10
•
‘24 hour’ mode – to automatically fill the hopper with pellets, up to the trap door of the vacuum
unit trap door, every 24 hours starting when the ON/OFF switch on the SpiraVac control panel is
first set to ON.
In both cases the operation of the vacuum unit is as follows – Refer to the flow diagram in Figure 3-6.
The vacuum motor will start and create a vacuum in the cyclone. This pulls closed the trap door at the
base of the cyclone. The vacuum switch, inside the vacuum unit, is activated. Power is supplied to the
pellet auger located in the base of the bulk pellet store.
The auger starts and pulls pellets into the suction chamber of the auger unit, where they are drawn into
and through the flexible suction tube to the vacuum unit, and then deposited in the cyclone. The red
indicator neon on the vacuum unit control panel will blink on and off during this process.
The pellet auger runs for 60 seconds and is then automatically switched off. The vacuum motor runs on
for a further 15 seconds after the auger has stopped (to ensure no pellet build up in the tubes) before it is
automatically switched off (i.e. a total vacuum motor running time of 75 seconds).
When the vacuum unit stops, the loss of the vacuum allows the weight of the pellets to open the trap door
and the pellets fall into the hopper.
The vacuum system will deliver approximately 6kg of pellets in each operation, and will therefore have to
operate several times to either top up or fill the pellet hopper.
When the ‘VACUUM SYSTEM’ ON/OFF switch is first set to ON
The vacuum system will operate repeatedly, as described above, until the hopper is filled with pellets up
to the level of the trap door of the cyclone. In this condition the trap door will be prevented from closing
by the pellets. This is intentional as further operation of the vacuum system is not required with this
amount of pellets in the hopper.
Thereafter the vacuum unit will operate automatically in one of the two following ways:
‘Top-up’ mode
In this operating mode the SpiraVac system will only operate if the level of the pellets in the hopper falls
below the minimum level monitored by the contents diaphragm switch.
The vacuum system will operate repeatedly to top-up the hopper until it is filled with pellets up to the level
of the trap door of the cyclone as on the initial operation of the vacuum system. In this condition the trap
door will be prevented from closing by the pellets.
If the pellet hopper contents switch has detected a low pellet level and the vacuum motor system is
operating, but the pellet hopper contents switch is not satisfied after 26 attempts (e.g. due to the bulk
pellet store being empty) then the system will go into ‘fault’ mode.
The indicator neon on the control panel will remain on constantly. The user can over-ride this by switching
the ‘VACUUM SYSTEM’ switch to OFF and filling the pellet hopper manually (see Section 3.4.2 – Manual
Mode below).
NOTE
When the ‘VACUUM SYSTEM’ switch is set to OFF the indicator neon will remain lit. When it is
switched back to ON the indicator neon will now go out.
Summary of Contents for WPVKIT10
Page 12: ...12 Figure 3 6 SpiraVac operation flow diagram ...
Page 22: ...22 Figure 5 4 Vacuum unit wiring diagram ...
Page 24: ...24 Figure 5 6 Heating system controls S plan type system connection diagram ...
Page 25: ...25 Figure 5 7 Heating system controls Y plan type system connection diagram ...
