Armstrong LIFT BASIC Instrucciones De Instalación página 10

maintenance
Warning! Before attempting any maintenance on the unit, disconnect the
power cord from the power supply to reduce the risk of electrical shock.
Attention: Potential free contact can still be under power.
If the unit does not perform as stated in above tests, remove the tank cover
of the pump. The drive unit can be removed now.
Now verify that the float mechanism moves up and down freely. If the float
binds, it may be dirty or damaged. The motor itself does not need any
maintenance so do not attempt any repairs. Never open the cover of the
drive unit because breaking the seal will invalidate the warranty.
However, the tank and float mechanism will need to be cleaned once a year.
The tank and the floats should be cleaned with mild detergent using a damp
cloth.
Reassemble the unit in reverse order.
cleaning the check valve and verify its operating
1. After unscrewing the cap nut remove the discharge line from the check
valve
2. Use a SW 20 wrench to remove the check valve from the drive unit.
3. Visually check the valve for obstructions. If damaged, replace.
4. To re-install the check valve, hands tighten it to the drive unit. Then,
tighten ½-turn further with a wrench. Be careful not to over-tighten as this
may distort the O-ring seal under the check valve.
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