Check, Test, And Start Procedures; Servicing Control Panel Components - Daikin RoofPak RPS Series Installation And Maintenance Manual

Servicing Control Panel Components

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 (IM
920) before operating or servicing.
Bond the equipment frame to the building electrical ground
through grounding terminal or other approved means.
Hazardous voltage. Can cause severe injury or death.
Disconnect electric power before servicing equipment. More
than one disconnect may be required to de-energize the unit.
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 fill out the Rooftop Equipment Warranty
Registration on page 122, and return it to Daikin Applied.
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
for instructions).
Disconnect all electric power to the unit when servicing control
panel components located behind the protective deadfront
panels. Always inspect units for multiple disconnects to
ensure all power is removed from the control panel and its
components before servicing.
IM 926-3 • ROOFPAK APPLIED SYSTEMS
DANGER
696), and operation manual
DANGER
page 115

Check, Test, and Start Procedures

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
(OM
proper voltage is connected.
5. Verify all nameplate electrical data is compatible with the
power supply.
6. Verify the phase voltage imbalance is no greater than
10%.
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
12. Verify that the evaporator 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.
96
Check, Test, and Start Procedures
Setscrews on page 111.
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