Viconics HP727S - Manual (Page 9)

9 9
ADJUSTMENT OF MINIMUM FILTRATION TIME
The HP727S features an adjustable minimum filtration period. Parameter FIL.
• A daily 24 hours cycle is divided 6 daily periods of 4 hours ( 240 minutes ).
• The adjusted parameter value represent the minimum total daily hours that filtration is required.
FIL parameter adjustments:
OFF 2 hours to 23 hours ON
Pump is always OFF Pump will work 2 to 23 hours daily Pump is always ON
• In OFF mode the circulating pump needs to be always on, or energized by an external timer clock.
• In ON mode, the circulating pump is always on.
The selected minimum filtration time is divided equally into the 6 daily periods.
Ex.: Selected 4 hours
÷ 6 periods = 40 minutes per period. So the circulating pump will work 40 minutes for each period of 4
hours.
The minimum selectable filtration time is 2 hours ( 6 periods of 20 minutes each )
When the circulating pump is energized, if there is a heating demand during a filtration period:
• The circulating pump will stay on until the heating demand is satisfied.
• During that period the minimum filtration time counter is still active and counting.
• If the daily minimum filtration time is obtained and the heat demand is not satisfied, the circulating pump will stay on until the
heating demand is satisfied.
• If the daily minimum filtration time is obtained and the heat is satisfied, there is still a 15 minutes circulating pump time per
period ( every 4 hours ). This is done to sample the pool water temperature is case the water needs to be heated. ( not valid if FIL
parameter = OFF )
Whenever the FIL parameter is changed, the daily counter will reset.
BACKWASH OPERATIONS:
For backwash operation do the following:
1. Cut out power to the pump ( with line voltage switch or ( FIL = off, POL = off and SPA = off )).
2. Prepare system for backwash and energize the pump ( with line voltage switch or ( FIL = on )).
3. The circulating pump will go ON and the controller will not check for 5 minutes if water flow is present at pool flow switch.
4. You will have 5 minutes of uninterrupted water flow to do the backwash.
5. To stop the circulating pump use ( the line voltage switch or ( FIL = off )).
Normally, when the circulating pump is requested to operate, and there is no water flow detected at the flow switch, the pump will
automatically cut off. This procedure will give a 5 minutes period of uninterrupted water flow, before the circulating pump cuts off.
TO CHANGE THE DISPLAY BETWEEN °F OR °C:
Factory default is °F
• Touch and hold down the set key until the message POL appears
• Touch the [Service / Select ] key until the message F_C appear.
• Touch the ↑ arrow key to select °F or touch the ↓ arrow key to select °C
EEPROM RECOVERY:
If a flashing PLE or CSE error message appears, hold down the Service / Select key until the error message disappears ( approx. 4
seconds ). The control will be re-initiated to factory default.
Re-enter the Pool / Spa setpoints and minimum filtration time parameter.
HEATPUMP DEFROST OPERATION:
During the defrost cycle of the evaporator coil, the display will show FS to indicates that the unit is defrosting. During this time the
fan is on and the compressor is inactive. See section 10. for defrost sequence.