Maintenance/Cleaning-1
Maintenance/Cleaning-2
Troubleshooting
Sanitisation
Medley
100
The procedure for the RO system cleaning is how many steps long?
5 steps.
100
Name two reasons for membrane deterioration.
Any two of these: Chlorine, pH, hydrolysis, high-pressure and bacteria.
100
How many types of problems could cause the UVW to fail?
9 types.
100
What is sanitisation?
The process of reducing the number of microorganisms to the officially approved safe level.
100
Is smoking permitted at the purification plant?
No.
200
The Rota Meter needs cleaning because of scale and ______ formation
Algae
200
What is the first step in the MMF maintenance?
Clean the sand.
200
Faults with the high-pressure pump can either involve problems with the pump or the _________.
Motor.
200
How often is sanitisation at WHIN done?
Once or twice a month.
200
What can be done to prevent (to a certain degree) bacteria formation on RO filters?
Keep them away from direct sunlight.
300
What do you have to first do to the UVW in order to clean it?
Disassemble the parts.
300
How often must the ACF be replaced in the WHCs using surface water as their raw water source?
Every year.
300
Often problems require technical expertise to solve. If this is the case, what should you do?
Raise a ticket and call the SEVA number.
300
What method does WHIN use to sanitise the backwash tank?
They use the chlorination method.
300
What type of water is used for UVW cleaning?
Finished water.
400
What is the best pH level in order to avoid premature membrane deterioration?
5.5.
400
If there is a problem with the cleaning and subsequent reassembly of the UVW, what will happen?
The LED will blink.
400
How many key reasons are there for the failure of the dosing pump due to excessive output?
2.
400
How many steps are involved in chlorination?
9 steps.
400
How many reasons are there for low output of the dosing pump?
6 reasons.
500
Cartridges in the cartridge filter should be immediately replaced if...
There is a drop or increase in pressure.
500
How many steps are involved in the cleaning of the Rota Meter?
6 steps.
500
How can you fix leakage due to a loose RO feed control valve?
Tighten it with a pipe wrench.
500
What chemicals are used in chlorination?
Alum and Sodium Hypochlorite.
500
The ACF carbon media should be replaced when what chemical element value is low?
Iodine.
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