JOHNSON CONTROLS
59
FORM 100.50-NOM6
ISSUE DATE: 8/07/2017
4
SECTION 4 – MAINTENANCE
Make sure power is removed from the unit
before performing the maintenance items
contained in this section.
GENERAL
A planned program of regularly scheduled maintenance
will return dividends by averting possible costly and
unexpected periods of down time. It is the responsibil-
ity of the owner to provide the necessary maintenance
for the air handling units and coils. If a system failure
occurs due to improper maintenance during the warran-
ty period, Johnson Controls will not be liable for costs
incurred to return the unit to satisfactory operation.
PERIODIC MAINTENANCE – MONTHLY
Filters
Check the cleanliness of the filters and replace or clean
as required.
Linkages
Examine the damper and operator linkages to insure
that each is free and operating smoothly.
Compressors
Oil Level Check:
The oil level can only be tested
when the compressor is running in stabilized condi-
tions, to ensure that there is no liquid refrigerant in the
lower shell of the compressor. When the compressor
is running in stabilized conditions, the oil level must
be between 1/4 and 3/4 in the oil sight glass. Note: at
shutdown, the oil level can fall to the bottom limit of
the oil sight glass.
Oil Analysis:
Use York Type “T” POE oil (clear) for
units charged with R-410A refrigerant. The type of re-
frigerant and amount per system is listed on the unit
rating plate. A change in the oil color or odor may be an
indication of contaminates in the refrigeration system.
If this occurs, an oil sample should be taken and ana-
lyzed. If contaminations are present, the system must
be cleaned to prevent compressor failure. This can be
accomplished through the installation of oversized suc-
tion and liquid line driers. The driers may have to be
changed several times to clean up the system depend-
ing on the degree of contamination.
Never use the scroll compressor
to pump the refrigerant system down
into a vacuum. Doing so will cause
internal arcing of the compressor
motor, which will result in failure of
compressor.
Fan Bearing Lubrication
Add grease slowly with shaft rotating until a slight
bead forms at the seals. If necessary, re-lubricate while
bearing is stationary. The fan data plate (attached to
the fan scroll) lists the type of grease that must be used
for lubricating the bearings.
Refer to Table 25 on page
Re-lubrication is generally accompanied by a tempo-
rary rise in operating temperature. Excess grease will
be purged at seals.
Recommended Lubricant for Fan Bearings
A Lithium / Petroleum base grease conforming to an
NLGI Grade II consistency is normally used. Lubri-
cant must be free of any chemical impurities such as
free acid or free alkali, dust, rust, metal particles or
abrasive. This light viscosity, low torque grease is rust
inhibited and water resistant, has a temperature range
of -30°F to +200°F with intermittent highs of +250°F.
Lubricate bearings as required by the severity of re-
quired duty.
Condenser Coils
Dirt should not be allowed to accumulate on the con-
denser coil surfaces. Cleaning should be as often as
necessary to keep coil clean.
TABLE 25 -
FAN BEARING – LUBRICATION INTERVALS
RELUBRICATION SCHEDULE (MONTHS) BALL BEARING PILLOW BLOCKS
SPEED (RPM)
500
1000
1500
2000
2500
3000
3500
4000
4500
SHAFT DIA
1/2” thru 1-11/16”
6
6
5
3
3
2
2
2
1
1-15/16” thru 2-7/16”
6
5
4
2
2
1
1/2
1/4
1/4
2-11/16” thru 2-15/16”
5
4
3
2
1
1/2
1/2
3-7/16” thru 3-15/16”
4
3
2
1
1/2
1/2
Содержание 050
Страница 112: ...JOHNSON CONTROLS 112 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE SENSOR READINGS LD13017 ...
Страница 113: ...JOHNSON CONTROLS 113 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 ECONOMIZER EXHAUST LD13018 ...
Страница 114: ...JOHNSON CONTROLS 114 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE FANS LD13019 ...
Страница 115: ...JOHNSON CONTROLS 115 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 COOLING SETUP LD13020 ...
Страница 116: ...JOHNSON CONTROLS 116 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE COOLING STATUS LD13021 ...
Страница 117: ...JOHNSON CONTROLS 117 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 HEATING SETUP LD13022 ...
Страница 118: ...JOHNSON CONTROLS 118 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE HEATING STATUS LD13023 ...
Страница 119: ...JOHNSON CONTROLS 119 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 SYSTEM OPTIONS LD13024 ...
Страница 120: ...JOHNSON CONTROLS 120 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE OUTPUTS STATUS LD13025 ...
Страница 122: ...JOHNSON CONTROLS 122 FORM 100 50 NOM6 ISSUE DATE 8 07 2017 SECTION 6 USER INTERFACE GRAPHIC LD13027 CLOCK LD13028 ...
Страница 125: ...JOHNSON CONTROLS 125 SECTION 6 USER INTERFACE FORM 100 50 NOM6 ISSUE DATE 8 07 2017 6 ALARMS LD13031 ...