SF AllVac Commercial, Установка, эксплуатация и обслуживание, Страница: 20 / 36

20 RRGA-SVX01A-EN
Calibration
The system is once again displaying the raw, uncalibrated reading from the
transducer. Once you press ENTER, it will calculate a calibration value for
this transducer and store it in memory. If you press “CANCEL”, a new
calibration factor will not be calculated. It will then display the following
message and be ready for operation:
“ALLVAC COMMERCIAL RECOVERY UNIT”
“HAS POWER (PRESS START) “
Changing Compressor Fluid
The compressor’s charge of Poly Ester fluid should be regularly replaced
with an identical fluid or, at a minimum, after any of these events:
1. After a maximum of 10 hours of run time
2. When changing recovery jobs that involve different refrigerants
3. After a recovering a system with a burnt out compressor.
To remove and change the oil in the compressor and the oil separator:
WARNING
a) Make sure AllVac unit has no refrigerant in its internal parts.
b) Connect a manifold set to dry nitrogen and to the suction and discharge
service 1/4” access ports located on the side of the AllVac.
c) Connect another 1/4” hose to the access fitting on the bottom of the AllVac
oil separator fitting and the other end to a suitable disposable oil container.
d) Gradually allow dry nitrogen to go into the discharge port on the AllVac unit
until all oil has been forced out of the oil separator. Note: 10 to 15 PSI will
be more than adequate.
e) Connect another 1/4” hose to the access fitting on the bottom of the AllVac
compressor fitting and the other end to a suitable disposable oil container.
f) Gradually allow dry nitrogen to go into the suction port on the AllVac unit
until all oil has been forced out of the compressor.
g) To add new oil to the AllVac compressor, connect a vacuum pump to the
1/4” access port on the suction side of the compressor. Pull down into a
minimum 29” vacuum.
h) Connect other hose to the 1/4” access port on the bottom of the compres-
sor and into the new oil container. Note: fill compressor with exactly 18 oz.
of oil.
i) After compressor has been filled, connect other hose to the 1/4” access
port on the bottom of the oil separator and into the new oil container. Note:
fill oil separator with exactly 16 oz. of oil.
j) Once this procedure is finished, remove all hoses and pull entire AllVac
into a 29” vacuum. Dispose of old oil properly.
ARNING
Note: Failure to follow above procedures for recharging oil in compressor
with the exact amount of oil may result in major damage to the compressor.
When changing oil, it is highly
recommended that the same type
of oil being used with the
refrigerant being recovered, be
used in the AllVac compressor.
This will help ensure that cross
contamination does not occur.
Caution:
!