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JOHNSON CONTROLS
16
FORM 50.40-OM1 (713)
ISSUE DATE: 07/17/2013
SECTION 2 - OPERATION
Set the valves and pumps as shown in the first column
of
. Start the RSR unit by switch-
ing the toggle switch on the control box to the ON po-
sition.
When the RSR unit is started, the compressor reduces
the pressure in the storage vessel. The discharge side
of the compressor pressurizes the refrigeration unit
through the connection to the condenser. The resulting
pressure differ ential forces the liquid refrigerant from
the refrigeration unit into the RSR storage vessel.
The transfer of liquid is complete when the level in
the RSR storage vessel, as observed through the sight
glasses, ceases to rise. Close valve 5 and move the
RSR toggle switch to the OFF position. Proceed to the
Gas Pump Out.
TABLE 6 -
OPERATION SETTINGS
CONTROL
1
2
3
4
5
TO REMOVE
LIQUID
FROM CHILLER
TO REMOVE
GAS FROM
CHILLER
TO REMOVE
OIL FROM
RERIGERANT
TO RECHARGE CHILLER
STEP 1 – GAS
OFF
STEP 2 – LIQUID
CHARGE
RSR SYSTEM
Valve 1
Open
Closed
Open
Open
1 & 4
or
2 & 3
Closed
Valve 2
Closed
Open
Closed
Open
Valve 3
Open
Closed
Open
Closed
Valve 4
Closed
Open
Closed
Open
Valve 5
Open
Closed
Closed
Closed
Open
Compressor
On
On
On
Off
On
Water to
Condenser
Off
On
Off
Off
On
Heater
Off
Off
On
Off
On
CHILLER/AIR
CONDITIONER
Valve 6
Open
Closed
Closed
Closed
Open
Valve 7
Open
Open
Open
Open
Open
Chiller
Water Pump
Off
On
On
Either
One
On
On
Condenser
Water Pump
Off
Off
On
On
On
When first starting the vacuum pump on a
low pres sure system, the suction valve on
the pump should remain closed until the
pump comes up to operating temperature.
If refrigerant vapor is pumped through
the pump before the pump is warmed up,
a large quantity of refrigerant will dis
solve in the oil. The dissolved refrigerant
will superheat and boil off violently as
the pump approaches its operating tem
perature. Excessive oil loss will result.
Intake valve should be opened gradually
to prevent sudden refrigerant rush to the
pump and loss of oil from the pump.
The vacuum pump should never be exposed to a dis-
charge pressure higher then 30 PSIG.
Содержание YORK EASYTANK LD17584
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