Operation; Pressure Relief Procedure - AIRLESSCO LP540 Hi Boy B Series Operation - Repair - Parts

Airless paint sprayer
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Operation

Pressure Relief Procedure

Follow this Pressure Relief Procedure whenever you
stop spraying and before cleaning, checking, servicing,
or transporting equipment.
1. Engage the gun trigger lock. Refer to the separate
instruction manual provided with gun for safety fea
tures and how to engage the trigger lock.
2. Turn the unit off.
3. Disengage the gun trigger lock and trigger the gun
to relieve residual fluid pressure.
Hold metal part of the gun in contact with
grounded metal pail. Use minimum pressure.
4. Turn Prime/Pressure Relief Valve to the open (prim
ing) position to relieve residual pressure.
There will be a wider gap between valve handle
and cam body when in open position. In the
closed position there is only a very slight gap.
The valve handle can move both clockwise and counter
clockwise and can face different directions.
3A1190H
ti15989a
ti17403a
5. Re-engage gun trigger lock and close Prime/Pres
sure Relief Valve.Turn Prime/Pressure Relief Valve
to the open (priming) position to relieve residual
pressure.
If the spray tip or hose is clogged, follow Steps 1
through 5 above. Expect paint to splash into the
bucket while relieving pressure during Step 4.
If you suspect that pressure hasn't been relieved due to
damaged Prime/Pressure Relief Valve, or other reason,
engage the gun trigger lock and then very slowly loosen
the tip nut or hose end coupling to relieve pressure
gradually, then loosen completely and clear obstruction.
Setup
To reduce the risk of static sparking, fire or explo
sion which can result in serious bodily injury and
property damage, always ground the sprayer and
system components and the object being sprayed,
as instructed in the safety warning section of this
manual.
Ensure electrical service is 120 VAC, 15 amp min
imum and the outlet is properly grounded.
For generator power, a minimum 7000 watt gen
erator with a voltage regulation must be used.
Connect the hose and gun
1. Remove the plastic cap plug from the outlet and
screw a conductive or grounded 3000 psi spray
hose onto fluid outlet.
2. Connect an airless spray gun to the other end of the
hose. Do not install spray tip.
Do not use thread sealer on swivel unions as they are
made to self seal.
Operation
ti17403a
M
M
7

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