Aquascape AquascapePRO 1500 Pump (20001) - Manuel (Page 7)

7
FIG 4. Slide collar up to check
valve and hand tighten. It’s as
simple as that!
5) Troubleshooting
CAUTION! Always disconnect the pump form the electrical power source before handling.
If the system fails to operate properly, carefully read instructions and perform maintenance
recommendations. If operating problems persist, the following chart may be of assistance in
identifying and correcting them.
MATCH “CAUSE” NUMBER WITH CORRELATING “CORRECTION” NUMBER.
NOTE: Not all problems and correction will apply to each pump model.
6) Corrections
1. Check all electrical connections for security. Have electrician measure current in motor
leads, if current is within ±20% of locked rotor Amps, impeller is probably locked. If
current is 0, overload may be tripped. Remove power, allow pump to cool, then
recheck current.
2. Make sure water level is at or close to proper height on skimmer face plate. (see below)
3. Recheck all sizing calculations to determine proper pump size.
4. Check discharge line for restrictions, including ice if line passes through or into cold
areas.
5. Remove and examine check valve for proper installation and freedom of operation.
6. Open valve.
7. Check impeller for freedom of operation, security and condition. Clean impeller cavity
and inlet of any obstruction.
8. Remove pump or tilt pump to allow trapped air to escape from impeller chamber.
9. Check rotation. If power supply is three phase, reverse any two of three power supply
leads to insure proper impeller rotation.
10. Repair fixtures as required to eliminate leakage.
11. Check pump temperature limits & fluid temperature.
12. Replace portion of discharge pipe with flexible connector.
13. Check for leaks around basin inlet and outlets.
14. Check fittings and tighten if needed
Problem Cause (Correction*)
*see step 6 on pg. 7
• Poor electrical connection, blown fuse, tripped
breaker or other interruption of power; improper
power supply. (1)
• Insufficient water level. (2)
• Incorrect voltage (1)
• Impeller jammed or loose on shaft, worn or
damaged, impeller cavity or inlet plugged. (7)
• Incorrect voltage (1)
• Excessive inflow or pump not properly sized
for application. (3)
• Discharge restricted. (4)
• Check valve stuck closed or installed backwards. (5)
• Shut-off valve closed. (6)
• Impeller jammed or loose on shaft, worn or
damaged, impeller cavity or inlet plugged. (7)
• Air may be trapped in pump impeller chamber (8)
Problem Cause (Correction*)
*see step 6 below
• Check valve stuck closed or installed backwards. (5)
• Insufficient water level. (2)
• Incorrect voltage (1)
• Excessive inflow or pump not properly sized
for application. (3)
• Impeller jammed or loose on shaft, worn or
damaged, impeller cavity or inlet plugged. (7)
• Excessive water temperature (internal
protection only). (11)
• Debris in impeller cavity or broken impeller. (7)
• Fittings on pump or check valve not secured
properly (14)
Pump cycles too frequently
or runs periodically when
fixtures are not in use.
Pump Shuts off and turns on
independent of switch.
(trips thermal overload
protector).
CAUTION! Pump may start
unexpectedly. Disconnect
power supply.
Pump operates noisily or
vibrates excessively.
AQUA 1500 Pump Instructions 7-067 7 10/3/06 10:53:43 AM