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TM 55-8145-221-14&P
Change 1
0017 00-10
REFRIGERATED CONTAINER SYSTEM
SERVICE UPON RECEIPT – Continued
0017 00
REFRIGERATION UNIT PREPARATION – Continued.
7.
Open control box cover (1, Figure 8) and secure open with door holder clips.
8.
Adjust refrigeration unit controls follows:
a.
Remove six screws (2). Open the control box panel (3).
NOTE
The defrost timer controls are marked T1 and T2. Control T1 adjusts the length of
time the Refrigeration Unit will operate continuously before initiating a defrost
cycle. Control T2 adjust the maximum length of time the Refrigeration Unit will
remain in the defrost cycle.
The time scales indicate an approximate percentage of time based on 24 hours. For
example, to set the time for 6 hours, adjust the control to 25% (6 hours is 25% of 24
hours).
The time controls have a minimum setting of 14 minutes when set at 0%.
b.
Adjust the defrost timer (4) control T1 to approximately 25% (6 hours) and control T2 to approximately 2% (30
minutes). This is the recommended factory setting, however, the controls can be set as desired to best suit the
operating conditions.
c.
Adjust dual pressure control switch (5) HIGH PRESSURE CUTOUT to 305, low pressure CUT IN to 0, and
low pressure CUTOUT to 15 IN VAC.
d.
Close the control box panel (3). Install six screws (2).
e.
Close and secure the control box cover (1).
9.
Service, start, and operate Refrigeration Container System (WP 0006 00).
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