REFCO ENVIRO - Manual (Page 16)

English Instruction Manual ENVIRO
13
The input value of the refrigerant tank is closed —
open the valve to solve the problem. a.
The connecting hose between the recovery unit and
refrigerant tank is stuck — close all the valves and
replace the connecting hose. b.
The temperature of the refrigerant tank is too high,
pressures is too high — give it some time to cool down
and the pressure will come back to normal. c.
An electric scale needs to be used together with the re-
covery unit to monitor the recover process. 6.
In order to gain maximum recovery speed, a hose with
inner diameter bigger than 4mm is recommended and
the hose should be shorter than 1.5m. 7.
While recovering large amounts of liquid, use the
Push/Pull Mode. 8.
After recovering, make sure there is no refrigerant left
in the unit. Read the Purge Operation carefully. Liquid
refrigerant remaining in the unit may be expanded and
damage the components. 9.
If the unit is to be stored or not used for any length of
time, we recommend that it be completely evacuated of
any residual refrigerant and purged with dry nitrogen. 10.
Connection hose with check valve is recommended, it
can prevent refrigerant loss. 11.
The intake port is equipped with filter screen; please
wash it frequently to keep it clean. 12.