voltage?
(4)cleaning
(1)After you remove
connector J61 from inside
the inverter take out the
wiring of input/output of
inverter main circuit
terminal and control
terminal, measure
beween parts shortened
terminal
R,S,T,U, V,W,P,PD,N,RB
and earth terminal with
megger.
(2)Incremental clamping.
(3)Watch. (1)To be over 5M ohm.
(2)(3) No abnormality . DC500V
class megger
Connection
conductor/
electric line
(1)Is there warp in
conductor?
(2)Is there any damage
of coating of wires? (1)(2) By watching (1)(2) No abnormality
Terminals Is there any damage? By watching. No abnormality.
Inverter parts
Converter parts
Resistance check
between each terminal.
Take out connect of inverter,
measure terminal between
R,S,T and P,N, between
U,V,W and P,N with tester x
1 Ohm range.
Refer to check method of
5.5 inverter, converter parts. Analog form
tester
Smoothing
capacitor
(1)Is there any liquid?
(2)Does relief valve
come out? Is there
any swell?
(3)Measure of
allowable
static-electricity.
(1),(2) By watching.
(3)Measure with capacity
measure.
(1),(2) No abnormality
(3) Over 80% of rated
capacity.
Capacity
meter
Relay
(1)Is there abnormal
sound in operation?
(2)Is there damage to
the contacts? (1)By hearing
(2)By watching (1),(2) No abnormality
Main
circuit
Resistor
(1)Is there any crack,
discoloration of
resistance insulator.
(2)Confirm existance of
breaking of wire. (1)By watching.cementing
resistance. Curl type
resistance.
(2)Take out connection to
other side, measure it with
tester.
(1)No abnormality
Error to be within 10% of
Display resistance. Tester,
Digital multi-
meter
Control
circuit,
Protection
circuit
Operation
check
(1)Confirm balance of
each output phase
voltage with inverter
single operation.
(2)Operate sequence
protection moving
test. And no
abnormality. (1)Measure inverter output
terminal U,V,W phase
voltage.
(2)Short or open protection
circuit output of inverter.
(1)Phase voltage balance
200V/400V class is within
4V/8V.
(2)On sequence, to operate
abnormality.
Digital multi-
meter,
rectification
type
voltmeter
Cooling
system
Cooling fan
(1)Is there abnormal
vibration, abnormal
sound?
(2)Is there loosening of
connecting parts? (1)Revolve by hands in the
state of tone-on idle.
(2) By watching.
(1)Revolving smooth.
(2)No abnormality.
Display
(1)Is the LED lamp
illuninated?
(2) Cleaning. (1)Lamp indicates lamp on
operator.
(2) Cleaning with cloth. (1)Confirm light.
Display
Meter
Is direction value
normal? Confirm indication value of
board meter. Satisfy normal value,
control value.
Voltage
meter,
current
meter
W hole
(1)Is there abnormal
signal,abnormal
sound?
(2)Is there any
abnormal odour?
(1)By hearing, feeling,
watching.
(2)Abnormal odour from
overheat, damage etc.
confirmation. (1)(2) No abnormality.
Motor
Inslated
resistance
(1)Megger check
(terminal collection -
earth terminal)
Remove connection to U,V
and W and disconnect
motor wiring.
(1) To be over 5M ohm.
DC500V
class megger
(Note) Life time of the capacitors depends on the ambient temperature.
Chapter 5 Maintenance, Inspection
Da
il
y
1 year 2 year