Solution:
Tighten, repair, or replace valves.
4. Strainer basket or skimmer basket loaded with debris.
Solution:
Remove strainer housing cover or skimmer cover, clean basket, and refill strainer housing with water.
Tighten cover.
5. Suction side clogged.
Solution:
Contact a qualified repair professional.
Block off to determine if pump will develop a vacuum. You should have 5”-6” of vacuum at the strainer cover
(Only your pool dealer can confirm this with a vacuum gauge)
. You may be able to check by removing the
skimmer basket and holding your hand over the bottom port with skimmer full and pump running. If no suction is
felt, check for line blockage.
a. If pump develops a vacuum, check for blocked suction line or dirty strainer basket. An air leak in the suction
piping may be the cause.
b. If pump does not develop a vacuum and pump has sufficient “priming water”:
i. Re-check strainer housing cover and all threaded connections for suction leaks. Check if all system
hose clamps are tight.
ii. Check voltage to ensure that the motor is rotating at full RPM’s.
iii. Open housing cover and check for clogging or obstruction in suction. Check impeller for debris.
iv. Remove and replace shaft seal only if it is leaking.
Low Flow – Generally, Check For:
1. Clogged or restricted strainer or suction line.
Solution:
Contact a qualified repair professional.
2. Undersized pool piping.
Solution:
Correct piping size.
3. Plugged or restricted discharge line of filter, valve partially closed (high gauge reading).
Solution:
Sand filters – backwash as per manufacturer’s instructions; D.E. filters – backwash as per
manufacturer’s instructions; Cartridge filters – clean or replace cartridge.
4. Air leak in suction (bubbles issuing from return fittings).
Solution:
Re-tighten suction and discharge connections using Teflon tape. Inspect other plumbing connections and
tighten as required.
5. Plugged, restricted, or damaged impeller.
Solution:
Replace including new seal assembly.
Noisy Pump – Check For:
1. Air leak in suction piping, cavitations caused by restricted or undersized suction line or leak at any joint, low
water level in pool, and unrestricted discharge return lines.
Solution:
Correct suction condition or tighten fittings, if practical. Holding hand over return fitting will sometimes
prove this point or putting in a smaller eyeball fitting.
2. Vibration due to improper mounting, etc.
Solution:
Mount the pump on a level surface and secure the pump to the equipment pad.
3. Foreign matter in pump housing. Loose stones/debris hitting impeller could be cause.
Solution:
Clean the pump housing.
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