Servicing - Glow-worm Ultrapower sxi Series Installation And Servicing

1. To ensure the continued efficient and safe operation of the boiler it is recommended that it is checked and serviced at
regular intervals. The frequency of servicing will depend upon the particular installation and usage, but in general once a year
should be enough.
2. It is the Law that any servicing is carried out by a competent person.
3. Before commencing with a service or replacement of parts the boiler should be isolated from the electrical supply and the
gas supply should be turned off at the gas service cock, see diagram 12.1.
4. When replacing a part on this appliance, use only spare parts that you can be assured conform to the safety and
performance specification that we require. Do not use reconditioned or copy parts that have not been clearly authorised by
Glow-worm.
5. On completion of servicing the "Benchmark" log book should be completed.
13.1 General Inspection
Prior to servicing carry out an initial inspection of the
following:
1. Condition of case and flue.
2.
Flue terminal for obstructions.
3.
Electrical supply connection
4. Water connections.
5. Gas connection.
6. System pressure.
13.2 Functional Checks
With the appliance operational carry out the following
functional checks:
1. COMBUSTION - preferably with a flue gas analyser as
section 13.8. If no flue gas analyser is available remove the
tank module front panel to gain access to the boiler module
front panel securing screws, see diagram 13.1, and taking
care not to touch any components, check the flame picture
through the viewing window, see diagram 13.2.
Should the flame show signs of lift, sooting or appear
yellow then it will be necessary to service the burner, if the
servicing does not correct the condition, then proceed to the
combustion test described in section 13.8.
2. GAS RATE - If the gas rate is lower than the minimum
gas rate the burner will require servicing. However should the
combustion measurement or flame and gas rate be correct,
then it is not necessary to remove the burner assembly for a
service.
3. CHW FLOW RATE - agrees with the technical
specification, if it does not, check the CH filter, see diagram
15.21 and the gas rate as described in commissioning.

13.3 Servicing

All routine servicing requirements can be achieved by the
removal of the front panels.
Position the control box and domestic expansion vessel
into their service positions, this will improve access to
components, see diagrams 13.4 to 13.6.
Before commencing with a service or replacement of parts.
The boiler should be isolated from the electrical and gas
supplies.
13 Servicing
IMPORTANT NOTES
SECURING
SCREW (2 OFF)
VIEWING
WINDOW
44
BOILER MODULE
FRONT PANEL
Diagram 13.1
Diagram 13.2