Atlas Copco RT Manual do utilizador - Página 11

Procurar online ou descarregar pdf Manual do utilizador para Ferramentas Atlas Copco RT. Atlas Copco RT 16 páginas. Square drive hydraulic torque wrench system

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SYMPTOM

PROBABLE CAUSE

Gauge shows pressure

Couplings are loose or not working Solenoid

build-up but the tool will

is not working

not cycle

1. See above.

Cylinder will not retract

2. Voltage to electric pump is too low to line

drop or inadequate amperage is

available.

3. Linkage between piston rod and drive

pawl are broken.

Cylinder pressure will not

1. Oil blow by in tool (Piston seal leak, blown

build

O-ring, cracked piston)

2. Pump Problem.

Cylinder/tool leaks

1. Safety relief valve on swivel has lifted.

2. Blown O-ring in cylinder.

3. Defective gland seal.

Tool operates backwards 1. Couplings reversed.

2. Multiple hoses in even numbers.

Ratchet returns with

1. Broken or otherwise inoperable reaction

retract stroke

pawl.

Ratchet will not take

successive strokes.

Tool locks onto nut.

Gauge records no

1. Gauge connection is loose.

pressure

2. Bad gauge.

3. Pump will not build pressure.

Broken or otherwise inoperative drive

pawl or spring.

Cylinder not retracting completely.

Ratchet will not take successive

strokes.

Linkage between piston rod and drive

plates is broken.

Reaction pawl is loaded when the tool

is maxed out in torque.

Tool is operating backwards.

Tool is wedged under a fixed object.

REQUIRED ACTION

Tighten and/or replace couplings. Use Test #1 to isolate

problem Use test #2. if not working replace solenoid

1. See above.

2. Get shorter extension cord or upgrade to 12AWG, 25 amp

rating or better. If shop power is adequate, draw power

from welding machine or cal rod transformer.

3. Replace parts as necessary.

1.Replace defective parts. SHOP JOB

2. Remove screws from pump motor to reservoir, slide pump

motor to the back while keeping pistons into oil. Turn pump on.

If you have no oil coming out from the solenoid tube, change

the solenoid.

2A. Tight the regulating valve to maximum, Push on the

advance button and while holding down, look if any oil is

coming out from the regulating tube. If oil is coming out, change

the regulating valve.

2B If pump sounds like a lot of pebbles in a tin can, the

problem may be a worn motor coupling-remove motor from

base plate-using a pair of needle nose pliers removes the

motor coupling-if worn replace. SHOP JOB.

2C AIR PUMP-Fault FLR due to excessive moisture and/or dirt

in air supply. Disassemble and change. SHOP JOB.

2D. Air pumps- Faulty remote control vv valve cartridge.

Replace.

1A Tighten all hose and couplers. If leak continues, adjust

safety setting – Test #4.

1B Check to see if the system is properly plumbed by running

test #5 (high pressure on retract side will lift the safety relief

valve).

2. Replace O-Ring with proper high pressure O-Ring. SHOP

JOB.

3. Replace gland seal. SHOP JOB.

1. Run test #5. Replumb system as necessary.

2. As plumbed, Atlas Copco hoses may only be joined

together in odd numbers ONLY if it is necessary to use 2, 4,

6 hoses-make an adapter from spare high pressure

couplings and nipples.

Replace drive pawl and/or spring. SHOP JOB.

Remove tool from nut and cycle freely for several strokes.

If problem persists, check pawls.

Operator not allowing adequate time for cylinder to retract

fully

Replace parts as necessary -SHOP JOB.

Press advance button on remote and build pressure-

continue to press down on remote while pulling back on

one of the disengagement levers- release remote while

continuing to hold back on levers.

Push advance button down-tool should immediately fall

free- Run test #5.

Remove shroud from around ratchet. Using any tool

available, pry the drive pawl out of the ratchet and at the

same time pull back on the disengagement levers. Tool

should swing free or turn away the socket or obstruction.

Tighten coupling.

Replace gauge.

See cylinder will not build pressure above.

Replace defective seals. SHOP JOB.