Robinair 25175B REFRIGERANT RECOVERY SYSTEM - Manual (Page 11)

OPERATING YOUR 25175B
DIAGRAM FOR REFRIGERATION RECOVERY
1. Inspect the 25175B thoroughly to insure that it is
in good operating condition.
2. Make sure all connections are correct and tight
(see set-up diagram below).
3. Open the liquid port of the recovery cylinder
(always open valves slowly to check hoses and
connections for leaks).
4. Make sure the Recover/Purge valve is set on
Recover.
5. Open the output port of the 25175B
6. Open the liquid port on your manifold gauge set;
opening the liquid port will remove the liquid from
the system first, greatly reducing the recovery
time. (after the liquid has been removed, open the
manifold vapor port to finish evacuating the
system).
7. Connect your 25175B to a 115V outlet.
a. Switch the main power switch to the ON position.
You should hear the fan running.
b. Press the compressor start switch. This “momen-
tary” switch will start the compressor.
It may be necessary, under certain circumstances,
to press this switch more than once to start the
compressor.
8. Slowly open the input port on the 25175B.
a. If the compressor starts to knock, slowly throttle
back the input valve until the knocking stops.
b. If the input valve was throttled back, it should be
fully opened once the liquid has been removed
from the system (the manifold gauge set vapor
port should also be opened at this time).
9. Run until desired vacuum is achieved.
a. Close the manifold gauge sets vapor and liquid
ports.
b. Close the 25175B input port.
c. Shut off and proceed with the Self Purge
procedure on the next page.
Note: Always purge the 25175B after each use (see
Self Purge procedure on page 11). Failure to purge
the remaining refrigerant from the 25175B could
result in the acidic degradation of internal compo-
nents, ultimately causing premature failure of the unit.
PROCEDURE FOR NORMAL SYSTEM RECOVERY
THIS IS THE FASTEST METHOD FOR RECOVERING VAPOR REFRIGERANT
OPTIONALMOISTURE
SIGHTGLASS
A SCALE MUST BE USED TO AVOID
OVER FILLING THE STORAGE TANK
MANIFOLD
GAUGE
SET
SYSTEM BEING
SERVICED
LIQUID
ƽ
VAPOR LIQUID
OUTPUT
INPUT
10
First turn knob to liquid
port. When liquid is
removed, move to full
open for vapor