Vacuum Gauge Maintenance
Bought to you by CPS
Did you know that the vast majority of vacuum gauges require some routine maintenance, if you are in doubt about the accuracy of your vacuum gauge, we suggest that before you consider sending it back to the manufacture or manufacture’s service agent for repair, that you first clean the vacuum gauge and then check its operation, listed below is how to clean and check a CPS gauge and other brands will be very similar in process, however ensure you read the manufacturer’s instructions before commencing.
A vacuum gauge can sometimes get oil into the vacuum chamber and onto the vacuum sensor and this will affect the accuracy of the sensor, one way that the sensor can get contaminated is by turning off your vacuum pump while the vacuum gauge is still attached and close to the vacuum pump, the equalisation of the pressure can force oil from the vacuum pump and lines into the vacuum chamber and on the vacuum gauges sensor.
One sign that shows if there is likely a sensor clean required, is by looking at the rubber inlet O ring or gasket, if this looks moist or shiny then there is a distinct possibility that it has oil on it and the oil could have gone through to the vacuum sensor.
This is how you clean the CPS vacuum gauge:
1. Remove core depressor and black HXG gasket.
2. Invert the gauge and pour 1 teaspoon of methylated spirits or high grade alcohol into the sensor, the best method for this is with a syringe.
3. Hold the unit in one hand with your thumb over the cup area.
4. Vigorously shake the unit to produce a swirling effect of the solution in the housing.
5. Invert again and shake the solution out from the sensor assembly, then repeat the process again however swirling in the opposite direction to ensure you get good coverage over the whole internal sensor.
6. Insert a new gasket and the depressor and leave to dry.
Once you have cleaned your vacuum gauge and given it time to ensure the alcohol is dry (preferably overnight) then it’s time to do a basic test of the gauges operation and to do this we recommend the following.
Use a vacuum pump that you know is in good condition and ensure it has new vacuum pump oil in it, this is important as old or contaminated vacuum pump oil has a substantial effect on the performance of any vacuum pump and can give you misleading readings as to a vacuum gauge accuracy.
Turn the vacuum pump on, let it run for a few minutes and then connect the vacuum gauge direct on to the vacuum pump inlet, not via any hoses or fittings.
Any reasonable vacuum pump with new oil should pull around 50-70 microns when connected directly, if your vacuum gauge is reading around this amount then you are good to go and continue using the gauge with the knowledge that it is operating correctly.
Heatcraft Celebrates with Customers
Heatcraft customers Australia wide were treated to a spectacular night of entertainment during ARBS 2016.
The Heatcraft Fire and Ice Cocktail Event held at Crown’s Studio 3, was aptly decorated in a Fire and Ice theme with an impressive ice sculpture as the centrepiece. Customers were able to take in unrivalled views over Southbank and Melbourne's city skyline while enjoying live music, magical entertainment and anecdotes from special guest speaker, Jeff "Thommo" Thomson - former test
cricketer recently inducted into the Australian Cricket Hall of Fame.
The event was just one of the highlights during the company’s week at ARBS. The Heatcraft stand attracted many visitors keen to inspect the latest Kirby refrigeration equipment range, including the Kirby eCOBoost Transcritical System, energy efficient Lennox heating units, smart access kiosks and an expanding InterLINK range amongst other new products.
Heatcraft also hosted esteemed international guests, Mr Robert DelVentura (Director, R&D, Heatcraft Worldwide Refrigeration) and Mr Masood Ali (Senior Manager, Mechanical Engineering, Heatcraft Worldwide Refrigeration, USA). Mr DelVentura and Mr Ali both presented at the ATMOsphere Natural Refrigerants Conference on Monday and continued at ARBS with customer meetings and an exclusive product presentation on alternate refrigerant systems (Transcritical / NH3 systems).
For more information on any of the products viewed at ARBS, contact your local Account Manager on 13 23 50.
Proudly supporting HVAC&R Apprentices
As the WorldSkills Australia Refrigeration Principal Category Partner, ARBS 2016 took on an added air of excitement for Heatcraft Australia. With the industry watching on, 10 of the nation’s best refrigeration apprentices competed for the title of 2016 Australian Refrigeration Apprentice of the Year.
