15
HTEC-500
How to clean the check valve
1. Remove the check valve assembly from the pump head.
2. Put some acetone in a small beaker. Over the beaker of acetone, fasten a column end plug to the
assembly. The end plug will help to push out the inside parts into the beaker of acetone.
DO NOT
TOUCH
any of the inside parts (parts #4–#7, shown in Fig. 15) with your fingers. Use tweezers to
handle them.
3. Assembling. Assemble as the smooth face of the seat ring faces to the ball (#8). The parts #7 is
reversible. Put the #7 on the table and push the #3 on #7.
Error 4
Error 4 occurs when the pump motor needs to generate more torque. This situation happens when the
pulse free program needs to quench difficult pulsations that have unusual pressure changes and cause
the pump motor to generate too much torque.
If this problem happens after a few rotations of the pump motors and it does not stop immediately after
starting the pump, it may be because the pump system has the same problem as described for error 3
and the computer generated too much torque on the pump motor (once you cancel the error 4 by
pressing the pump key, try to regenerate the error by running the pump). In this case, the treatment is
the same as described for error 3. Please refer to the section on error 3.
If this problem happens without the motor rotation after running the pump and if the pump stops
immediately after pressing the pump key, it is because of the failure of the power train or the pressure
sensor of the pump. Please contact Eicom to fix the power train.
Fig. 14
Fig. 15
1
Inlet Valve,
2
Outlet Valve
Do not touch
4
to
7
by finger.
