11
Litre-gallon key
Briefly press this key once to select the throughput indication in litres per
minute (l/min) or gallons per minute (GPM). Press the key for approx.
3 seconds to reset the total throughput volume ("JOB") to 0. We recommend
resetting the "JOB" to 0 after every resin change so that the residual capacity
of the ion exchange resin can be estimated and compared. Press the key for
8 seconds to reset the "TOTAL" litres value to 0.
6. Maintenance
6.1. Changing the batteries
If the battery symbol (
) is displayed, the batteries must be replaced.
Undo the 4 screws on the red cover, lift off the cover and insert 3 new AAA
(LR03) 1.5 V batteries. Make sure the cover seal is seated properly. Refit the
cover and secure with the screws. Check the device is working correctly.
For detailed information about the combined meter, see the
PUROTAP® LFM-20 product page on our website.
6.2. Fine mesh filter
Fine mesh filter (8) requires cleaning once a year or when throughput is
inadequate. This is done by undoing the coupling at the outlet (9). The fine
mesh filter can then be removed and cleaned with water.
6.3. Draining
To reduce the weight of the device for transportation and avoid frost damage
in winter, the water must be drained after use. Draining is carried out by
opening the drain valve (9) and shut-off valve (2).
