Pre-Start-Up/Start-Up - Carrier 50FC 08-16 Series Service And Maintenance Instructions

Checkout Tests
Use the Checkout menu (see page 53) to test the damper operation
and any configured outputs. Only items that are configured are
shown in the Checkout menu.
NOTE: For information about menu navigation and use of the
keypad see Interface Overview on page 49.
To perform a Checkout test:
1. Scroll to the desired test in the Checkout menu using the ▲
and ▼ buttons.
2. Press the (Enter) button to select the item. RUN?
appears.
3. Press the (Enter) button to start the test. The unit pauses
and then displays IN PROGRESS. When the test is complete,
DONE appears.
4. When all desired parameters have been tested, press the
(Menu Up/Exit) button to end the test.
The Checkout tests can all be performed at the time of installation
or at any time during the operation of the system as a test that the
system is operable.
CAUTION
Failure to follow this caution may result in damage to
equipment. Be sure to allow enough time for compressor
startup and shutdown between checkout tests so that you do
not short-cycle the compressors.
TROUBLESHOOTING
Alarms
The economizer module provides alarm messages that display on
the 2-line LCD.
NOTE: Upon power up, the module waits 60 minutes before
checking for alarms. This allows time for all the configured
devices (e.g., sensors, actuator) to become operational. The excep-
tion is the SAT sensor which will alarm immediately.
If one or more alarms are present and there has been no keypad ac-
tivity for at least 5 minutes, the Alarms menu displays and cycles
through the active alarms.
You can also navigate to the Alarms menu at any time.
Clearing Alarms
Once the alarm has been identified and the cause has been re-
moved (e.g., replaced faulty sensor) the alarm can be cleared from
the display.
To clear an alarm, perform the following:
1. Navigate to the desired alarm.
2. Press the (Enter) button. ERASE? displays.
3. Press the (Enter) button. ALARM ERASED displays.
4. Press the (Menu Up/Exit) button to complete the action
and return to the previous menu.
NOTE: If the alarm still exists after clearing it, it is redisplayed
within 5 seconds.

PRE-START-UP/START-UP

PERSONAL INJURY HAZARD
Failure to follow this warning could result in personal injury or
death.
Follow recognized safety practices and wear approved
Personal Protective Equipment (PPE), including safety glasses
and gloves when checking or servicing refrigerant system.
Do not use a torch to remove any component. System contains
oil and refrigerant under pressure. To remove a component,
wear PPE and proceed as follows:
Shut off all electrical power to unit. Apply applicable
lockout/tag-out procedures.
Recover refrigerant to relieve all pressure from system using
both high-pressure and low pressure ports.
Do not use a torch. Cut component connection tubing with
tubing cutter and remove component from unit.
Carefully un-sweat remaining tubing stubs when necessary. Oil
can ignite when exposed to torch flame.
Do not operate compressor or provide any electric power to
unit unless compressor terminal cover is in place and secured.
Do not remove compressor terminal cover until all electrical
power is disconnected and approved lockout/tag-out
procedures are in place.
Relieve all pressure from system before touching or disturbing
anything inside terminal box whenever refrigerant leak is
suspected around compressor terminals.
Never attempt to repair a soldered connection while refrigerant
system is under pressure.
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or
death.
The unit must be electrically grounded in accordance with
local codes and NEC ANSI/NFPA 70 (American National
Standards Institute/National Fire Protection Association).
57
WARNING
WARNING