User's Manual

4 306987
Service
Pressure Relief Procedure
WARNING
SKIN INJECTION HAZARD
The system pressure must be manually
relieved to prevent the system from
starting or spraying accidentally. Fluid
under high pressure can be injected through the
skin and cause serious injury. To reduce the risk of
an injury from injection, splashing fluid, or moving
parts, follow the Pressure Relief Procedure
whenever you:
D are instructed to relieve the pressure,
D stop spraying,
D check or service any of the system equipment,
D or install or clean the spray tip.
1. Lock the gun trigger safety.
2. Turn off the power to the pump.
3. Unlock the gun trigger safety.
4. Hold a metal part of the gun firmly to the side of a
grounded metal pail, and trigger the gun to relieve
pressure.
5. Lock the gun trigger safety.
6. Keeping your hands away from the end of the
drain valve, slowly open the drain valves (required
in your system), having a container ready to catch
the drainage.
7. Leave the drain valves open until you are ready to
use the system again.
CAUTION
If the filter will not be used for awhile, thoroughly
clean all the parts in solvent and blow them dry
before the paint dries and clogs the filter. To avoid
damaging parts, DO NOT clean them with a wire
brush or sharp object.
Indicator
The indicator provides gradual warning of a dirty
element. When the indicator shown 3/4 red, clean the
element. If not cleaned promptly, the filter by-pass
valve opens and fluid will not be filtered.
Replace the indicator assembly (1) if the indicator isn’t
working correctly (it’s always red or never red).
By-pass Valve
The valve opens when a dirty element causes the
filter’s outlet pressure to drop 25 psi (2 bar) below the
inlet pressure. This keeps the system pressure steady
and prevents the element from collapsing. Replace the
by-pass valve (2) if it is damaged or worn.
Fluoroelastomer O-Ring and O-Ring Backup
These o-rings seal the bowl (10) to the housing (3). If
fluid leaks around the bowl, replace the o-ring (8) and
o-ring backup (9).
Remove the bowl and o-rings. Clean the parts in a
compatible solvent. Be careful not to damage the
o-rings or sealing surfaces of the bowl and housing.
Before assembling, lubricate the parts with no. 2
grease. BE SURE to install the o-ring backup with the
groove facing up.
Bowl, Element and Spring
Keep a spare bowl (10), element (6) and spring (7) on
hand to reduce down time. Before removing the bowl,
direct the fluid through the bypass system or shut
down the system. Relieve fluid pressure by opening
the drain valve (B).
Holding the bowl with a wrench to keep it from turning,
screw the drain plug (12) out. After the fluid has
drained out, remove the bowl, element, and spring.
Replace immediately with the spare bowl, element and
spring to keep the paint from drying on the housing (3)
and other parts. Install the element with the dome end
up. Lubricate the threads of the bowl before screwing it
into the housing; tighten it securely.
Clean the bowl, element and spring you removed with
a compatible solvent before the paint dries; DO NOT
use a wire brush or sharp object for cleaning. Clean
the filter element (6) with a small paint brush. Blow out
lodged particles with air, and inspect for damage.
Replace element if ruptured. Store clean parts until
needed.