LG GVH282PAB Manual page 10

LG Electronics
3.2 Application Limit
Frequency Range
Pipe Stress
Oil Level
Protection device
Pump down
refrigerant
※ If gas charge amount of refrigerant specified is exceeded,
both parties should discuss the matter to determine compressor specification.
(accumulator volume, lubricating oil amount) and system specifications (crank case
heater, oil separator , additional accumulator, etc)
* Effective Period of This Document *
This document will be effective after LG's receipt with your authorized signature.
When design modification is approved by the customer , the current document is
unavailable.
GVH282PAB
Rated Frequency ±2%
Don't allow any force on discharge & suction pipe .
The piping stress must be less than 300㎏f/㎠ at starting and stopping.
And less than 153㎏f/㎠ at running.
It must be checked oil level by the compressor with
sight glass we supply. And oil level must be kept over
note 3.
guide line level **
Refrigeration system must has the compressor protection device like
over pressure, high temperature, sensing locked pump in the controller.
When starting & running fail by abnormal overload, controller must be
able to cut off power of compressor before motor burn out.
An earth terminal should be installed to prevent electrical accidents.
If pump down time is too long, compressor can be damaged due to
excessive temperature increase or poor lubrication.
Guideline of pump down process.
- Time : less than 30 seconds
- Suction Pressure : It should not run under below 1㎏f/㎠G.
And before closing a service valve, compressor running for more than 5
minutes is recommended.
Page 10 / 24
at any condition.
LGETH -180704-054 / Rev. 0