Use and Care Manual

MRCOOL DC INVERTER COOLING ONLY CONDENSING UNIT
57
NOTICE:
Before replacement, make sure the nameplates and models of the compressors are identical.
NOTICE:
Make sure the lubricant is sealed inside the compressors.
(2) Prepare relevant tools
1) Prepare nitrogen. Please strictly follow the nitrogen welding standards during the welding process.
Make sure there is sufficient nitrogen. The nitrogen pressure should be above 2.0MPa;
2) Prepare welding rods. Prepare some welding rods of common specifications and some special
welding rods that contain more than 5% silver. They are used to weld the compressor. The suction
and exhaust openings of the compressor are all connected to copper-plated steel pipes, so we
need to use special welding rods and solder;
3) Prepare applicable welding tools. Please evaluate how much oxygen and acetylene should be used
according to the current welding condition. Try to avoid repeated welding.
4) Prepare a complete set of tools, including an internal hexagonal wrench, diagonal pliers, pincer
pliers, nipper pliers, a universal meter, a pressure gauge, cross screwdriver, straight screwdriver,
more than two wrenches, insulating tape and wire cables.
Make sure the electric box cover of
the compressor is in good condition.