Liter Meter III water changing system help ...

[Atdymoke]

I have a Liter Meter III system that is about a year and a half old. I use it for water changes and was working great until I was looking at it last week and noticed the display say "A SERVICE PUMP A". Has anyone else had this issue and/or what's the fix for this? I took the housing cover off for the tubing and rollers, tubing LOOKED fine, the metal rod inside still turns and the rollers seem to be okay. Not sure what the fix is. Any assistance is much appreciated!

 

[namester]

From the LM3 manual (http://spectrapure.com/manuals/LiterMeter3J-PF.pdf), page 13:

When a pump’s accumulated ON time
exceeds the Service Interval Time Limit, the LiterMeter III will beep once
per minute and flash a message on the display until the pump head is
inspected and/or serviced and the Service Interval Timer is reset.


To reset the Service Interval Timer:
1: Be sure that all pumps are off.
2: Press the MAINT button (RIGHT). You now have the choice of changing the “Service Interval Time” from the standard “300” hours to any number of hours you wish. Then right-cursor until you see the next screen.
3: The pump that needs service will be displayed. If, for example, Pump A has exceeded the Service Interval Time, the display will ask if you have serviced
that pump. The pump head service procedure is described on page 20. Answer YES by pressing the UP button.
4: The Service Interval Timer for Pump A will be reset to 0000 hours.
5: If other pumps need servicing, they will be displayed next.
6: If there are no other pumps that need service, the LiterMeter III will return to the *ALL PUMPS OFF* display.

 

[AZDesertRat]

Inspect the shaft, rollers and tubing for build up or discoloration. Its usually a black or dark gunk that can be cleaned off with a paper towel and some Goo Gone, Disolve It or other citrus type cleaner. I have the UPLC-II ATO which uses the same pump and I clean the rollers, tube and shaft a couple times a year on average.

 

[Atdymoke]

Thanks guys, I'll give that a shot. There is some discoloration on the latex tubing so maybe that's the key. Namester, thanks for the instructions. I looked at the maintenance intervals and it was set at 300. I set it for 700 thinking it would reset, but it didn't. I think my instructions left out some of what you posted though so I'll give it another step by step.