HVAC Vacuum Pump Maintenance

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Category:

Howto & Style

Tags:

• DrZarkloff
• HVAC/R
• Starkloff
• James
• Allen
• coil
• cleaning
• evaporator
• vacuum
• pump

[usernamekjah]

Hey Q-Q (quick-question) do you still own/use that same vacuum pump?

Has any problems came up with I know if the brand but some folks say its heck if the van goes on it since there aren't replacement parts for it. And the options are buying a pricey pump cartridge or just a new pump....Sorry Q-Q and long question. Hahaha

[DrZarkloff]

@usernamekjah I'm very happy with this vacuum pump.

[OneBiOzZ]

how often should you change the oil?

[DrZarkloff]

@OneBiOzZ Some techs replace the oil after each use.

[Cema23]

can this be used in balloon castle?

[DrZarkloff]

@Cema23 If you can figure out how.

[phuckq]

I've had problems with those yellow jacket pumps with the built in gauge on the pump itself sticking. I now use a JB and have so far had no problems.

[Cema23]

oh, okay :-) thanks for the response

[fyp777]

Hi DrZ

like your video.

when is the gas ballast on vacuum pump should be open or close.

thank you

[DragonFlyback256]

@Cema23

LOL, i think not. It could make the pressure if you give it time and the balloon castle is completely leak free. Vacuum pumps compressors usually have not much flow volume so it may take a looong time.

[BGreenHVAC]

PLEASE, tell me you are not working with refrigerants! An undercharged or overcharged unit undergoes excessive wear and tear in addition to being inefficient on utilities. If you don't know what you are doing. Learn before you work on systems. I hate it when somebody who is uneducated cuts corners and makes the customer feel like they got a good deal, but in reality they were screwed. The job was not done right. I encounter this often. Watch Dr. Z's Hacked video. I get a laugh

[BGreenHVAC]

@coltonnaslund If you do not understand how to do this basic task, how are you able to get refrigerant? In my area you are required to have an EPA License to handle refrigerants, and a mechanical license to perform any work on units. If you don't understand the basics, you shouldn't be doing it. this task is in every textbook I ever seen in HVAC school. It is also in the parts catalog as well as the packaging of the vacuum gauge, and in the instructions of the vacuum pump.

[BGreenHVAC]

@OneBiOzZ Remember that is the "textbook" answer. Not many techs follow this. If you are unable to reach a deep vacuum, the contaminated oil could be a factor. I have seen a coworker unable to get a deep vacuum and searched for hours for a leak. He called me to take over the job while he went to another one. I changed the oil, and I achieved a vacuum of 326 microns. I didn't leak, he just overlooked the obvious because he didn't just stop to think about it. His oil was milky (the answer).

[BGreenHVAC]

@OneBiOzZ By EPA guidelines (per section 608 refrigerant handling license) you are supposed to change the oil after every use. You should drain the oil only when the pump is warm/hot. It will take more contaminants like moisture with it. Since the oil is very hygroscopic, you should not refill the oil until you are ready to use the pump. Also, use the smaller oil containers. From the moment you break the seal the oil is absorbing water vapor from the ambient air. The oil is deteriorating

[doyengicp]

@Shujiro8855

Molecular flow is way past 40 mTorr ;) thats not a great level of vacuum actually.. even dry pumps with roots blower cant reach it.. there's always gas backstream.