Q1
Can I recover refrigerant from a system with the MalcoEdge Elite Flow Vacuum Pump?
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We do not recommend using a vacuum pump for recovery.
Q2
How do microns compare to PSI?
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1 micron of mercury equals 0.000019337 PSIG. For reference, if you get under 500 microns you are dealing with a deep vacuum.
Q3
What are the differences between a recovery machine and a vacuum pump?
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A MalcoEdge Recovery Machine removes liquid refrigerants, moisture, and vapor from a system that has previously been charged prior to service. It does not typically draw a system into a deep vacuum. A MalcoEdge Vacuum Pump, on the other hand, removes any remaining vapor from a system and draws it down into a deep vacuum. A vacuum pump is also used to perform a decay test.
Q4
What does “BL” stand for on MalcoEdge Vacuum Pumps?
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BL stands for Brushless motor. Brushless motors are also sparkless, making them safer to use around refrigerants.
Q5
What micron level should I draw my HVAC system down to?
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We recommend referring to the equipment manufacturer for the target vacuum range. Some MalcoEdge vacuum pumps can pull systems down to 15 microns, but many manufacturers recommend a minimum of 300 or 500 microns.
Q6
What happens if the power goes out while I am pulling a vacuum?
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MalcoEdge Vacuum Pumps have a solenoid valve that seals off the system if there is a loss of power. When power is restored, the valve will automatically release and the pump will continue running to draw the system into a deeper vacuum.
Q7
How often should I replace my vacuum pump oil?
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We recommend changing your oil every time you draw down a system or whenever the oil appears dirty. MalcoEdge oil is available in 1-quart or 1-gallon packages.
Q8
I am having difficulty reaching peak vacuum. What should I check first?
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Check your oil first. Dirty oil will limit the vacuum your pump can achieve.
Q9
Do you offer a quick-change oil system for MalcoEdge vacuum pumps?
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No, a quick-change oil system is not currently offered.
Q10
Do you offer pre-measured vacuum pump oil?
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MalcoEdge oil is available in 1-quart or 1-gallon packages. It is not offered pre-measured.
Q11
What is the warranty for MalcoEdge recovery machines and vacuum pumps?
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MalcoEdge Recovery Units and Vacuum Pumps include a 1-year standard manufacturer’s warranty, which extends to a 3-year warranty if the product is registered by the end user at the time of purchase. See Malco’s website for additional information and to register your product.
Q12
Do I need to flush and clean my equipment when switching between refrigerants?
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Yes. Some refrigerants use different lubricants and cannot be mixed. As a best practice, flush pumps, hoses, manifolds, and other components between services to prevent cross-contamination. We recommend using ACE Powerflush when switching refrigerants.