14
15
Duty Cycle:
This air compressor pump is capable of running continuously. However, to prolong
the life of your air compressor, it is recommended that a 50%-75% average duty cycle be
maintained; that is, the air compressor pump should not run more than 30-45 minutes in any
given hour.
TROUBLESHOOTING GUIDE
This section provides a list of the more frequently encountered malfunctions, their causes
and corrective actions. The operator or maintenance personnel can perform some corrective
actions, and others may require the assistance of a qualified BOSTITCH technician or your
dealer
Problem Code
Excessive air tank pressure-safety valve pops off ............................................................................1, 2
Air leaks ............................................................................................................................................................3
Air leaks in air tank or at air tank welds ..................................................................................................4
Air leaks between head and valve plate .................................................................................................5
Air leaks from safety valve...........................................................................................................................6
Knocking Noise .............................................................................................................................................6
Pressure reading on the regulated pressure gauge drops when an accessory is used............7
Compressor is not supplying enough air to operate accessories.......................8, 9, 10, 11, 12, 22
Regulator knob has continuous air leak.................................................................................................13
Regulator will not shut off air outlet........................................................................................................13
Motor will not run...............................................................................................6, 14, 15, 16, 17, 18, 19, 20
Squealing Sound...........................................................................................................................................21
TROUBLESHOOTING CODES
CODE POSSIBLE CAUSE
POSSIBLE SOLUTION
1
Pressure Switch (H) does
not shut off motor when
compressor reaches cut-
out pressure
Set the
Auto/Off
switch to
OFF
, if the unit does not shut off
contact a
BOSTITCH
factory service center or a
BOSTITCH
authorized service center.
2
Pressure Switch (H) cut-
out too high
Contact a
BOSTITCH
factory service center or a
BOSTITCH
authorized service center.
3
Tube fittings are not tight
enough
Tighten fittings where air can be heard escaping. Check
fittings with soapy water solution.
Do Not Overtighten.
4
Defective air tank
Air tank must be replaced. Do not repair the leak.
Risk of bursting. Do not drill into, weld
or otherwise modify air tank or it will weaken. The air
tank can rupture or explode.
5
Leaking seals
Contact a
BOSTITCH
factory service center or a
BOSTITCH
authorized service center.
6
Defective Safety Valve (G) Operate Safety Valve (G) manually by pulling on ring. If valve
still leaks, it must be replaced.
7
Regulator is not adjusted
correctly for accessory
being used
It is normal for some pressure drop to occur when an
accessory is used, adjust the regulator as instructed in
Regulator
under Features if pressure drop is excessive.
NOTE:
Adjust the regulated pressure under flow conditions
while accessory is being used.
8
Prolonged excessive
use of air
Decrease amount of air usage.
9
Compressor is not large
enough for accessory
Check the accessory air requirement. If it is higher than the
CFM or pressure supplied by your air compressor, a larger
compressor is needed to operate accessory.
10
Hole in air hose
Replace air hose.
11
Check valve restricted
Contact a
BOSTITCH
factory service center or a
BOSTITCH
authorized service center.
12
Air leaks
Tighten fittings.
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