Grundfos Selcoperm SES Series, Инструкция по установке и эксплуатации

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9.4 Advanced maintenance schedule (certified service persons)
In the following table, the advanced maintenance activities are described. These activities must be performed by certified service
persons.
The position references in the table refer to the PID. See fig.
5 .
Before replacing any components, flush the system and drain it. See sections:
•
10.4 Flushing the system with softened water
• 10.5 Draining the system .
After the system has been drained, it must be recommissioned according to section 7.2 Starting up the system initially .
9.4.1 Checking the system for hydrogen gas leakages
This task must be performed by certified service persons.
While the system is in operation mode "Production", check all
flanges and glued connections of the following components for
gas leakages with a portable hydrogen detector:
• electrolysis cells
• NaClO solution line
• exhaust air line
• degassing and storage tank.
Interval Component Task See section
Annually
Selcoperm
electrolysis
system
Retighten the DC connections at the cells and the rectifier with the correct torque. 9.4.2
Retighten the connections for earthing and power supply of all components, if
necessary.
Check the brine tank. Clean it, if required.
9.3.1
Check the electrolysis cells, the NaClO solution line and the exhaust air line for
hydrogen gas leakage.
9.4.1
Replace worn or damaged parts.
Calibrate the gas warning system.
Observe
separate
manuals.
Check the salinity of the electrolyte. 9.3.4
Check the flow rates of water and brine. 7.2.4
Selcoperm
electrolyser
Overhaul solenoid valve (0.05). Replace any worn or damaged parts.
Observe
separate
manuals.
Clean flow sensors (0.02, 1.10, 2.10, 3.10) with warm water, if required.
Check the strainer in pressure reducing valve (V0.02) and clean it, if necessary.
Brine dosing
station
Overhaul the brine pumps.
• Clean and replace worn valves, seats and diaphragms, if there is any sign of damage.
• Fit new O-rings and gaskets before reassembling.
Observe
separate
manuals.
Every 2
years
Selcoperm
electrolysis
system
Replace the gaskets in the electrolysis cells (C1.1 - C3.2) and in the NaClO solution
line.
9.4.3
Selcoperm
electrolyser
Perform acid cleaning, if required. 9.5.2
Brine tank Check proper functioning of the floater valve in the brine tank.
WARNING
Danger of explosion
Death or serious personal injury
- When checking the system for gas leakages, use
hydrogen detectors. Do not use a match or a
flame.