Operating instructions

Dole – Drivers Reference Manual
Page 42
 Supply – Yellow LED: Energized when the supply temperature and set point are
displayed.
 Return – Yellow LED: Energized when return temperature and set point are
displayed.
Procedures for commonly performed control functions using the key pad module are as
follows:
 Changing Set Point: Press the ARROW UP or ARROW Down key to obtain desired
set point. Press ENTER key within five seconds. Set point will be displayed in the left
window of the display module. Controlling temperatures will be displayed in the right
window.
 Displaying Supply/Return Temperatures: Press supply/return key to show non-
controlling sensor.
 Change Defrost Interval: Press defrost interval key and then enter key. Arrow up or
down to obtain desired defrost interval. Defrost may be set at intervals of 3, 6, 9, 12
and 24 hours. After desired interval is obtained, press ENTER key within five
seconds.
 Defrosting the Unit: The unit is defrosted by pushing the MD (Manual Defrost)
switch to the UP position. This switch is located just below the key pad to the left of
the ON/OFF switch.
 Controller Alarms: The controller alarm system for the Micro-Link-2 and Micro-
Link-2i are very similar to that of the Micro-Link-1 controller explained in section
4.4.5 above.
When an alarm occurs: The red alarm will illuminate for the “20 series alarm
codes” only. If a detectable problem is found to exist, its alarm code will be
alternately displayed with the set point on the left display. The user should scroll
through the alarm list to determine what alarms exist or have existed. Alarms must be
diagnosed and corrected before the alarm list can be cleared.
To display alarm codes: The alarm list stores up to 16 alarms in the sequence in
which they occurred. The user may scroll through the list by depressing the UP arrow
key. Depressing the DOWN arrow key allows the user to scroll back through the list.
The left display will show: “AL#” where # is the alarm number sequentially in the
queue.
The right display will show: “AAXX” for an active alarm where XX is the alarm
code. “IAXX” for an inactive alarm where XX is the alarm code.
NOTE: Alarm code descriptions are posted on the front of the reefer unit.