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WARNING
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 Unit Controller”
(OM 920) before operating or servicing.
Bond the equipment frame to the building electrical ground
through grounding terminal or other approved means.
WARNING
Hazardous voltage . May cause severe injury or death .
Disconnect electric power before servicing equipment.
Pre-Start of Unit
All units are completely run tested at the factory to promote
proper operation in the field. However, to ensure proper
operation once the unit is installed, 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 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 ma enance of the unit.
Servicing Control Panel
Components
Before Start-Up
1 .
Remove shipping bolt form fan spring.
2 .
Verify that the unit is completely and properly installed
with ductwork connected.
3 .
Verify that all construction debris is removed, and that
the filters are clean.
4 .
Verify that all electrical work is complete and properly
terminated .
5 .
Verify that all electrical connections in the unit control
panel are tight, and that the proper voltage is connected.
6 .
Verify all nameplate electrical data is compatible with the
power supply.
7 .
Verify the phase voltage imbalance is no greater than 2%.
8 .
Verify that gas piping is complete and leak tight.
9 .
Verify that the shutoff cock is installed ahead of the
furnace, and that all air has been bled from the gas lines.
10 .
Verify installation of gas flue and outside air vents.
11 .
Manually rotate all fans and verify that they rotate freely.
12 .
Verify that the belts are tight and the sheaves are aligned.
13 .
Verify that all setscrews and fasteners on the fan
assemblies are still tight. See
.
14 .
Verify that the evaporator condensate drain is trapped
and that the drain pan is level.
15 .
If unit is curb mounted, verify that the curb is properly
flashed to prevent water leakage.
16 .
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.
17 .
Determine which optional controls are included with the
unit .
18 .
Inspect the outside and inside of the unit for any signs
of damage or rough handling. Excessive air leakage
would be one possible, unacceptable consequence.
If any problems are found, contact the local Daikin
representative for instructions.
IM 1058-8 • MAVERICK II ROOFTOP SYSTEMS
92
www.DaikinApplied.com
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