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Hitachi air compressor repair

Wednesday - 02/01/2019 20:32

During operation and use of Japanese Hitachi Air Compressor - HISCREW 2000 Series (Type without enclosed air dryer as Model: OSP - 22S5AI, OSP - 22S6AI, OSP - 22M5AI, OSP - 22M6AI, OSP - 37S5AI , OSP - 37S6AI, OSP - 37M5AI, OSP - 37M6AI Type of air dryer included: Model: OSP - 22S5RI, OSP - 22S6ARI, OSP - 22M5ARI, OSP - 22M6ARI, OSP - 37S5ARI, OSP - 37S6ARI, OSP - 37M5ARI, OSP - 37M6ARI).

The operator faced to some errors that were warned on the control screen of screw air compressor without knowing the reason sometime ??? To answer this question we would like to mention some basic errors that help operators identify and troubleshoot hitachi air compressors quickly and efficiently 

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Minh Phu -  Hitachi air compressor maintenance 
 

 A/S
Code 

Light
Action

Category of problem

HISCREW
Shutdown


Causes 

What action to take

E-17   

SHUTDOWN
On (flashing)

overloading

yes

Failure of power supply

Check the power supply for voltage drop and imbalance. Corect it if required

       

High discharge pressure

Check and correct the capacity control setting and/or readjust the modulator valve, if the discharge pressure is higher than the specifiction pressure.

        High discharge pressure

Check the oil separator element. Replace it if it is clogged.

        Failure of main motor 

Check the motor for insulation resistance etc.

       

Failue of air end 

Checkthe air end

 

 A/S
Code 

Light:
Action

Category of problem

HISCREW
shutdown

Cause 

What action to take

E-18 

SHUTDOWN
On(Flashing)

High discharge temperature 

yes

High ambient temperature

Ventilate the room to reduce the ambient temperature to 40 degree

       

Low level oil

Add oil. (Disconnect the power andmake sure that the discharge pressure guage reads 0MPa in advance)

       

Dirty or clogged oil cooler 

Clean the cooling fins 

       

Dirty or clogged oil cooler 

Replace the oil filters element 

E-23

ALARM
On(Flashing)

High discharge temperature  > 105ºC

No

Same as the E-18 above

Same as the E-18 above

E-19

SHUTDOWN
On(Flashing)

Failed air dryer

Yes

Triping of an air dryer's protective device during operation

 
 

ALARM
On (Flashing )

 

No

   

E-01

SHUTDOWN:
On (Flashing)

Reversal phase connection

Yes

Power connected in a reversal phase 

Disconect the power and change 2 of the 3 power cord wire

E-02

SHUTDOWN:
On (Flashing))

Phase-lacking connection

 Yes

Power connected with a lack of phase 

Check the power supply. Tightly reconnect the power cord wire.

E-11

SHUTDOWN:
On (flashing)

High discharge temperature > 110ºC
 

Yes

Failure of Oil separator element  

Replace the oil separator element and the oil

E-12

SHUTDOWN:
On (Flashing )

Abnomal high discharge pressure 

Yes

Failure of Oil separator element

Check the oil separator element . Replace if required 

       

Failue of contactor 52

Disconnect the power and tightly reconnect the 52 wires

E-16

SHUTDOWN:
On (Flashing)

Failure of contactor 42

Yes

Failue of contactor 52

Disconnect the power supply, check the contactor 42, tightly reconnect the 42 wires and replace if required.

E-51

SHUTDOWN:
On (Flashing)

Failure of contactor 52

Yes

Failure of contactor 52

Disconnect the power supply, Check the 52. Tightly reconnect the 52wires. Replace 52 if necessary.

E-31

SHUTDOWN:
On (Flashing)

Failed or disconnected thermistor  sensor 1

Yes

Failure or disconncetion of thermistor TH1

Disconnect the power and check the TH1. Replce it if nescessary. Tighly reconnect the TH 1 wires

E-32

SHUTDOWN:
On (Flashing )

Failed or disconnected thermistor  sensor 

Yes 

Failure or disconncetion of thermistor TH2

Disconnect the power and check the TH2. Replce it if nescessary. Tighly reconnect the TH 2 wires

E-33

SHUTDOWN:
On (Flashing )

Failed or disconnected pressure sensor

 Yes 

Failure or disconncetion of  pressure sensor  PS

Disconnect the power and check the PS. Replace it if nescessary. Tighly reconnect the PS wires

E-41

SHUTDOWN:
On (Flahing )

Failed control device 

Yes

Failure of ROM ( or printed circuit board) 

Disconnect and reconnect the power. If a problem still occurs, replace the printed circuit board.

E-42

SHUTDOWN:

On (Flashing )

Failed control device 

Yes

Failure of ROM ( or printed circuit board)

Disconnect and reconnect the power. If a problem still occurs, replace the printed circuit board.

E-43

SHUTDOWN:
On (Flashing)

Failed control device 

Yes

Failure of E2ROM  ( or printed circuit board) 

Disconnect and reconnect the power. If a problem still occurs, replace the printed circuit board.

E-21

ALARM:
On (Flashing )

Clogged air intake filter

No

Clogging of air intake air 

Clean the air intake filter element 

E-59

ALARM:
On (Flashing)

Excessive load/ unload 

 No 

Total 1000000 times loaded / unloaded 

 Replace the consumable parts of suction throtte valve.

E-22

ALARM:
On(Flashing)

Option

No

Low oil level 

 

E-15

SHUTDOWN:
On (Flashing)

Option

Yes

   

E-54

ALARM:
On (Flashing)

Option 

No

   
 

AUTOSTART On (Flashin)

Instantaneouse power interruption  (PS)

No

IPS of below 5 seconds 
 

Check the power supply

       

IPS of below 5 seconds 

Check the power supply

Minh Phu Machinery and Technical Services Co., Ltd specializes in repairing, maintaining Hitachi air compressors, air dryers and providing replacement equipment (oil filter, air filter, oil, oil separator, cooler .. ...) for Hitachi air compressors. Come to us, customers will receive the best and fastest service with professional, dedicated and thoughtful style. We have good service after sales, quality goods, reasonable prices ... When you need to buy machines, maintain air compressors, or have problems with air compressors, air dryers, please Call us immediately (+84)919.23.28.26 for free advices. A well-trained technical team with lots of experience, we believe that it will meet your the needs.
 

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