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MiniMaster
8. Start
Preparation
1. Check that the pool's water values are within the recommended limits; use photometric measurement equipment to confirm.
2. Immediately prior to start-up, the electrodes must be fitted in each module.
Then connect the electrode's BNC contact to the relevant control unit, see Figure 5. NB! The characteristics of the electrodes
may be hampered if they are left in a dry environment for more than one hour.
Fig. 6.
E
Start-up
First read the paragraph "LEDs" in section 10 Operation, which describes Mini-
Master's LED signals and what they mean.
In order for the unit to give the correct value, the pool circulation pump must be in operation.
1. Turn on the power to the MiniMaster.
2. Open all cocks.
3. Press the Flow button (F).
(Where there are two control units, this only needs to be done on the left-hand unit.)
4. Adjust the flow using the flow screw (H) until the green LED comes on.
Check that there is a flow through the unit; this can be seen in the window (J), and that
water is flowing freely through the hoses. If the flexible PVC hose on the right hand side
of the MiniMaster (the return hose) is sucked together by underpressure, see the
appropriate action to take under "Trouble shooting" in section 14.
5. Let the fitting flow for at least 30 minutes in order to stabilise the electrodes and eliminate air in the fitting.
6. Check the pH value of the pool.
7. Balance the pH value, see below.
Balance pH value
Drain measurement water from the drain cock (N) and check the pH value of the pool by using photometric measurement
equipment. Balance the pH value to 7.2-7.4 by dosing acid (where pH value is high) or alkali (where pH value is low)
manually direct into the pool or using MiniMaster dosing modules (accessories);
- press button (E) to activate the dosing function
- press button (G) for 3 seconds for forced dosing for 30 seconds.
- then press button (E) to stop the dosing function.
Concentrated dosing may initially produce significant fluctuations due to the size of the pool and circulation speed. Let the
fluctuations level out and carefully check that the pH value has stabilised.
8. The pH value of the water must be in balance before you continue to balance the free chlorine value, see below.
Balance free chlorine value
Drain measurement water from the drain cock on the pre-filter (N) and check the pool's free chlorine value using photometric
measurement equipment.
Balance the chlorine value to 0.5-1mg/l either by dosing the pool with chlorine manually or by using the MiniMaster's
dosing modules;
- press button (E) to activate the dosing function
- press button (G) for 3 seconds for forced dosing for 2 minutes
- then press button (E) to stop the dosing function.
Concentrated dosing may initially produce significant fluctuations due to the size of the pool and circulation speed. Let the
fluctuations level out and carefully check that the chlorine level has stabilised.
NB If organic chlorine (weekly chlorine in disc form) is used or has been used in the pool, this will release cyanuric acid into the
pool water. Cyanuric acid in the water produces misleading chlorine measurement values and calibration errors in the MiniMaster.
In such instances, dilute the pool water with as much fresh water as possible so that cyanuric acid levels fall to the recommended
value (see "Recommended values..." in section 3 General information).
9. Once the values for both pH and free chlorine are in balance at the same time, you may continue and calibrate the MiniMaster.
Each unit must be calibrated separately. The operate independently of each other.
E
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14
ENGLISH
Fig. 7.
G
F
H
J
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