User's Manual

4 307252
Service
CAUTION
If the filter will not be used for a while, thoroughly clean all
the parts in solvent and blow them dry before the paint dries
and clogs the filter. To help prevent damaging the 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 shows 3/4 red, clean the element. If not cleaned
promptly, the filter bypass valve opens and fluid will not be
filtered.
Replace the indicator assembly (1) if the indicator is not working
correctly (it is always red or never red). See Fig. 3.
Bypass Valve
The valve opens when a dirty element causes the filter’s outlet
pressure to drop 15 psi (1 bar) below the inlet pressure. This
keeps the system pressure steady and prevents the element
from collapsing.
Replace the bypass valve (2) if it is damaged or worn.
Fluoroelastomer O-Ring and O-Ring Backup
The o-rings seal the bowl (10) to the housing (3). If material
leaks around the bowl, replace the o-ring (6) and o-ring backup
(7).
Follow the Pressure Relief Procedure on page 2. Remove the
bowl and o-rings. Clean the parts in a compatible solvent. Be
careful not to damage the o-ring or sealing surfaces of the bowl
and housing. Before assembling, lubricate the parts with No. 2
grease. Be sure the o-ring backup is installed with the groove
facing up.
Bowl, Element and Spring
To reduce downtime, keep a spare bowl (10), element (8) and
spring (9) on hand. Before removing the bowl, direct the fluid
through the bypass pipes or shut down the system. Relieve fluid
pressure by opening the drain valve (B). Have a container ready
to catch the drainage.
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 to clean. Store until needed.
NOTE: Clean the filter element (8) with a small paint brush. Blow
out lodged particles with air, and inspect for damage. Replace
if ruptured, damaged or too dirty to clean.
1
2
1
2
3
6
7
8
9
3/4” npt(f) Inlet
and outlet
3/4--16 unf (f)
drain port
1
2
03730
10
Fig. 3
12