Kongskilde POLYVAC 30, Directions For Use Manual, Page: 10 / 16

10
Troubleshooting
Problem
Loss of capacity.
Rotary Valve not working.
Plugging of pressure line - (SUC
Unit).
Cause
Plugged screen in suction cyclone.
Paddles in rotary valve leaking.
Motors are rotating in wrong
direction.
Exhaust filter(s) plugging up.
Paddles too tight against housing.
Rotor in valve jammed with foreign
material.
Rotor bearings seized.
Not enough air being introduced to
convey material when going into 6"
line from 4" suction line.
Remedy
Clean out screen by means of
compressed air and/or steel
brush.
Loosen the screws and slide the
paddle outwards until it contacts
wall. Retighten the screws.
If paddles must be replaced. Fol -
low instructions in the Rotary
Valve manual to remove the cell
wheel and install new paddles. At
this time the bearings should be
checked.
Change wiring for motor to run
in proper rotation on both the fan
and the rotary valve.
Clean or replace filter socks.
Loosen the screws and slide the
paddle away from the housing.
Paddles should just contact the
wall. Retighten the screws.
Loosen the clamp between the
fan housing (Item H, Page 2) and
the cyclone (Item A) and raise the
fan housing up. Loosen the clamp
on the bottom of the cyclone and
remove the cyclone. The rotary
valve is now exposed. Remove
any foreign material blocking or
plugging the valve.
Remove the end caps and replace
as outlined in the Rotary Valve
service manual.
Open the Variable Air Intake (Item
F, Page 6) until material flows
freely.