Eurogalan Geyser-9, Руководство по эксплуатации, Страница: 20 / 27

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Boiler repair
Remove the boiler from the heating system. Remove the electrode group (electrode)
from the boiler case. Decontaminate the internal surfaces of the boiler. Be convinced of
absence of any defects.
It is necessary to perform the following tasks in the course of the boiler repair:
•
Remove an electrode (of the single-phase electrode boiler) or electrode group
(of the three-phase electrode boiler) from the boiler case. Electrode or
electrode group should be inspected for absence of defects (cracks of the
bushing insulators, etc.) and for evaluation of electrodes wear. In case of a
wear comprises more than 40%, the electrode (electrodes) should be replaced.
Traditionally, this happens every 3-5 years.
•
Clean the mating surfaces carefully for providing leak resistance which is
achieved by applying sealing materials in the course of the boiler assembly and
its further operation.
•
Give the internal surfaces of the boiler case a mirror-like polish. The internal
surfaces should be inspected for absence of defects (such as point corrosion,
etc.).
•
Assemble the boiler. The boiler assembling should be performed with
scrupulous attention to alignment between electrodes and to alignment
between electrodes and the boiler case. By this is meant that equal spacing
should exist between electrodes and between electrodes and the boiler case.
Exclude the ingress of contamination into the boiler in the course of the boiler
assembling. Check leak resistance of the boiler.
Install the boiler only vertically into the heating system. Fill the heating system with
heat-transfer agent. The surge tank should be one-thirds full of the heat-transfer agent.
On completion of the tasks listed above it is necessary to check leak resistance of the
heating system, tightening of the bolted and electrical connections, reliability of grounding
connection, value of the electric resistance of grounding, and reliability of automatics. Perform
a trial start of the heating system. Correct the detected malfunctions as may be required.
A person responsible for performing these tasks should make an entry in the List of
the performed maintenance functions, assure it by his own signature and by the seal of the
firm (organization) and to write the address and license number of the firm (organization)
(Appendix No. 2).
“Galan-Potok” low-freezing liquid as a heat-transfer agent
In this case the preventive maintenance of the boiler is performed one in every three
years between the cold seasons. The examination and checking of the tightening of the bolted
and electrical connections, and the reliability of grounding connection are performed yearly.
A procedure of performing the preventive maintenance is similar to the procedure
described above which is performed in case of using water as a heat-transfer agent with the
exception of washing the system that is not performed and with observance of the safety
measures.
The washing of the system is not performed because the “Galan-Potok” low-freezing
liquid contains rust prevention additives and components against formation of scum and scale.
It is necessary to clean the boiler and its components of low-freezing liquid carefully
by flushing with water before performing the boiler repair.
Visual examination of the boiler operation
This task can be performed by the instructed persons no younger than 18 years old.
These specialists should be acquainted with the given Operation manual and the boiler
construction.
It is necessary to monitor the volume of the heat-transfer agent in the heating system
by its level in the surge tank during visual examination of the boiler operation. The surge tank
should be one-thirds full of heat-transfer agent under normal conditions. If level of the heat-
transfer agent in the surge tank is lower than the specified volume a specialist of the firm
(organization) serving a system should perform one of the following procedures depending
on a kind of the heat-transfer agent: