Check, Test, And Start Procedures - Daikin Maverick II MPS062E Installation And Maintenance Manual

Electric shock and moving machinery hazard. Can cause severe equipment
damage, personal injury, or death.
Disconnect and tag out all electrical power before servicing this equipment.
All start-up and service work must be performed only by trained, experienced
technicians familiar with the hazards of working on this type of equipment.
Read and follow this manual: "MicroTech III Applied Rooftop Unit Controller"
manual (OM 920) before operating or servicing.
Bond the equipment frame to the building electrical ground through
grounding terminal or other approved means.
All units are completely run tested at the factory to promote
proper operation in the field. Nevertheless, the following check,
test, and start procedures must be performed to properly
start the unit. To obtain full warranty coverage, complete and
sign the check, test, and start form supplied with the unit, or
complete the "Rooftop Equipment Warranty Registration" on
page 112 and return it to Daikin.
A representative of the owner or the operator of the equipment
should be present during start-up to receive instructions in the
operation, care, and maintenance of the unit. If the unit has a
factory-mounted disconnect switch, use the switch's bypass
mechanism to open the main control panel door without de-
energizing the control panel. See
Servicing Control Panel Components
Hazardous voltage. May cause severe injury or death.
Disconnect electric power before servicing equipment. More than one
disconnect may be required to de-energize the unit.
Disconnect all electric power to the unit when servicing control
panel components. Unless power is disconnected to the
unit, the components are energized. Always inspect units for
multiple disconnects to ensure all power is removed from the
control panel and its components before servicing.
Before Start-up
1. Verify that the unit is completely and properly installed
with ductwork connected.
2. Verify that all construction debris is removed, and that
the filters are clean.
3. Verify that all electrical work is complete and properly
terminated.
4. Verify that all electrical connections in the unit control
panel and compressor terminal box are tight, and that the
proper voltage is connected.
IM 991-2 • MAVERICK II ROOFTOP
WARNING
page 107 for instructions.
DANGER

Check, Test, and Start Procedures

5. Verify all nameplate electrical data is compatible with the
power supply.
6. Verify the phase voltage imbalance is no greater than 3%.
7. Verify that gas piping is complete and leak tight.
8. Verify that the shutoff cock is installed ahead of the
furnace, and that all air has been bled from the gas lines.
9. Manually rotate all fans and verify that they rotate freely.
10. Verify that the belts are tight and the sheaves are
aligned.
11. Verify that all setscrews and fasteners on the fan
assemblies are still tight. Do this by reading and following
the instructions in "Setscrews" on page
the "Maintenance" section of this manual.
12. Verify that the evaporator condensate drain is trapped
and that the drain pan is level.
13. If unit is curb mounted, verify that the curb is properly
flashed to prevent water leakage.
14. Before attempting to operate the unit, review the control
layout description to become familiar with the control
locations.
15. Review the equipment and service literature, the
sequences of operation, and the wiring diagrams to
become familiar with the functions and purposes of the
controls and devices.
16. Determine which optional controls are included with the
unit.
17. Before closing (connecting) the power disconnect
switch, open (disconnect) the following unit control circuit
switches:
a. Main Control Panel
– Turn system switch S1 to OFF.
– Electric heat units: turn switch HS1 to OFF.
b. Furnace Control Compartment
– Turn furnace switch S3 to OFF.
– Main Control Panel Switch S7 to OFF.
18. If the DAC or SCC unit does not have an optional zone
temperature sensor (ZNT1) connected to it, you may
need to change the keypad entry under Main Menu\
Commission Unit\Unit Setup\Space Sensor = from none,
Analog/Net, Digital/Net.
NOTE: If desired, you can significantly reduce all MicroTech
III internal control timers by the changing the entry
under keypad menu Main Menu\Commission Unit\
Timer Settings\Service Time = (from 0 min to X min
where X is the number of minutes you want the unit to
operate with fast timers).
68
Check, Test, and Start Procedures
98, which is in
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