Maintenance Chart; Checking Safety Valve; To Drain Tank - DeWalt DWFP55120 Instruction Manual

condense in air tank. If not drained, water will corrode and weaken
the air tank causing a risk of air tank rupture.
5. Allow the compressor to cool down.
6. Wipe air compressor clean and store in a safe, non­freezing area.
MAINTENANCE
The following procedures must be followed when maintenance or
service is performed on the air compressor.
1. Ensure On/Off switch is in the OFF position.
2. Remove air compressor plug from outlet.
3. Drain air tank.
4. Allow air compressor to cool down before starting service.
NOTE: All compressed air systems contain maintenance parts (e.g.,
oil, filters, separators) that are periodically replaced. These used parts
may contain substances that are regulated and must be disposed of in
accordance with local, state, and federal laws and regulations.
NOTE: Take note of the positions and locations of parts during
disassembly to make reassembly easier.
NOTE: Any service operations not included in this section should
be performed by a D WALT factory service center or a D
e
authorized service center.

Maintenance Chart

Procedure Before Each
Use
Check safety valve X
Drain air tank
Remove tank from
service
1- For more information, call 1-800-4-D
WALT
e
Daily or after See tank
each use
warning label
X
X
1
WALT (1­800­433­9258)
e

Checking Safety Valve

WARNING: Risk of bursting. If the safety valve does not work
properly, over-pressurization may occur, causing air tank rupture or
an explosion.
Before starting compressor, pull the ring on the safety valve to make
sure that the safety valve operates freely. If the valve is stuck or
does not operate smoothly, it must be replaced with the same type
of valve.

To Drain Tank

WARNING: Risk of Unsafe Operation. Risk from noise. Air tanks
contain high pressure air. Keep face and other body parts away
from outlet of drain. Use ANSI Z87.1 eye protection (CAN/CSA
Z94.3) when draining as debris can be kicked up into face.
WARNING: Risk from noise. Use ear protection [(ANSI S12.6
(S3.19) hearing protection] as air flow noise is loud when draining.
NOTE: All compressed air systems generate condensate that
accumulates in any drain point (e.g., tanks, filter, aftercoolers,
dryers). This condensate contains lubricating oil and/or substances
which may be regulated and must be disposed of in accordance
with local, state, and federal laws and regulations.
1. Ensure On/Off switch (A) is in the OFF position.
2. Turn the regulator knob counter-clockwise to set the outlet
pressure to zero.
3. Remove the air tool or accessory.
4. Pull ring on safety valve allowing air to bleed from the tank until
tank pressure is approximately 20 psi. Release safety valve ring.
5. Drain water from air tank by opening drain valve (G) on bottom
of tank.
WARNING: Risk of Bursting. Water will condense in the air tank.
If not drained, water will corrode and weaken the air tank causing a
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