11
REPLACING THE REACTOR CHAMBERS
In order for the VK 401 to remain functional the reactor chambers must be replaced every 8000 hrs.
Your unit will indicate that a change is required, “-001” displayed on the LCD.
1. Switch off, and unplug the unit.
2. Remove the 12 screws at the back of the unit.
5. Remove the 4 corner screws out of both the
chamber mountings, being careful to ensure
that the earth wire (yellow) closest to the switch-
board is detached and remains intact.
6. Remove the old reactor chambers and replace
with the new chambers which are already linked
together, then return the 4 screws to the corners
of each chamber, ensuring that the earth wire is
reconnected to the screw closest to the circuit
board, and then connect the new reactor cable
to the circuit board.
7. Close the unit carefully making sure that no
wires are trapped or damaged, return the 12
screws to the back of the unit.
8. Now switch your VK 401 back on, press and
hold the down button for 14 seconds, to reset the
warning timer. Now your VK 401 is ready for the
next 8000 hours.
3. Place the unit on its back, and carefully
lift open the front of the unit.
(make sure no wires are disconnected
when lifting the front cover)
4. Remove the black and white cable linked to
the reactor chambers. (marked J5 on the PCB)
earth wire
