Carrier PrimeLINE 69NT40-561-200, Руководство по эксплуатации и обслуживанию

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7–27 T-362
7.19.2 Installing an EEV
1. Install the valve and a new strainer with the cone of the strainer / screen pointing into the liquid line at the
inlet to the valve.
2. During installation, make sure the EEV coil is snapped down fully, and the coil retention tab is properly
seated in one of the valve body dimples. Also, ensure that coil boot is properly fitted over valve body. See
Figure 7.13 .
3. Replace the filter drier.
4. Evacuate to 500 microns by placing the vacuum pump on the liquid line and suction service valve.
5. Open the liquid line service valve and check refrigerant level.
6. Check superheat. See
Section 3.2 .
7. Check unit operation by running a pre-trip. See Section 4.6 .
7.20 Humidity Sensor (HS)
The humidity sensor is an optional component that allows setting of a humidity set point in the controller. In
dehumidification mode, the controller will operate to reduce internal container moisture level. When the sensor is
disabled, it will be added as an event in the DataLINE report.
7.20.1 Disabling the Humidity Sensor
If a humidity sensor fails and is not going to be replaced, the sensor operation can be disabled at the unit display.
Once disabled, any related alarms will be masked and PTI tests will be skipped.
1. Press the CODE SELECT key.
2. Use the Arrow keys until Cd33 is displayed and then press the ENTER key.
3. Use the Arrow keys to select “diSbl” and press ENTER. This sets the configuration variable C n F04 to OFF.
4. It is recommended to unplug the humidity sensor from the unit (capping off the sensor plug). This is
essential as the humidity sensor shares the power source with other components.
7.20.2 Checking the Operation of the Humidity Sensor (HS)
This procedure is to be performed in an effort to ease the troubleshooting of the humidity sensor. When performing
this procedure and while working on the unit, always follow the proper lockout/tagout procedures.
Items Required:
• One 7/16” socket wrench or nut driver.
• One 1/4” socket wrench or nut driver.
• One clean, clear water bottle with a minimum 6 cm (2.5 in) opening and capacity to hold 500 ml (16.9 oz).
• 100 ml (3.4 oz) of fresh water - distilled if available.
• 50 gm of Salt (NaCl).
Procedure:
1. Remove the left Upper Fresh Air Makeup Vent panel.
2. Remove the humidity sensor from the mounting hardware and bring to the front of the access panel.
3. Disconnect the humidity sensor from the harness.
4. Drill a 3 cm (1.25 in) hole in the cap of a bottle.
5. Pour approximately 100 ml (3.4 oz) of water into the empty clean bottle.
6. Add salt to the water until it is present at the bottom of the bottle.
7. Cap the bottle and tape over the drilled hole.
8. Shake the bottle until the salt dissolves and water is saturated.
NOTE
To ensure saturation, add additional salt until it settles at the bottom without dissolving while shaking.