Chapter 6 - Troubleshooting & Maintenance

6.7 Daily and Periodic Inspection Items

Inspection Location

 

Inspection Item

 

 

 

 

 

Period

 

 

 

 

 

 

 

 

 

 

 

 

Inspection

 

Daily

 

year1

year2

 

Inspection Method

 

 

Criterion

 

 

Measuring

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Instrument

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Ambient

 

Is there any dust?

 

 

 

 

 

 

Refer to the precautions

 

 

Temperature:

 

 

Thermometer,

 

 

Is the ambient temperature and

 

 

 

 

 

 

 

 

 

-10~+40 no

 

 

Hygrometer,

 

Environ-

 

humidity adequate?

 

Ο

 

 

 

 

 

 

freezing.

 

 

Recorder

 

 

ment

 

 

 

 

 

 

 

 

 

 

 

 

Humidity: Under

 

 

 

 

All

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

90% no dew

 

 

 

 

 

Equipment

 

Is there any abnormal oscillation

 

Ο

 

 

 

 

Use sight and hearing

 

No abnormality

 

 

 

 

 

 

or noise

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input

 

Is the input voltage of the main

 

Ο

 

 

 

 

Measure the voltage between

 

 

 

 

 

Digital Multi-

 

Voltage

 

circuit normal

 

 

 

 

the terminals R, S, T

 

 

 

 

 

Meter/Tester

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Megger check (between the main

 

 

 

Ο

 

 

Undo the inverter connections

 

 

Over 5MΩ

 

 

DC 500V

 

 

 

 

 

circuit and the ground)

 

 

 

 

 

 

short the terminals R, S, T, U,

 

 

No fault

 

 

class Megger

 

 

All

 

Are any fixed parts removed?

 

 

 

Ο

Ο

V, W and measure between

 

 

 

 

 

 

 

 

 

 

Are there any traces of

 

 

 

Ο

 

 

these parts and the ground.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

overheating at each component’s

 

 

 

 

 

 

Tighten the screws.

 

 

 

 

 

 

 

 

 

 

 

 

cleaning?

 

 

 

 

 

 

Visual check.

 

 

 

 

 

 

 

 

Conductor/

 

Is the conductor rusty?

 

 

 

Ο

 

 

Visual check

 

 

No fault

 

 

 

 

 

 

Wire

 

Is the wire coating damaged?

 

 

 

Ο

 

 

 

 

 

 

 

 

 

 

 

Terminal

 

Is there any damage?

 

 

 

Ο

 

 

Visual check

 

 

No fault

 

 

 

 

 

 

IGBT

 

Check the resistance between

 

 

 

 

Ο

Undo the inverter connection

 

 

(Refer ‘How to

 

 

Digital Multi-

 

Module

 

each of the terminals.

 

 

 

 

 

 

and measure the resistance

 

 

Check Power

 

 

Meter/Analog

Circuit

/Diode

 

 

 

 

 

 

 

 

 

between R, S, T ⇔ P, N and

 

 

Components”)

 

 

Tester

Module

 

 

 

 

 

 

 

 

 

U, V, W ⇔ P, N with a tester.

 

 

 

 

 

 

 

Main

 

 

 

 

Is there any liquid coming out?

 

Ο

 

 

 

Visual check.

 

 

No fault

 

 

Capacitance

Smoothing

 

Is the safety pin out, and is there

 

 

 

Ο

 

 

Measure with a capacitance-

 

 

Over 85% of the

 

 

Measuring

 

 

 

 

 

 

 

 

 

 

 

 

Capacitor

 

any swelling?

 

 

 

 

 

 

measuring device.

 

 

rated capacity

 

 

Device

 

 

 

 

 

Measure the capacitance.

 

Ο

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is there any chattering noise

 

 

 

Ο

 

 

Auditory check.

 

 

No fault

 

 

 

 

 

 

Relay

 

during operation?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is there any damage to the

 

 

 

Ο

 

 

Visual check.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

contact

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is there any damage to the

 

 

 

Ο

 

 

Visual check.

 

 

No fault

 

 

Digital Multi-

 

 

 

 

 

resistor insulation?

 

 

 

 

 

 

 

 

 

Error must be

 

 

Meter/Analog

 

Resistor

 

Is the wiring in the resistor

 

 

 

Ο

 

 

Disconnect one of the

 

 

within ±10%

 

 

Tester

 

 

 

 

 

damaged (open)?

 

 

 

 

 

 

connections and measure

 

 

the displayed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

with a tester.

 

 

resistance

 

 

 

 

 

 

 

 

 

Is there any unbalance between

 

 

 

Ο

 

 

Measure the voltage between

 

 

The voltage

 

 

Digital Multi-

 

 

 

 

 

each phases of the output

 

 

 

 

 

 

the output terminals U, V and

 

 

balance between

 

 

Meter/Rectifyi

CircuitControl CircuitProtective

 

 

 

 

voltage?

 

 

 

 

 

 

W.

 

 

the phases for

 

 

ng Voltmeter

Operation

 

 

 

 

 

 

 

 

 

 

 

 

200V (800V)

 

 

 

 

 

 

Nothing must be wrong with

 

 

 

Ο

 

 

Short and open the inverter

 

 

class is under

 

 

 

 

 

 

Check

 

display circuit after executing the

 

 

 

 

 

 

protective circuit output.

 

 

4V (8V).

 

 

 

 

 

 

 

 

 

sequence protective operation

 

 

 

 

 

 

 

 

 

The fault circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

operates

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

according to the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

sequence.

 

 

 

 

97

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Cleveland Range inverter manual Daily and Periodic Inspection Items, Period Inspection
Page 102 Page 104

inverter specifications

The Cleveland Range inverter is a state-of-the-art piece of kitchen equipment designed to elevate cooking efficiency and precision in commercial kitchens. This versatile appliance is particularly well-suited for establishments such as restaurants, cafeterias, and catering operations, where high-performance and reliability are critical to success.

One of the standout features of the Cleveland Range inverter is its innovative inverter technology. Unlike traditional cooking equipment that utilizes standard heating elements, the inverter system allows for continuous, variable power control. This means that cooks can seamlessly adjust the cooking temperature, offering unparalleled control over the cooking process. The result is more consistent cooking outcomes and a significant reduction in food preparation time, ensuring that dishes are cooked just right every time.

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Durability and ease of maintenance are further characteristics of the Cleveland Range inverter. Built with high-quality materials and a robust construction, it is designed to withstand the rigors of a busy kitchen environment. The straightforward design allows for easy cleaning and maintenance, ensuring that the inverter remains in top working condition over its lifespan.

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