How to quickly troubleshoot Pneumatic Roofbolters

I. Quick Troubleshooting of Power System Faults

1. Insufficient Motor Power

First, check the air source: Ensure the air supply valve is fully open, adjust the air pressure to 0.4-0.63MPa, and tighten any leaking joints; replace excessively long or undersized intake pipes. If the air compressor is faulty, repair it promptly.

Clean blockages: Clean the oil cup and filter screen. If the muffler is clogged, disassemble and clean it. If the muffler is frozen, replace it with antifreeze lubricating oil.

Component repair: Replace damaged bearings directly. If there is debris in the motor gearbox, disassemble and clean it. If the wrench cannot be tightened properly, replace the motor valve with a brand new one.

2. Drilling Rig Does Not Rotate After Air Supply

First, check if the pressure reducing valve is in the closed position. If it still does not rotate after opening the pressure reducing valve, disassemble the motor and check the bearings. Replace damaged bearings directly. If there are no other faults, check the motor rotor clearance. If the clearance is too large, adjust or replace the motor. 

II. Quick Troubleshooting of Outrigger System Faults

1. Outriggers Not Retracting/Retracting Slowly

First Step: Emergency Handling: Manually push the outriggers back using a screwdriver. If manual pulling is difficult, replace the outrigger seals.

Second Step: Unblocking and Troubleshooting: Clean the vent holes of the three-way valve body and the cylinder vent holes of the fixed sleeve. If blocked, use a wire to clear the blockage. If the blockage is severe, remove the three-way shaft, clean the entire fixed sleeve air passage, and check the gaskets; replace any damaged ones immediately.

Seal Inspection: Replace damaged outrigger seals. Inspect the seals on the three-way shaft; replace any worn ones. If dust has entered the cylinder or the sleeve is rusty, disassemble and clean the cylinder, and replace the worn dust seal.

2. Outrigger Air Leakage/Insufficient Thrust

For outrigger air leakage, follow the disassembly and repair steps: First, remove the outer fixed sleeve of the outrigger, then separate each cylinder stage one by one; replace all worn seals, ensuring the sealing bevel faces upwards during installation; finally, reassemble in reverse order of disassembly to resolve the issue. Insufficient thrust: First check the air pressure. If the air pressure is normal, clean the clogged filter and replace worn cylinder reversing valve seals to restore thrust.

III. Quick Troubleshooting of Water Supply System Faults

1. No Water Spray/Intermittent Water Spray

First, confirm that the water switch and water regulator are open. If no water comes out after adjusting the regulator to the appropriate flow rate, disassemble and clean the inlet filter to remove any blockages.

Check if the air and water pressures are matched and adjust them to the appropriate range. If the control air cannot reach the water valve, check for air leaks at all joints and tighten or repair any leaks.

2. Continuous Water Leakage

First, use the water regulator to shut off the water supply immediately. Remove the water valve and check: If the spring behind the steel ball or the O-ring is damaged, replace the corresponding parts and clean the valve cavity; if there is dirt stuck inside the valve, clean it and reinstall it; if the valve seat is damaged, replace the valve.

IV. Principles of Rapid Troubleshooting Troubleshooting follows the principle of starting with the easiest: first check external air sources, water valves, pipelines, and other locations that do not require disassembly. After eliminating these, disassemble and check internal seals and bearings to avoid unnecessary disassembly. More than 90% of common faults can be located in 5 minutes.