Pentair Pool Products Delta D2CX20-21 Installation & Service Manual With Parts List page 18

Circuit breaker trips
Pump is noisy and pump rate
is low
Grease and solids have
accumulated around pump
and will not pump out of
basin
Fig. 47
1. Reset breaker by pushing clear down on handle then back to "ON"
position. If breaker trips again in few seconds it indicates excessive load
probably caused by a short in the motor or control box. Check out
instructions given with control box before pulling pump.
2. If this condition happens after an electrical storm, motor or control box
may be damaged by lightning.
3. Resistance reading of the motor with lead wires disconnected from the
control box can determine if trouble is in motor or control box.
1. Grinder assembly may be partially clogged with some foreign objects
causing noise and overload on the motor.
2. Grinder impeller may be rubbing on grinder ring due to bent shaft or
misalignment.
1. Water shut-off level may be set too high or volume of pumping cycle may
be too great allowing solids to settle out of suspension. Set pump shut-
off level at the pumps widest part where volute case mates with seal
chamber - to 1" below. See Figure 47. Set water level control (float or
weight) to following approx. levels:
2 ft. dia. basin 12" - 14"
3 ft. dia. basin 6" - 8"
4 ft. dia. basin 6" - 7"
above pump shut-off.
2. Run pump on hand operation for several minutes with small amount of
water running into basin to clean oout solids and grease. This allows
pump to break suction and surge which will break up the solids. If level
switch lower weight or float is set properly this condition generally will not
occur.
3. Where all type switches are installed trash may have accumulated
around lower weight causing pump to turn off too soon. Clean trash from
weight and suspension cable.
18 23833A596