5–3
T-372
Figure 5.2 Upper Fresh Air Make Up Flow Chart
5.3.2
Vent Position Sensor
The vent position sensor (VPS) allows the user to determine the position of the fresh air vent via Cd45. This func
-
tion code is accessible via the CODE SELECT key.
The vent position will display for 30 seconds whenever motion corresponding to 5 CMH (3 CFM) or greater is
detected. It will scroll in intervals of 5 CMH (3 CFM). Scrolling to Cd45 will display the fresh air vent position.
The position of the vent will be recorded in the DataCORDER whenever the unit is running under AC power and
during any of the following conditions:
• Trip start
• Every power cycle
• Midnight
• Manual changes greater than 5 CMH (3 CFM) remaining in the new position for at least four minutes
NOTE
The user has four minutes to make necessary adjustments to the vent setting. This time calculation
begins on the initial movement of the sensor. The vent can be moved to any position within the four min
-
utes. On completion of the first four minutes, the vent is required to remain stable for the next four min
-
utes. If vent position changes are detected during the four-minute stability period, AL250 will be
generated. This provides the user with the ability to change the vent setting without generating multiple
events in the DataCORDER.
5.4 EverFRESH Operation
Procedures and technical information related to the EverFRESH controlled atmosphere system can be found in the
, located in the Literature section of the Container Refrigeration website. To find the
manual from the Literature section, click on Options > EverFRESH.
5.5 Connect Water-Cooled Condenser
The water-cooled condenser is used when cooling water is available and heating the surrounding air is objection
-
able, such as in a ship’s hold. If water-cooled operation is desired, connect in accordance with the following sub
-
paragraphs.
0
50
100
150
200
250
0
10
20
30
40
50
60
70
80
90
100
TBAR
1 1/2”
TBAR
2 5/8”
TBAR 3”
AIR
FLOW
(CMH)
50HZ
PERCENT OPEN
0
50
100
150
200
250
300
0
10
20
30
40
50
60
70
80
90
100
TBAR
1 1/2”
TBAR
2 5/8”
TBAR 3”
AIR
FLOW
(CMH)
60HZ
PERCENT OPEN
