DeVillbiss Air Power Company SP-100-F Troubleshooting Guide download pdf (Page 14)

Belt – Replacement

SERIOUS INJURY OR DAMAGE MAY OCCUR IF

PARTS OF THE BODY OR LOOSE ITEMS GET

CAUGHT IN MOVING PARTS. NEVER OPERATE

THE UNIT WITH THE BELT GUARD REMOVED.

THE BELT GUARD SHOULD BE REMOVED ONLY

WHEN THE AIR COMPRESSOR IS UNPLUGGED.

1. Unplug the air compressor from power source.

2. Remove (one-piece) belt guard, or front of (two-

piece) belt guard as previously described.

3. Loosen the four bolts holding the motor to the

saddle.

4. Slide the motor toward the pump to remove

tension from the belt, then remove the old belt.

5. Install the new belt over the pulleys.

NOTE

The belt must be centered over the grooves on

the motor pulley and flywheel.

6. Slide the motor back into its regular position.

Belt Tension – Adjustment

1. Slide the motor back into its regular position on

thesaddle.

2. To tighten the belt, insert a large screwdriver into

the hole in the air compressor saddle located on

the belt guard side of the saddle below the motor,

and pry the stiffener plate back. Refer to

Figure 4.

Use the following procedure to inspect, clean or re-

place the check valve.

1. Unplug compressor from power source and re-

lease air pressure from the air tank.

2. Loosen the top and bottom compressor outlet tube

nuts and remove the outlet tube.

3. Unscrew the check valve (turn counterclockwise)

using a 7/8" socket or open end wrench.

4. Check that the disc in the check valve moves freely

inside the valve and that the spring holds the disc in

the upper, closed position. The check valve may be

cleaned with a solvent.

5. Apply thread sealant to the check valve threads.

6. Reinstall the check valve (turn clockwise). Do not

overtighten.

7. Replace the compressor outlet tube and tighten the

top and bottom outlet tube nuts.

Safety Valve - Inspection and

Replacement

IF THE SAFETY VALVE DOES NOT WORK PROP-

ERLY, OVER-PRESSURIZATION MAY OCCUR

CAUSING AIR TANK RUPTURE OR EXPLOSION.

DAILY PULL THE RING ON THE SAFETY VALVE TO

MAKE SURE THAT THE SAFETY VALVE OPER-

ATES FREELY. IF THE VALVE IS STUCK OR DOES

NOT OPERATE SMOOTHLY, IT MUST BE RE-

PLACED WITH THE SAME TYPE OF VALVEHAV-

ING AN IDENTICAL PRESSURE RATING.

To Remove Safety Valve:

1. Unplug the air compressor from power source.

2. Open the outlet valve and allow all air to bleed from

the tank. Monitor air tank pressure gauge as tank is

emptied.

3. When air tanks are empty, loosen nut securing

safety valve to manifold.

4. Remove safety valve from manifold.

To Install New Safety Valve:

1. Verify new safety valve is the correct pressure

rating for your air compressor.

2. Verify threads for safety valve in manifold are

clean.

3. Apply thread sealant to threads of new safety

valve.

4. Install new safety valve and hand-tighten.

5. Tighten nut to secure safety valve to manifold.

Do not overtighten.

6. Perform the Daily Start Up Checklist.

Belt - Removal and Installation

Belt Guard - Removal

1. Move the "OFF/ON-AUTO" lever to the "OFF"

position.

2. Unplug the air compressor from power source and

release all air tank pressure.

3. On one-piece belt guards, remove the two belt

guard screws on the bottom front of the unit.

4. On two-piece belt guards, remove the front of the

belt guard by disengaging the snaps. Insert a flat

bladed screwdriver at each snap location and pry

the belt guard apart.

3. Hold belt tension and securely tighten two motor

mounting bolts.

4. Measure correct belt tension. Proper tension is

achieved when a three (3) pound weight or

equivalent finger pressure is applied midway

between themotor pulley and compressor fly -

wheel causes a 1/4" deflection of the belt. Refer

to Figure 5.

Figure 4 – Belt Adjustment Points

3 Pound Force

At Midpoint

1/4 Inch

Deflection

Figure 5 – Correct Belt Tension

SERVICE INSTRUCTIONS (cont'd)

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 20

Comments to this Manuals

No comments

DeVillbiss Air Power Company SP-100-F Troubleshooting Guide Page 14

Comments to this Manuals

Related products and manuals for Air compressors DeVillbiss Air Power Company SP-100-F