ABOUT DUHM

ABOUT DUHM

ABOUT MANUFACTURE

Quality Control Application & Cases

Quality Control

Zhushi Weiye

New products testing

① Products are tested at different working conditions to ensure the best performance and reliability of the system.

② 3 months long time running test for a new product.

③ Transporation test for each model.

Zhushi Weiye

Incoming inspection

① Set up the supplier Assessment .Persist in adopting excenllent supplier and their high-quality components.

② 100% aging test inspection of PCB module

③ 100% pressure test inspection of pressure gauge

④ 100% inspection for condensor with 0.6 Mbar pressure

Zhushi Weiye

Process inspection

① Phosphorous copper welding for more reliable refrigerant circuit system.

② 3 times refrigerant leakage test.

③ 45 mins running test for every unit.

④ Complete electrical safety test.

Zhushi Weiye

Finished product inspection

① Drying/cleaning/anti-rust treatment for every unit.

② 1% random inspection for mass production in the lab.

Core Components

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R&D

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CNAS Laboratory Accreditation

Wotech Test Center is accredited in accordance with ISO/IEC17025:2005, General Requirements for the Competence of Testing and Calibration Laboratories by CNAS(China National Accreditation Service for Conformity Assessment) and gained certificate in 2019, equating to the international mutual recognition of International Laboratory Accreditation Cooperation(ILAC) as third independent party test organization for heat pump performance tests.

Zhushi Weiye

Enthalphy Laboratories

Nos. of Enthalphy Labs: 6 
Tested Capability: 3~240kw 
Air Temp. regulated : -30 ~45 ℃ 
Water Temp. regulated: 0 ~65 ℃ 
Air flow regulated: 15000~66000m3/h

 

Zhushi Weiye

Reliability Running Test Chambers

Object : Enthalphy tested model before mass production 
Reliability Test: Non-stop running 
Duration : Upto 2000 hrs 
Purpose: To ensure performance reliability

 

Zhushi Weiye

Acoustic Chamber

Acoustic pressure level range: 20~120dB(A) 
Measurement accuracy: 0.1dB(A) 
Maximum testable heating capacity: 240Kw 
Maximum testable size: 2.5m in width,2.5m in height

 

Zhushi Weiye

Vibration Test Platform

Test duration: 4 hrs
Maximum weight : 2000kg 
Accelerated speed 3.2 m/s² 
Simulated speed 20-60km/h

 

Finished product inspection

Finished product inspection


Core Components

图片名称

R&D

图片名称

CNAS Laboratory Accreditation

Wotech Test Center is accredited in accordance with ISO/IEC17025:2005, General Requirements for the Competence of Testing and Calibration Laboratories by CNAS(China National Accreditation Service for Conformity Assessment) and gained certificate in 2019, equating to the international mutual recognition of International Laboratory Accreditation Cooperation(ILAC) as third independent party test organization for heat pump performance tests.

Zhushi Weiye

Enthalphy Laboratories

Nos. of Enthalphy Labs: 6 
Tested Capability: 3~240kw 
Air Temp. regulated : -30 ~45 ℃ 
Water Temp. regulated: 0 ~65 ℃ 
Air flow regulated: 15000~66000m3/h

 

Zhushi Weiye

Reliability Running Test Chambers

Object : Enthalphy tested model before mass production 
Reliability Test: Non-stop running 
Duration : Upto 2000 hrs 
Purpose: To ensure performance reliability

 

Zhushi Weiye

Acoustic Chamber

Acoustic pressure level range: 20~120dB(A) 
Measurement accuracy: 0.1dB(A) 
Maximum testable heating capacity: 240Kw 
Maximum testable size: 2.5m in width,2.5m in height

 

Zhushi Weiye

Vibration Test Platform

Test duration: 4 hrs
Maximum weight : 2000kg 
Accelerated speed 3.2 m/s² 
Simulated speed 20-60km/h

 

Application & Cases

Application & Cases

Project in Brisbane

Zhushi Weiye

Incoming inspection

Zhushi Weiye

Project in Australia

Zhushi Weiye

Project in South Africa

Zhushi Weiye

Poject in China

Zhushi Weiye

Core Components

图片名称

R&D

图片名称

CNAS Laboratory Accreditation

Wotech Test Center is accredited in accordance with ISO/IEC17025:2005, General Requirements for the Competence of Testing and Calibration Laboratories by CNAS(China National Accreditation Service for Conformity Assessment) and gained certificate in 2019, equating to the international mutual recognition of International Laboratory Accreditation Cooperation(ILAC) as third independent party test organization for heat pump performance tests.

Zhushi Weiye

Enthalphy Laboratories

Nos. of Enthalphy Labs: 6 
Tested Capability: 3~240kw 
Air Temp. regulated : -30 ~45 ℃ 
Water Temp. regulated: 0 ~65 ℃ 
Air flow regulated: 15000~66000m3/h

 

Zhushi Weiye

Reliability Running Test Chambers

Object : Enthalphy tested model before mass production 
Reliability Test: Non-stop running 
Duration : Upto 2000 hrs 
Purpose: To ensure performance reliability

 

Zhushi Weiye

Acoustic Chamber

Acoustic pressure level range: 20~120dB(A) 
Measurement accuracy: 0.1dB(A) 
Maximum testable heating capacity: 240Kw 
Maximum testable size: 2.5m in width,2.5m in height

 

Zhushi Weiye

Vibration Test Platform

Test duration: 4 hrs
Maximum weight : 2000kg 
Accelerated speed 3.2 m/s² 
Simulated speed 20-60km/h

 

Application & Cases

Copyright ©Huaming Heat Pump International Sales Division

Tel: +86-757-22860323

Add: No.34, South Road, Yongfeng Industrial Park Shunde District Foshan 528000, Guangdong Province.P.R.China

E-mail: info@hmheatpump.com

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