7
Operating Instructions
CHN10302, CHN10310
www.chpower.com
Troubleshooting Chart
Stop using tool immediately if any of the following problems occur. Serious personal injury could occur.
Any repairs or replacements must be done by a Qualified Service Person or Authorized Service Center.
Symptom
Possible Cause(s)
Corrective Action
Air leaking at trigger valve
area.
O-rings in trigger valve housing are
damaged
Replace o-rings and check operation of Work
Contact Element (WCE)
Air leaking between housing
and nose.
1. Loose screws in housing
1. Tighten screws
2. Damaged o-rings
2. Replace o-rings
3. Damage to bumper
3. Replace bumper
Air leaking between housing
and cap.
1. Loose screws
1. Tighten screws
2. Damaged gasket
2. Replace gasket
Tool skips driving fastener
1. Worn bumper
1. Replace bumper
2. Dirt in nose piece
2. Clean drive channel
3. Dirt or damage prevent fasteners or
pusher from moving freely in magazine
3. Clean magazine
4. Damaged pusher spring
4. Replace spring
5. Inadequate air flow to tool
5. Check fitting, hose, or compressor
6. Worn o-rings on piston or lack of
lubrication
6. Replace and lubricate o-rings
7. Damaged o-rings on trigger valve
7. Replace o-rings
8. Air leaks
8. Tighten screws and fittings
9. Cap seal leaking
9. Replace seal
Tool runs slow or has loss of
power
1. Tool not lubricated sufficiently
1. Lubricate tool
2. Broken spring in cylinder cap
2. Replace spring
3. Exhaust port in cap is blocked
3. Replace damaged internal parts
Fasteners are jammed in tool 1. Guide on driver is worn
1. Replace guide
2. Fasteners are not correct size
2. Use only recommended fasteners
3. Fasteners are bent
3. Replace with undamaged fasteners
4. Magazine or nose screws are loose
4. Tighten screws
5. Driver is damaged
5. Replace driver
6. Fasteners loaded incorrectly
6. Review Loading / Unloading section in this
manual
