JRE-Series
R e v. : A u g u s t 1 9 , 2 0 2 0
T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
I n s t a l l a t i o n , O p e r a t i o n , M a i n t e n a n c e
41
Preventive Maintenance
Fan Motors:
Lubricate fan motors annually. All
Johnson Controls Rooftop Units are fully lubricated at the
factory. Do not oil during installation.
Conduct Amperage checks annually. Amp draw should
not exceed normal full load or rated load amps by
more than 10 percent of the values noted on the unit
nameplate. Maintain a log of Amperage values to detect
deterioration prior to component failure.
Unit Inspection:
Visually inspect the unit annually. Pay
special attention to hose assemblies. Repair any leaks and
replace deteriorated hoses immediately.
Compressor:
Conduct an Amperage check on the
compressor(s) annually. Amp draw should not exceed
normal full load or rated load amps by more than 10
percent of the values noted on the unit nameplate.
Maintain a log of Amperage values to detect deterioration
prior to component failure.
Maintenance Procedures:
Perform the maintenance
procedures outlined below periodically as indicated.
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WARNING!
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WARNING!
To prevent injury or death due to electrical shock
or contact with moving parts, open unit disconnect switch
before servicing unit.
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CAUTION!
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CAUTION!
To avoid fouled machinery and extensive unit
cleanup, do not operate units without filters in place. Do
not use equipment as a temporary heat source during
construction.
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WARNING!
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WARNING!
When replacing the compressor contactor or
lockout controls, use only Johnson Controls replacement parts.
Substitution of other components may result in an inoperative
safety circuit and may cause a hazardous condition.
Filters:
Inspect filters. Establish a regular maintenance
schedule. Clean filter and maintenance frequently
depending upon need. To remove the filter from a Rooftop
Unit, slide the filter out of its frame located in the return
air opening. When reinstalling the filter, use the slide-in
rails of the filter frame to guide the filter into the proper
position. Verify that the airflow arrow found on the top of
each filter points toward the unit. Always replace filters
with the same size and quantity of filters as removed from
the unit.
Condensate Pans:
Check condensate drain pans for
algae growth every three months. If algae growth is
apparent, consult a water treatment specialist for proper
chemical treatment. The application of an algaecide every
three months will typically eliminate algae problems in
most locations.
Air Coil:
Inspect the air coil annually for dirt accumulation.
Clean coil as needed using a spray-on foaming coil cleaner.
Rinse with clean water. Brushing coils should be avoided to
avoid damage to coil fins.
