RoboVent FlexPro Hi-Vacuum Series, Руководство пользователя, Страница: 70 / 88

70 ROBOVENT • FLEXPRO HI-VACUUM SERIES OWNER’S MANUAL
SECTION 1100
Troubleshooting
HVE Hi-Vac Machine is making excessive noise.
1. Check for correct motor rotation. Motor running in the correct direction will
produce high static pressure vacuum. If running in reverse the airflow will be
reversed.
2. Check that all HVE Machine mounting bolts are secure and not loose.
3. Make sure motor bearings are good. (Amperage rating will be higher than
normal if bad.)
4. Blower could be out of balance. If this is the case call 1-888-ROBOVENT for assistance.
5. If the noise is an electrical hum in the control panel, it could be a defective VFD.
PowerFlex Pulse Cleaning System not operating. Check the following.
1. Verify that the airline is connected to the air tank and that there are no pinched or
clogged airlines.
2. Check air tank pressure. The Power Flex works best when pressurized at 85 PSI.
3. Check setting of ePad Controller Settings (Page 11).
4. Check diaphragm on solenoid valve. If optimum pressure is supplied to the air tank and
the controller is operational then this would indicate a problem with the diaphragm.
5. Check for leaks in the air tank or fittings around the solenoids.
6. Check for voltage at the firing solenoid. Note that this will be a very quick firing
voltage for less than 300 ms.
Little or no suction across intake. Check the following:
1. Check motor rotation. When the unit is powered down note the rotation of the
motor shaft. Motor rotation should be as specified in the HVE Hi-Vac Machine
manual for that particular motor. If the rotation direction is incorrect, switch the
position of two of the three power supply conductors on the terminals.
2. The cartridge filters may be full or blinded. Perform a Maintenance or Manual
Cleaning cycle on the eTell controller as specified on page 10 of this manual
(check differential pressure value). This is to be done with the motor in the off
position. Restart the system and check your differential pressure value again on the
controller. If the pressure did not drop below 3 kPa then replace the filters.
3. Check the frequency feeding into the HVE Hi-Vac Machine from the VFD (frequency
reading is displayed on the VFD screen). If there is not enough suction at the inlets
the VFD setting may need to be increased. This is done by increasing the B5-19
setting on the VFD. Follow the instructions in the VFD manual.
4. Check the safety valve spring setting to ensure the spring is set at the correct
location to ensure that proper static pressure can be reached without the safety
valve flap opening.