MovinCool Climate Pro 18 Service Manual - Manual (Page 30)

Operation Section
30
(4) Compressor lubrication
•The lubrication system is comprised of a hollow
shaft, an oil scraper mounted at the end face,
hollow shaft, a shaft journal (shaft bearing),
and the lubrication groove for the shaft journal.
The lubrication groove is wider than the oil
hole. When the shaft turns, oil is scraped
upward by the oil scraper along the inside
diameter of the hollow shaft. The oil is fed
through the oil hole by centrifugal force, then
supplied to the lubrication groove for each
shaft journal, lubricating the bearing. In this
lubrication system, oil enters into each bearing
separately and returns to the oil reservoir. This
system effectively prevents bearing
temperature increases, and offers high
reliability. In addition, the specially treated
shaft journal keeps the bearing from being damaged during high temperature operation.
4.3 Outdoor Heat Exchanger
• The outdoor heat exchanger coil uses copper tubes that are covered with the thin aluminum
protections called plate fins. In cool mode, heat is given off and absorbed by air being pulled
across these fins by the centrifugal fan, and then expelled through the exhaust hot air outlet. In
heat mode, this heat exchanger coil becomes heat absorption coil, and then cool air is expelled
through the exhaust cool air outlet.
4.4 Indoor Heat Exchanger
• The indoor heat exchanger coil is covered with plate fins. In cool mode, heat is removed from
the air being pulled across the indoor heat exchanger by the centrifugal fan and the resulting
cool air is expelled through the cool air outlet grill. In heat mode, this heat exchanger becomes
heat rejection coil, and then hot air is expelled through the hot air outlet grill.
I001680
Oil Feed Groove
Oil Hole Oil Scrapper
Roller
Rotor
Cylinder
Hollow Shaft
Eccentric Shaft