Refrigerant charging tutorial for R290 heat pump

Refrigerant charging tutorial for POWERWORLD R290 heat pump
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Power World Machinery Equipment Co., Ltd.
Web: www.powerworld...
Phone: [phone]
Email: [e-mail]
Address: No.32 Luxi 2nd Road, Xixi Street, Liaobu Town, Dongguan, China.

[@averyalexander2303]

Two problems. Number one, at 0:57, never disconnect your hose from the service port while it's under a vacuum because the Schrader valve won't hold a vacuum and you will suck a bunch of air into the system, so a valve must be used. Number two, you must purge your charging hose before charging the system to push the air out of it so it doesn't go into the system.