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Documents & Manuals

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Tensioning Guide
Belt-diagram
C-120 pulleys
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Work Order Templates

Pre-built workflows to keep your asset running smoothly.

Daily Electrical System Inspection
Replace Roller and Pulley
Install Engine B-120
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Procedures

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Motion Industries
Applied Industrial Technologies
Electrical Brothers
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Parts

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Drive Motor
B2 Rollers
Tensioning System
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York Rooftop Unit Y14AC04C1LABAB

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Maintenance Plans for York Rooftop Unit Model Y14AC04C1LABAB

Integrate maintenance plans directly into your work orders in MaintainX.

3 Yearly Indoor Blower Motor Pipe Plugs Change

WARNING: Perform all maintenance operations on the blower motor with power disconnected from the unit. Do not attempt to lubricate bearings with the unit in operation.

Power disconnected from the unit?

Both pipe plugs at each end shell removed and cleaned out any hardened grease or foreign matter?

One plug on each end replaced with a clean grease fitting?

Grease (Chevron SRI-2 or equivalent) pumped into the bearing cavity until new grease shows at the open port using a low pressure grease gun?

WARNING: Do not over-lubricate.

Motor run for ten minutes until excess grease is purged from the cavity?

Plugs replaced?

Sign off on the blower motor pipe plugs change

Run this procedure

1 Monthly Filters Maintenance

CAUTION

Prior to any of the following maintenance procedures, shut off all power to the unit

Failure to do so could cause personal injury

Label all wires prior to disconnection when servicing controls

Wiring errors can cause improper and dangerous operation

Verify proper operation after servicing

FILTERS

Inspect once a month

Replace disposable or clean permanent type as necessary

Run this procedure

Belt Tension Adjustment

BELT TENSION

The tension on the belt should be adjusted as shown in Figure 28 and Table 31

NOTE

If the unit is equipped with power exhaust fans or a return air fan, check belt tension and adjust as necessary

CAUTION

PROCEDURE FOR ADJUSTING BELT TENSION

1. Loosen the four bolts holding the motor base to the channels

2. Adjust the belt by turning nuts "A" (see detail "B")

3. Using a belt tension checker, apply a perpendicular force to one belt at the midpoint of the span as shown

Run this procedure

Refriegeration System Check

Check if the system is fully factory charged with R-22

Verify the correct charge appears on the unit nameplate

Check the Thermal Expansion Valves

Check if the superheat on each valve is adjustable

Check the moisture/liquid sight glass

Check if a clear flow of liquid indicates the unit is properly charged

Check if any bubbles indicate the system is undercharged or noncondensables may exist

Check the color of the moisture indicator

Check the filter drier

Run this procedure

2 Monthly Indoor Blower Bearing Lubrication

Indoor Fan Motors

The indoor blower motor features ball bearings that do not require periodic lubrication

Periodic lubrication of the motor bearings can extend the life but is optional

CAUTION

Damage can occur if the bearings are over lubricated

Use grease sparingly

To go to bypass mode, the bypass VFD installed in this unit must be switched by hand on the front of the bypass enclosure in the fan cabinet of the rooftop unit

It does not automatically go to bypass mode if the drive fails

The switches on the front of the bypass box control its run mode

Run this procedure