MasterCool TwinTurbo 69395 Bedienungsanleitung Seite 5

Manifold
W/Sight Glass
AIR CONDITIONING
or
REFRIGERATION SYSTEM
VAPOR
LIQUID
10. Recovery is complete when inlet reading is about 380 - 510mm (about 15 - 20") of mercury vacuum. Turn inlet valve
to close position and turn power switch off. Recovery is complete.
RECOVERY SYSTEM PURGE
1. Turn off power switch. Turn inlet valve to PURGE position. Turn center valve to PURGE position. Make sure outlet valve
is in OPEN position. Start System.
2. Purge may take a few minutes as some liquid refrigerant may be in the Recovery System. The liquid must become
vapor, which may require some time.
3. Shut OFF Recovery System power switch. If system is to be used with the same refrigerant next operation, shut outlet
valve and disconnect outlet hose. If opening of Recovery System is required, disconnect outlet hose to relieve residual
pressure.
4. The inlet port has a fine screen filter. Remove inlet nut and clean or replace filter after every use. A clean filter is very
important for the proper operation of the System.
PUSH – PULL LIQUID RECOVERY METHOD (Refer to fig. 2)
Approved
Recovery
Tank
DO NOT fill tank more
than 80% of capacity!
Use Sight Glass or Manifold W/Sight Glass
When the Recovery System is started vapor from the recovery tank is compressed and sent, at high pressure, to HVAC or
refrigeration system. As pressure builds, the liquid is "pushed" out of unit into recovery tank. Vapor from recovery tank is
"pulled" out of recovery tank, compressed, and then pressurizes unit.
NOTE: Some systems may not have liquid service port. This prevents the push-pull technique from being used.
Procedure for Push-Pull technique (Connect system per fig. 2 and following instructions).
1. Connect outlet port of Recovery System to vapor port of unit to be serviced. Use hoses with automatic or manual valves
on both ends to prevent refrigerant release when disconnecting.
2. Connect liquid port on unit to be serviced to liquid port on recovery tank. Recovery tank should be on a scale that
stops flow when 80% tank capacity is reached. This connection should be made with a manifold gauge set with sight
glass to verify liquid flow. Recovery tank must have a minimum pressure rating of 38 bar (550 psi).
3. Connect vapor port of recovery tank to inlet port of Recovery System. Use hose with automatic or manual valve on both
ends.
4. Open valves on unit to be evacuated. Open valves on recovery tank.
5. On Recovery System, rotate outlet valve to "OPEN" position. Rotate center valve to "RECOVER" position. Rotate inlet
FIGURE 1
5
RECOVERY
SYSTEM
34
RESET
OFF
DO NOT fill tank more than 80% of capacity!
FIGURE 2
Recovery
System
RESET
OFF
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VAPOR
VALVE
APPROVED
RECOVERY
TANK
Air Conditioning
or
Refrigeration System
Vapor
Liquid
8. Turn on Recovery System (push
power switch "I").
9. Observe operation of system. In
rare instances "slugging " may
be apparent (loud compressor
noise or high vibration). If this
condition is apparent turn inlet
valve to LIQUID position.
System can be run with this
setting continuously. It is
suggested that operator
periodically turn inlet valve to
OPEN position and check for
proper operation of system.
Best operation of the system is
with inlet valve fully OPEN.
The push –pull liquid recovery
technique permits recovery of
large volumes of liquid refrigerant
from HVAC or refrigeration
systems. The Recovery System
pulls vapor from the recovery
cylinder and produces high
pressure vapor that is discharged
into vapor service port of system
being evacuated. The liquid
service port is connected to liquid
inlet on recovery tank.
Note: Recovery tank must be used
with a scale that shuts off refriger-
ant flow when tank reaches 80%
of its capacity.
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