COLIBRI
REF. 971.14.11 Z - 971.21.11 Z
5. OIL WILL NOT ENTER THE POT
1. Check that the safety cut out lever has not been accidentally shut off.
2. If it is not possible to reset the safety cut out lever phone us for advice. In case of failure of
the first float the second one catches the excess oil and trips the safety cut out lever, making it
impossible to reset.
3. Simulated failure can occur if a full oil control valve is disturbed causing the secondary
float chamber to flood.
6. APPLIANCE GOES OUT WHEN THE CENTRAL HEATING PUMP IS TURNED OFF.
This problem can be caused by one of the following
1. The flow to the heat leak rad is inadequate.
2. The size of the heat leak rad is inadequate.
3. The safety stat set point needs increasing.
OPERATING FLOW RATES
Flow rates are shown in cc per minute.
Min.
max.
Colibri 14
0.45l/hr 1.37l/hr
Colibri 21
0.66l/hr 2.11l/hr
To achieve optimum burner performance at these flow rates you will need to have matching flue
vacuums as stated.
If the chimney does not generate enough vacuum the flow rates will have to be adjusted so that the
burner maintains equilibrium, i.e. blue flame combustion.
This will result in lower output from the appliance.
OIL SMELLS
Visual check on all joints for obvious leaks.
Check that the descaling lever packing gland nut is adjusted.
11-0 SERVICING
HARWORTHING HEATING LTD 30.06.98
This publication, nor any part of it, may not be copied by any means, without written permission from
the authors.
This product is subject to continuous development and improvement and it is consequently
acknowledged that due to this process there may be some omissions and errors.
This publication is intended only to assist the reader in the use of this product and therefore Harworth
Heating Ltd shall not be liable for any loss or damage whatsoever arising from the use of any
information, error or omission found in this guide.
Maintenance on this product must be carried out only by approved personnel, WHO HAVE BEEN
SUITABLTY TRAINED.
Summary of Contents for COLIBRI 971.14.11.Z
Page 13: ...COLIBRI REF 971 14 11 Z 971 21 11 Z Fig 6 Diagram for Parts List...
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