Thermo King 098916, Руководство по обслуживанию

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Refrigeration Maintenance
131
Gauge Manifold Set Installation
& Removal
Thermo King recommends the use of access
valves or self-sealing, quick disconnect fittings.
This limits the loss of refrigerant into the
atmosphere. A separate gauge manifold set with
low loss fittings (refer to Tool Catalog) should be
dedicated for use with R-404A only. Gauge hoses
should also be dedicated to R-404A.
NOTE: Carefully check to ensure that access
connections are functioning properly when any
of these devices are used.
Gauge Manifold Set Installation
The following procedure purges the gauge
hoses.The procedure must be followed when
using new gauges or hoses for the first time. The
system should be operating on Cool (10 psig
[69 kPa] or greater suction pressure) when using
this procedure to purge the low side hose. Gauge
hoses may be removed and re-installed without
additional purging so long as a slight positive
pressure remains in the manifold and lines.
1. Inspect gauge manifold for proper hose and
fitting connections.
2. Clean dirt and moisture from around service
ports.
1. Quick Disconnect Access Valve
2. Discharge Service Valve (DSV)
3. Suction Service Valve (SSV)
4. Reclaimer
5. In
6. Out
Figure 79: Removing Refrigerant
1. Close Hand Valves
Figure 80: Gauge Manifold Closed to Center Port
1. Open Hand Valves
Figure 81: Gauge Manifold Open to Center Port
AXA0242
AXA0181
AXA0182
1. Quick Disconnect Access Valve
2. Discharge Service Valve (DSV)
3. Suction Service Valve (SSV)
Figure 82: Charging the System
AXA0243