Ingersoll Rand ZA Serie Manual Del Usuario página 5

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Operational Adjustments
• Prior to performing operational adjustments or servicing make sure air supply
is off and wire rope is slack.
1. Connect regulator to balancer.
2. Rotate regulator adjustment knob counterclockwise until it stops.
3. Turn on main air supply. Adjust regulator to required air pressure.
4. Rotate adjustment knob clockwise slowly until wire rope begins to raise, move to
the full up position. (Ensure the Z-Brake does not engage - 150 lb. (68 kg) units
only).
5. Install load hook and tooling or fixture to wire rope in the required position. Refer
to "Lash Up" Section on page 6.
6. Rotate adjustment knob clockwise until load is suspended.
7. The correct setting will require equal effort to lift and lower the load.
8. If unit is required to raise the load out of the way, turn adjustment knob clockwise
until desired speed is achieved.
9. Tighten jam nut just above adjustment knob to maintain proper setting.
n Series BA Z-Servo Control
200, 350 and 500 lb. (90, 158 and 227 kg) Capacity
Refer to Dwg. MHP1909 in the Parts Information Manual.
n Z-Servo Installation
Refer to Dwg. MHP1354 on page 11, A. Adjusting Ring; B. Air Exhaust; C. Wire Rope.
Mount balancer on overhead suspension, with wire rope fully extended. Determine
proper wire rope location for Z-Servo, refer to "Load Hook Lash Up" Section
on page 6. Attach Z-Servo valve to wire rope.
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Regulator Installation
Refer to Dwg. MHP1909 in the Parts Information Manual.
Place balancer on a clean, sturdy work surface with end cap upright. Pull out wire
rope until reel bottoms out. Remove BA control kit from package, check to ensure
that O-ring is in correct position on back of EA regulator (2). Install regulator on end
cap with four mounting screws and lockwashers (3, 4 and 5).
Control kit is supplied with a coil hose assembly (6). Connect coil hose to "A" port
of regulator.
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Operational Adjustments
Refer to Dwg. MHP1909 in the Parts Information Manual.
• Prior to performing operational adjustment or servicing make sure air supply
is off and wire rope is slack.
• A minimum of 70 psi (4.8 bar) is required to operate the regulator.
1. Install regulator to balancer.
2. Install Z-Servo as close to but below the ball stop.
3. Rotate regulator adjustment knob counterclockwise until 1/2 in. (13 mm) of
thread is visible.
4. Rotate trim valve clockwise until snug, then counterclockwise 2 full turns.
5. Rotate auxiliary flow valve clockwise until snug.
6. Turn on main air supply. Adjust regulator to required air pressure.
7. Rotate adjustment knob clockwise slowly until wire rope begins to raise, move to
the full up position, ensure Z-Brake does not engage.
• Auxiliary flow valve is fully open when 1/8 in. (3.2 mm) of screw head
protrudes from regulator body. Do not open beyond this point.
• Up and down speed should be the same for ease of adjustment.
8. Install load hook and tooling or fixture to wire rope in the required position. Refer
to "Lash-Up" Section on page 6.
9. Rotate regular adjustment knob clockwise until load raises to the full up position.
The speed should be relatively slow. Pull down and release the load and check
the speed.
10. Connect black tube to the "A" port on the regulator.
11. Rotate auxiliary flow valve counterclockwise until lowering speed is the same as
the lifting speed. "Pinching" off the black tube will pressurize regulator to raise
the load.
12. Raise and lower load two or three times to verify speeds are the same. If speed
in one direction is much faster than the opposite direction the load will be
difficult to move and may provide erratic operation.
13. Pinch off black tube and connect free end to the Z-Servo fitting.
14. Turn adjusting nut at the top of the servo until load is balanced. Rotating nut
clockwise will increase balance setting or raise the load. Counterclockwise
rotation of the nut will reduce balance setting and lower the load.
Form 54072541 Edition 8
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15. Lift and lower the load several times. Equal effort should be required to raise and
lower the load. If load is hard to pull down, turn trim valve clockwise 1/2 turn
and check. If load is hard to raise, turn trim valve counterclockwise 1/2 turn and
check.
