Pentair MYERS MINI-MAX Manual Del Propietário página 13

PROBLEM
Pump starts too
frequently
Leaks in system.
Pressure switch.
Tank waterlogged.
Leak in drop pipe.
Pressure switch too far
from tank.
Little or no water
delivered
Bleeder orifice check valve
stuck or installed back-
wards (standard tank only).
Low water level.
Low voltage.
Plugged intake screen.
Check valve at pump
discharge stuck.
Worn impellers and
diffusers.
Air or milky water
discharge from faucets
Gas in well water.
Air volume control not
working (standard tanks
only).
TROUBLESHOOTING GUIDE (cont.)
CHECK
Check all tank connections with
soapsuds for air leaks. Check plumbing
for leaks.
Check for defective switch or switch out
of adjustment.
Pre-charged tanks; check tank pre-
charge air pressure, check for leak in
bladder.
Air over water tanks: check for air leaks.
Check Air Volume Control (AVC).
Check snifter valve operation.
Raise drop pipe one length at a time
until water stands in pipe.
Measure distance from pressure switch
to tank.
Examine valve.
Determine lowest water level in well
while pump is running and compare to
pump depth setting.
Check voltage at control box with pump
running. Check incoming wire size and
drop cable size against chart, Page 5.
Pull pump and check condition of screen.
Pull pump and examine check valve.
Make sure system is clear of obstructions
and pump is in solid water and operation
normally.
Check for presence of gas in well water.
Make sure ports and ball check valves
are clear.
CORRECTIVE ACTION
System must be air and water tight.
Re-adjust or replace pressure switch.
Pre-charge tanks: adjust air pressure to 2 PSI
(13.8 kPa) less than pump cut-in pressure (when
there is no water pressure on system).
Replace bladder if necessary.
Air over water tanks: repair or replace tanks;
replace snifter valves if necessary.
Replace pipe above that point.
Move switch to within one foot (.3M) of tank.
If stuck, free valve; if installed backwards,
reverse it.
Lower pump further into well (but at least 5' (1.6M)
above bottom of well). Throttle pump
discharge until discharge equals recovery rate
of well. NOTICE: Running pump while
airlocked can cause loss of prime and seriously
damage pump.
Install larger wire from meter to control box.
Install larger wire from control box to pump.
If necessary, have power company raise supply
voltage.
Clean or replace as necessary.
Free check valve.
Replace pump.
Remove bleeder orifices; plug tees. Be sure
plugged tees do not leak. If necessary, separate
gas from air before it enters pressure tank.
Replace control if necessary.
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