Owner`s manual

Owner’s Manual HK3819 / HK5523
Page 9
ORIFICE SIZE
All tips are rated by the size of the orifice or bore size. The bore size is measured in thousandths of an inch
( .017 = 17 thousandths of an inch ). The size of tip required is based on the consistency of the material to be sprayed.
The thicker the paint, the larger the tip size required. Always consult the product label or ask the paint retailer for the
manufacturer's recommendations with regard to proper tip sizes.
FAN WIDTH
Fan width or pattern width is determined by the spray tip's "fan width" classification. This size is measured in inches,
and is determined when spraying 12 inches from the spray surface and the tip of the gun. Various methods of noting
the fan widths are used by tip manufacturers. Ask your distributor for assistance.
NOTE: Two tips having the same tip size, but different fan widths will deliver the same amount of paint over a different
area (wider or narrower strip).
SPRAY TIP REPLACEMENT
During use, especially with Latex paint, high pressure and material abrasion will cause the orifice to grow larger. As the
orifice grows larger, the fan width grows smaller. Replace tips before they become excessively worn. Worn tips waste
paint, cause over spray, and decrease sprayer performance.
NOTE: When using Latex paint, a spray tip will wear at the rate of one size for approximately every 100 gallons of
material sprayed.
SPRAY TIP SELECTION
TROUBLESHOOTING
TROUBLE POSSIBLE CAUSE REMEDY
Motor will not
start or run
1. Unit unplugged.
2. Unit not switched “ON”
3. Pump at full pressure.
4. Pressure Control set too low.
5. Fuses on motor controller.
1. Plug unit in to a 120V, 60HZ,
2. Flip On/Off switch to ON
3. Follow “pressure relief instructions”
4. Slowly increase pressure until motor starts.
5. Replace if necessary
Motor runs,
but
Poor unit perform-
ance.
1. Fault in pump section.
2. Worn spray tip.
3. Improper tip size.
4. Material too viscous( thick ).
5. Gun filter clogged
6. Prime valve leaking
1. See fluid section repairs.
2. Replace tip.
3. Replace tip.
4. Thin material with appropriate thinners, per product manufacturer’s
instructions.
5. Clean or replace filter.
6. Repair or replace valve
Low or Erratic
Output / Pressure
1. Air leaks or blockages.
2. Worn Packings, Intake or Outgo balls and / or
seats.
3. Cylinder sleeve leakage.
4. Worn spray tip.
5. Cylinder O-Rings worn or damaged
6. Prime valve leaking
1. Check the following;
⇒ Intake tube fitting.
⇒ Plugged intake screen.
⇒ Intake O-ring.
2. Re-pack pump.
3. Replace piston valve O-Rings.
4. Change tip.
5. Replace Cylinder O-Rings.
6. Repair or replace valve
Unit does not
prime
1. Worn packings.
2. Air leak.
3. Paint level too low.
4. Prime Valve clogged.
5. Paint too thick.
6. Valve ball stuck or glued.
1. Re-pack pump.
2. Check the following;
⇒ Intake tube connections.
⇒ Plugged intake screen.
⇒ Intake O-ring.
3. Add paint to pail.
4. Disassemble and clean.
5. Thin material with appropriate thinners, per product
manufactures .instructions
6. Replace worn balls and / or seats. Clean
No Output
1. Pump not primed.
2. Pump needs rebuilding.
3. Broken drive parts;
con-rod pin, piston rod, valve.
1. Prime pump.
2. Rebuild pump.
3. Repair as required.
Fluid leaks from front
drive housing.
1. Worn upper packings.
2. Leaking transducer.
1. Replace packings.
2. Replace transducer seals.