| Pump does not run at all or cycles only once or twice. |
| |
Possible Cause |
How to Check |
Solution |
| 1 |
Door interlock safety switch malfunction. |
- Bypass interlock safety switch, close door, attempt to run pump.
|
- Replace faulty door interlock safety switch before resuming
operation.
|
| 2 |
Faulty liquid level sensor in tank. |
- Electronically bypass liquid level sensor or attempt to run pump
from over ride or manual section of system software.
|
- Replace faulty liquid level sensor.
|
| 3 |
Low liquid level in tank. |
- Visually inspect tank for proper liquid level.
|
- Add chemistry to bring level up to required level.
|
| 4 |
Pump leak detection activated. |
- Visually inspect tubing between the shuttle valve and the pump. If
a leak in the pump has occurred, there should be mist in the air lines or drips coming out
of the muffler.
- Excessive air bubbles should have been seen in the liquid outlet
lines of the pump if an internal leak had occurred.
|
- Return pump to White Knight or authorized repair station.
|
| 5 |
Other area leak detect. activated |
- Check any other areas where leak detection exists for chemical.
|
- Repair leaks and clean up chemical puddles or residue.
|
| 6 |
Faulty leak detection |
- After checking all areas of leak detection and finding no leaks or
evidence thereof, bypass leak detectors and see if normal pump operation is restored.
|
- Replace any defective leak sensor before resuming normal
operation.
|
| 7 |
Plugged liquid filter. |
- Bypass filter and see if normal pump operation resumes.
|
- Replace filter with new, properly pre-wetted filter.
|
| 8 |
Dried out liquid filter. |
- Bypass filter and see if pump operation resumes.
|
- Properly pre-wet filter.
|
| 9 |
Muffler(s) adjusted completely closed. |
- Center pins in adjustable mufflers should be equally adjusted to
one turn out from seat for maximum flow or to maximum in without reducing pump flow
requirements.
|
- Muffler adjustment can band-aid fix many non pump related problems
such as faulty liquid valves down stream. If sensitive or constantly changing muffler
adjustment is required, other problems exist. Proceed with other troubleshooting
procedures in this guide. Many times mufflers have been poorly adjusted while attempting
to fix a problem. When the problem is eventually found and corrected, the mufflers should
be re adjusted. It is interesting to note that most of the pumps that we receive back and
find nothing wrong with them have the mufflers adjusted to very strange settings including
all the way closed.
|
| 10 |
Over pressure sensor activated. |
- Check liquid lines and filters down stream from pump for kinks,
loading and obstructions.
|
- If no obstructions or blockages are found, try replacing the
pressure sensor.
|
| 11 |
Kink in inlet or outlet liquid lines. |
- Visually inspect lines for kinks.
|
- Replace kinked line(s).
|
| 12 |
Kink in air supply line(s). |
- Visually inspect line for kinks.
|
- Replace kinked line(s).
|
| 13 |
Malfunctioning air supply solenoid valve. |
- Supply pump with air pressure from a source other than
that provided by the solenoid valve.
|
- Replace solenoid valve.
|
| 14 |
Chemical solidified in pump. |
- Check for chemical solidification in inlet and outlet lines near
the pump.
|
- Return pump to White Knight or Authorized repair station
|
| 15 |
Tubing connector screwed directly into shuttle valve rather than
into ell adapter. |
- Visually inspect for presence of White Knight ell adapter.
|
- Install ell adapter before tubing connector in shuttle valve. If
this does not remedy the problem, damage may have occurred to the shuttle valve and
shuttle valve replacement may be required.
|
| 16 |
Air pressure to pump too low. |
- Inspect settings on regulators and gage levels.
|
- Set air pressure supply to between 20 and 60 psi.
|
| 17 |
Malfunctioning liquid valve upstream from pump. |
- Replace inlet tubing with testing tube running directly from inlet
on the pump to the tank and see if normal operation resumes.
|
- Replace defective liquid valve.
|
| 18 |
Malfunctioning liquid valve downstream from pump. |
- Replace outlet tubing with testing tube running directly from
outlet on the pump to the tank and see if normal operation resumes.
|
- Replace defective liquid valve.
|
| 19 |
System software failure. |
- Consult Software supplier
|
- Consult System Software Supplier.
|
| 20 |
Debris binding up ceramic shuttle valve. |
- Remove shuttle end pug and ceramic spool will slide right out.
|
- Clean spool and sleeve. Run White Knight on CDA or Nitrogen only.
|
| 21 |
Shuttle Valve Failure. |
- Replace Shuttle valve and see if normal pump operation resumes.
|
- Replace shuttle valve.
|
| 22 |
Internal pump failure. |
- Replace pump with compatible White Knight pump and see if normal
operation resumes.
|
- Return pump to White Knight or authorized repair station.
|
