Zanotti Zer0 120, Руководство по ремонту

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Manifold gauge/hose set with self-sealing hoses is
required for service of models covered within this
manual.
4.2.1 Manifold Gauge Components
1. Compound gauge or Low side gauge
2. High side gauge
3. Gauge manifold
4. Low side hose
5. High side house
6. Service hose
7. Low side valve
8. High side valve
9. Low loss fitting
NOTE : low loss fittings are required for service of units
with Schrader valve ports.
4.2.2 Preparing Manifold Gauges for use
1. Front-seat both valves on gauge
manifold
2. Check for any wear of the hoses and
rubber O-rings seals.
3. Ensure that each gauge is reading
properly at atmospheric pressure (If it is
not. Adjust)
4.2.3 Connecting Manifold Gauges
To connect the manifold gauge/hose set for reading
pressures, do the following:
1. Connect low side service hose fitting to
the suction access port.
2. Turn the service fitting knob clockwise,
which will press on the Schrader valve
and open up the system to the gauge
manifold.
3. Repeat the procedure to connect the
other side of the gauge set to the
discharge access port.
4.2.4 Removing the Manifold Gauge Set
1. While the compressor is still ON, with Low
Loss fittings, Remove the discharge hose
service fitting.
2. Mid-seat both hand valves on the manifold
gauge set and allow the pressure in the
manifold gauge set to be drawn down to
low side pressure and equalize. This returns
any liquid that may be in the high side hose
to the system.
3. Remove Low side service fitting.
4. Install both access valve caps. (Finger tight
only)
4.3 REMOVING THE REFRIGERANT CHARGE
Once the system is open, it must be evacuated and
dehydrated. See section 4.5
Connect a refrigerant recovery system to the suction and
discharge access valves to remove refrigerant charge.
Refer to instructions provided by the manufacturer of the
refrigerant recovery system.
Figure 11 - Refrigeration Gauge Components