• A small volume of air will exhaust at the Z-Servo while in operation.
n Z-Servo Wire Rope Installation
Refer to Dwg. MHP1354 on page 11, A. Adjusting Nut; B. Air Exhaust; C. Wire Rope.
1. Mount balancer on overhead suspension.
2. Position Z-Servo below travel range of wire rope.
3. Insert wire rope through top hole in Z-Servo. Install two clamps on wire rope
1-1/2 in. (38 mm) above top of Z-Servo and 1-1/2 in. (38 mm) apart. Leave 16
in. (40.64 cm) of wire rope free for Z-Servo to operate properly.
4. Insert wire rope through bottom hole in the Z-Servo. Install 2 clamps on wire
rope 1-1/2 in. (38 mm) apart.
5. Install load hook.
• You must leave enough slack in the wire rope to allow proper operation of
the Z-Servo balancer.
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Z-Servo Control
Refer to Dwg. MHP1910 in the Parts Information Manual.
The regulator is the primary control for the BA system. The Z-Servo bleeds off air.
Therefore it works like an amplifier. If the pilot regulator must be readjusted for any
reason, the auxiliary flow, trim valve and Z-Servo must be readjusted.
n Series EA Balancer
Refer to Dwg. MHP1911 in the Parts Information Manual.
• The auxiliary flow valve is fully open when 1/8 in. (3.2 mm) of screw head
protrudes from regulator body. Do not open beyond this point.
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Series EA Regulator Installation
Place balancer on a clean, sturdy work surface with end cap upright. Pull out load
wire rope until reel bottoms out. Remove EA control kit from package. Check to ensure
that O-ring is in port on back of regulator (1). Install regulator on end cap with four
mounting screws and lockwashers (2, 3 and 4). Connect control hose to port "A" on
regulator and port on control handle.
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Operational Adjustments EA Basic
• Prior to performing operational adjustments or servicing make sure air supply
is off.
• Balancer may not support weight of empty handling device, or may raise
device at a potentially hazardous rate. Extreme care must be used until
control adjustments are complete.
• A minimum of 70 psi (4.8 bar) is required to operate the regulator. Do not
use an air line lubricator.
1. Install regulator to balancer.
• Auxiliary flow valve is fully open when 1/8 in. (3.2 mm) of screw head
protrudes from regulator body. Do not open beyond this point.
2. Install EA pendant to "A" port of regulator.
3. Rotate control handle to HI-LOAD position.
4. Rotate regulator adjustment knob counterclockwise until 1/2 in. (13 mm) of
thread is visible.
5. Rotate trim valve clockwise until snug, then counterclockwise 2 full turns.
6. Rotate auxiliary flow valve clockwise until snug.
7. Turn on main air supply. Adjust regulator to required air pressure.
8. Rotate adjustment knob clockwise slowly until the wire rope begins to raise, move
to the full up position, ensure Z-Brake does not engage.
9. Install load hook and tooling or handling device to wire rope in the required
position. Refer to "Lash-Up" Section on page 6.
10. Rotate both LO-LOAD and UN-LOAD flow controls clockwise until snug.
11. Apply the heaviest load to the tooling or handling device.
12. Rotate auxiliary flow valve clockwise until snug, then counterclockwise until 1/8
inch (3.2 mm) of screw head protrudes from side of regulator body.
13. Rotate regulator adjustment knob clockwise until load is balanced.
14. Lift and lower load several times. Equal effort should be required to raise and
lower load. If load is hard to pull down turn trim valve clockwise 1/2 turn and
check. If load is hard to raise turn trim valve counterclockwise 1/2 turn and check.
15. Rotate pendant to LO-LOAD position.
16. Slowly rotate LO-LOAD flow control counterclockwise until load drifts to the floor
or full down position. The wire rope should go slack.
17. Remove heaviest load from tooling or handling device.
18. Apply medium weight load to tooling or handling device.
NOTICE
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