Daewoo frs20 manual To the low pressure side, Close valve ①, An evacuated bombe, Be sure to charge

Items		Precautions
	* Pipe Connection
3.Vacuum degassing.	Connect a red hose to the high pressure side and a blue hose
	to the low pressure side.
	* Vacuum Sequence
	Open ①,② valves and evacuate for 40 minutes.
	Close valve ①.	Evaporator
	Compressor	Hot Pipe
		Condenser	Dryer
	Low		High
	Pressure
			Pressure
			①
		Vaccum
		Pump
		Blue

Yellow

②

※ KEYPOINTING

Red

1) If power is applied during vacuum degassing, vacuum degassing shall be more effective.

2) Operate compressor while charging refrigerant. (It is easier and more certain to do like this.)

* Charging sequence

4.Refrigerant charging.	1)	Check the amount of refrigerant supplied to each model after
	completing vacuum degassing.
	2) Evacuate bombe with a vacuum pump.
	3) Measure the amount of refrigerant charged.
	- Measure the weight of an evacuated bombe with an electronic scale.
	- Charge refrigerant into a bombe and measure the weight. Calculate
		the weight of refrigerant charged into the bombe by subtracting the
		weight of an evacuated bombe.
			Indicate the weight of	※ KEYPOINTING
			an evacuated bombe
				1) Be sure to charge
				the refrigerant at
				around 25°C.
				2) Be sure to keep
				-5g in the winter
				and +5g in summer.

Calculation of amount of refrigerant charged

the amount of refrigerant charged = a weight after charging

- a weight before charging

(a weight of an evacuated cylinder)

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