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DHP Air Compressor Trouble Shooting Guide - Section 8
The DHP Dental Air Compressors addressed in this manual are all the industry standard Lubricated
Copelmatic Air Compressors. They are extremely durable, and with the proper maintenance should operate
trouble free for many years. This section of the DHP Dental Air Compressor manual is designed to assist the
owner/end user in diagnosing simple problems in their Dental Air Compressor system and rectifying the
problem with relative ease.
Dental Air Compressor does not operate
1) Check the electrical source
A - Locate the electrical panel and verify if the electrical breaker has ' tripped '. Prior to resetting the electri-
cal breaker fuse visually inspect the dental air compressor for any unusual conditions (oil and or air leaks,
loose electrical connections etc.). You may attempt to reset the fuse if you are experienced in this proce-
dure. If you are not comfortable with this procedure it is strongly recommended that you contact an electri-
cian or another person who is experienced in this procedure.
B - If you have attempted to reset the electrical breaker fuse and the breaker does not reset or ' trips ' again
- DO NOT ATTEMPT TO RESET THE BREAKER FUSE AGAIN - CONTACT AN ELECTRICIAN IMMEDI-
ATELY!
C - If after the previously recommended visual inspection with no unusual conditions noticed and the electri-
cal breaker fuse does reset upon the first attempt, monitor the situation as you may have an undersized or
defective electrical breaker fuse and it should be replaced as soon as possible by a licensed electrician.
2) Electrical Source is intact-dental air compressor has power
A - Turn off the electrical power to the dental air compressor and CAREFULLY FEEL THE SIDE OF THE
DENTAL AIR COMPRESSOR MOTOR-BE EXTREMELY CAUTIOUS AS IT MAY BE VERY HOT.
If the dental air compressor motor is hot contact DHP immediately!
B - If the dental air compressor is not hot contact DHP for further instructions.
Dental Air Compressor does not supply enough air
1) Verify dental air compressor is undersized for the required demand of air.
A - Check if the users versus the horsepower rating of the dental air compressor are proper. If the number
of users outweigh horsepower of the dental air compressor you will receive inadequate air.
B - Check the Dental Air Compressor for air leaks. The Dental Air Compressor motor should operate, without
any operatories or handpieces in use, for approximately 3 to 4 minutes building the air pressure in the storage
tank. If the Dental Air Compressor motor operates for more than 5 minutes attempting to build up air pressure in
the storage tank there is an air leak in the air compressor system. If the Dental Air Compressor motor operates
for the estimated 3 to 4 minutes building the air pressure in the storage tank, shuts off temporarily and turns on
again without any of the dental operatories or handpieces being operated you have a small air leak in the air
compressor.
1) Check the air compressor for loose fittings.
2) Check the dental operatories dental unit junction boxes for air leaks.
3) Check the dental unit delivery system head for leaks.
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