Thermo King 098916, Maintenance Manual

Page: 116 / 196

115
Controller Maintenance
Flash Loading Controller
Software
Controller software must be flash loaded when
software has been revised. To flash load software
complete the following steps:
1. Turn the
U
NIT
O
N
/O
FF
switch
O
FF
.
2. Plug cable from a portable computer with
controller software into the data retrieval
connector on the control box.
3. Press and hold the
7
key and
F1
key at the
same time. LCD display will show
[FLASHLOAD].
4. Press one of the special functions keys to
activate controller LCD display on battery
power; or turn the
U
NIT
O
N
/O
FF
switch O
N
.
NOTE: Controller will start in Emergency mode
and LCD display will show “EMERGENCY
MODE” if the communications cable is defective
or not connected to the download port. Secure
cable connection to proceed with flash loading
of software.
5. Start flash load program on portable computer.
6. Flash loading of new software is complete
when [FLASH LOADING] clears from the
LCD display.
7. The controller then checks the new software
and loads the new control program into
memory.
NOTE: If the flash load procedure is interrupted
or fails on a MP3000a, the controller will stay in
the flash mode until correctly flash loaded.
If the flash load procedure is interrupted or fails
on a MP3000, the controller will continue to use
the previous control program.
NOTE: Installing new software does not change
any configuration settings or the setpoint setting,
or erase the data log currently stored in the
controller.
Controller Replacement
1. Turn the U
NIT
O
N
/O
FF
switch O
FF
.
2. Turn the unit 460/380V main circuit breaker
off.
3. Disconnect the unit power cord from the
power supply.
4. Disconnect battery power connection from the
controller (top plug on the controller).
5. Disconnect the communication cables from
the controller and remote monitoring modem.
6. Remove the screws that secure the remote
monitoring modem to the controller.
7. Remove the screws that secure the controller
to the inside of the control box door.
8. Remove the controller from the door.
9. Install the replacement controller in the door
using the existing hardware.
10. Connect the keyboard cable to the controller.
11. Install the remote monitoring modem on the
back of the controller.
12. Connect the communication cables to the
remote monitoring modem and controller.
WARNING: The unit will automatically
start and operate if 460/380V power is
present at the main relay board when the
controller is disconnected. Disconnect the
supply power to the unit before replacing
the controller to prevent personal injury
from rotating machinery or dangerous
electrical shock from high voltage
controls.