During the 3 days of competition, 10 competitors from around the country had just 18 hours to complete four projects: Installing a refrigeration system, commissioning an air conditioning system, refrigeration fault finding and electrical fault finding.
The winners were;
TAFE Queensland SkillsTech
South West QLD Region
TAFE Queensland SkillsTech
Sydney West Region
TAFE NSW South Western Sydney Institute
Heatcraft has a long association with WorldSkills Australia. Michael Ryan, Director of Sales at Heatcraft Australia, commented;
"We feel it's important to support the industry we're a part of. It's important to encourage young people to achieve greatness, but also to realise that they're part of something much greater than what they do. The stronger our industry is at the grass-roots level, the stronger it will be longer term and more relevant to the country."
Heatcraft also supports refrigeration and air-conditioning apprentices with an Apprentice Toolcard that entitles holders to additional discounts on selected tools of the trade across its Heatcraft and Heatcraft Plus Wholesale Network. The Toolcard was first launched in 2014 and has now been made available to refrigeration and air-conditioning apprentices across New Zealand.
Refrigeration and air-conditioning apprentices can obtain an Apprentice Toolcard by visiting their local Heatcraft branch with their Student I.D. Holders who register their details online will receive additional special offers and periodic, informative ‘tech tips’.
For more information, contact your local Heatcraft branch on (AU) 13 23 50 or (NZ) 0800 653 330.
Heatcraft presents at ATMO Australia 2016
The ATMOsphere Review Board has made its first round of selections for case studies to be presented at ATMOsphere Australia 2016, which will take place on 16 May in Melbourne, Australia.
Congratulations to Mayekawa Australia, Scantec Refrigeration Technologies, Gordon Brothers Industries, SCM Frigo, Carter Retail Equipment and Heatcraft Australia, who will present the following case studies during ATMOsphere Australia 2016.
Practical Applications of an Ultra-low Charge NH3/CO2 Cascade System in a Retail Environment
Heatcraft Worldwide Refrigeration presents a case study for the state-of-the-art NH3/CO2 Cascade refrigeration system utilizing all natural refrigerants for Supermarket and Cold Storage Applications. Natural refrigerants, such as NH3 and CO2, yield superior thermodynamic performance in vapor-compression cycles. The presentation will provide illustrations of an ultra-low charge NH3 system in cascade with CO2 that has incorporated a variety of design features that are highly energy efficient, leading to a reduction in TCO (Total Cost of Ownership) up to 20%. Design strategies that are proven in the field will illustrate the accomplishments of the ultra-low charge of NH3 @ 0.34 Kg/TR, which for a medium size grocery store of 3700 Sq. Meter, is only 43 Kgs.
Heatcraft will dispel the myths of regulatory hardships and prove immunity to regulations by sharing experiences from a Piggly Wiggly store in Columbus, GA, USA, which utilizes the ultra-low charge NH3/CO2 cascade system. This study will share the lessons learned and will validate the design and performance evaluation of the NH3 system in the Supermarket environment.
Results of preliminary energy efficiency data directly obtained from the real-life operating store will be presented with a NH3 system and a HFC system that is installed at the store, giving an unparalleled comparison between NH3 and HFC systems. Results prove that when a system is designed correctly, a NH3 system achieves more than 15% energy efficiency when compared with a HFC system.
About ATMOsphere Australia 2016
The ATMO events are not only growing in size but also conquering new territory, as the first ATMOsphere Australia 2016 will be held in Melbourne on 16 May. Established as a significant forum for discussions on the business case for natural refrigerants in several regions, the focus will now shift to Australia and New Zealand. The ATMOsphere Australia 2016 participants will discover emerging trends in commercial and industrial refrigeration as well as air conditioning with natural refrigerants.
The conference will consist of a full programme of end user and supplier panels, policy, market trends and technology case study sessions, without forgetting the unparalleled networking opportunities. An exclusive reception will be the perfect ending to this information-packed one-day event. ATMOsphere Australia 2016 is a truly unique opportunity to meet and build lasting partnerships with leading end users, contractors, suppliers and government representatives.
To register for the event, click here.