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H.E.R.O. INDUSTRIES 1100C & 1100NC OWNERS MANUAL
15
"Diaphragm Test"
The solution to almost all problems can be found in the paint side valves, due to the increased wear from
contact with the abrasive paint/spray materials. Intake valve (ref# 16-23) and Outgo valve (ref#32) make up
the paint valves. Refer to pages where exploded views of these valves are shown.
To eliminate the hydraulic side of the pump (piston / oil side of diaphragm) as a source of problems;
1. Remove the intake valve end cap (ref# 16) by removing the four cap screws (ref# 14). Set aside the
spring (ref# 20 ).
2. Start unit.
3. Increase the pressure by turning the pressure control knob (ref# 71) clockwise to full pressure.
4. Put pressure on the center of the exposed diaphragm with the handle of a screwdriver or other blunt
object.
NOTE: The diaphragm is located between the paint head (ref# 23) and the hydraulic head (ref# 51)
5. If you are:
-UNABLE to stop or alter the diaphragm's movement, then the hydraulic side is operating properly.
The problem is located in the “Paint” pump. See troubleshooting guide for additional information.
-ABLE to stop or alter the diaphragm's movement, then the hydraulic pump is not operating properly.
The problem is located in the “Hydraulic” pump. See troubleshooting guide for additional information.
TROUBLESHOOTING
SITUATION
POSSIBLE CAUSE (REMEDY)
ELECTRIC MOTOR WON'T START/RUN
1. Unit unplugged or building circuit fuse is blown. (check, replace or reset fuse)
16
14
51 23