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Operation
Maintenance
Hose Electrical Resistance
Check electrical resistance of hoses regularly. If total
resistance to ground exceeds 29 megohms, replace
hose immediately.
Filters
Once a week check, clean, and replace (if needed) the
following filters.
•
Both pump filters; see your lower manual for
instructions.
•
Spray gun handle filter; see your spray gun manual.
Seals
Once a week, check and tighten throat seals on both
pumps. See table for torque specifications. Be sure to
follow Pressure Relief Procedure, page 30., prior to
tightening seals. There must be zero pressure on the
pumps when adjusting.
Pump Size
Torque Specification
All
25-30 ft-lb (34-41 N•m)
Cleaning Procedure
1. Ensure all equipment is grounded. See Grounding,
page 23.
2. Ensure the area where the system will be cleaned is
well ventilated and remove all ignition sources.
44
3. Turn off all heaters and allow equipment to cool.
4. Flush mixed material. See Flush Mixed Material,
page 37.
5. Follow the Pressure Relief Procedure, page 30.
6. Perform Park and Shutdown procedures, page 42.
Turn off all power.
7. Clean the external surfaces only using a rag soaked
in solvent that is compatible with the spray material
and surfaces being cleaned.
8. Allow enough time for the solvent to dry before
using the system.
Change the Mix Ratio
In order to change the mix ratio, one or both high
pressure displacement pumps need to be replaced, the
air motor needs to be re-positioned, and the over
pressure relief valves may need to be changed.
1. Check the Parts Varying by Pump Package table
on page 81 for the correct pump sizes.
2. Remove and replace pump. See Remove
Displacement Pump page 48.
3. Adjust the position of the air motor. See Motor
Position page 25.
4. If changing from one type of XP system to
another (for example - changing from XP50 to
XP70 or from XP70 to XP50): Remove the existing
over pressure relief valves (302) and install the
correct valves for the new system type. See
Replace Over Pressure Relief Valves on page 51.
5. Change the air pressure relief valve (CG) as
required, depending on the ratio.
3A0420ZAF
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