Maintenance
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IM 991-2 • MAVERICK II ROOFTOP
Maintenance
DANGER
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.
WARNING
Moving machinery and electrical power hazards. May cause severe
personal injury or death.
Disconnect and lock off all power before servicing equipment.
CAUTION
Sharp edges are inherent to sheet metal parts, screws, clips, and similar
items. May cause personal injury. Exercise caution when servicing
equipment.
NOTICE
Installation and maintenance must be performed only by qualified personnel
who are experienced with this type of equipment and familiar with local
codes and regulations.
Servicing Control Panel
Components
Disconnect all electric power to the unit when servicing control
panel components. Before servicing, always inspect units for
multiple disconnects to ensure all power is removed from the
control panel and its components.
Planned Maintenance
Preventive maintenance is the best way to avoid unnecessary
expense and inconvenience. Have this system inspected at
regular intervals by a qualified service technician. The required
frequency of inspections depends upon the total operating time
and the indoor and outdoor environmental conditions. Routine
maintenance should cover the following items:
•
Tighten all belts, wire connections, and setscrews.
•
Clean the evaporator and condenser coils mechanically
or with cold water, if necessary. Usually any fouling is
only matted on the entering air face of the coil and can be
removed by brushing.
•
Lubricate the motor and fan shaft bearings.
• Align or replace the belts as needed.
•
Clean or replace the filters as needed.
•
Check each circuit’s refrigerant sightglass when the
circuit is operating under steady-state, full load conditions
at or above 70° ambient. The sightglass should then be
full and clear. If it is not, check for refrigerant leaks.
NOTE:
A partially full sight glass is not uncommon at part
load conditions. Do not use each circuit’s refrigerant
sightglass to indicate proper charge. Sightglasses are
to be used for moisture indication only.
•
Check for proper superheat.
•
Check for proper subcooling.
•
Check for blockage of the condensate drain. Clean the
condensate pan as needed.
• Check the power and control voltages.
•
Check the running amperage of all motors.
• Check all operating temperatures and pressures.
•
Check and adjust all temperature and pressure controls
as needed.
•
Check and adjust all damper linkages as needed.
•
Check the operation of all safety controls.
•
Examine the gas furnace (see
or
).
•
Check the condenser fans and tighten their setscrews.
• Lubricate the door latch mechanisms.
Содержание Maverick II MPS062E
Страница 45: ...Wiring Diagrams www DaikinApplied com 45 IM 991 2 MAVERICK II ROOFTOP Figure 45 MPS 070 Condensing Unit Power...
Страница 46: ...IM 991 2 MAVERICK II ROOFTOP 46 www DaikinApplied com Wiring Diagrams Figure 46 VFD Control...
Страница 47: ...Wiring Diagrams www DaikinApplied com 47 IM 991 2 MAVERICK II ROOFTOP Figure 47 VAV Control Inputs...
Страница 48: ...IM 991 2 MAVERICK II ROOFTOP 48 www DaikinApplied com Wiring Diagrams Figure 47 continued VAV Control Inputs...
Страница 49: ...Wiring Diagrams www DaikinApplied com 49 IM 991 2 MAVERICK II ROOFTOP Figure 48 Gas Burner Control...
Страница 50: ...IM 991 2 MAVERICK II ROOFTOP 50 www DaikinApplied com Wiring Diagrams Figure 48 continued Gas Burner Control...
Страница 51: ...Wiring Diagrams www DaikinApplied com 51 IM 991 2 MAVERICK II ROOFTOP Figure 49 Electric Heat Control...
Страница 52: ...IM 991 2 MAVERICK II ROOFTOP 52 www DaikinApplied com Wiring Diagrams Figure 49 continued Electric Heat Control...
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