Maintenance

General  Maintenance

The CD1 pump requires very little maintenance. However, the pump and all accessories should be checked weekly. This is especially important when pumping chemicals that may have solids or precipitate. Inspect all components for signs of clogging, leaking, swelling, cracking, discoloration or corrosion. Replace worn or damaged components immediately. 

Cleaning Ball Checks, Strainer, and Injection Valves

If pumping a solution that has particulate or may contain particles or precipitate, checking and cleaning ball check cartridges, suction strainer, and injection valve periodically will be necessary.  

Replacing Diaphragms and Ball Checks

CD1 pump diaphragms and ball checks may need to be replaced.   

Pump must have power to perform diaphragm replacement. Exercise caution. Ensure pump is not in Remote operation.  

Tip! When replacing diaphragms, we strongly recommend replacing ball checks and all O-rings. Complete kits featuring all parts are available in the spare parts pages.  

1. Remove all pressure from the system before servicing pump. If possible, flush and drain pump. Note there will always be trace amounts of fluid in the pump head and manifolds when servicing. Where gloves and proper safety gear at all times.  
2. Disconnect piping or tubing from the discharge and suction manifolds.  
3. Put pump into Manual/Local mode. Disable Remote Start/ stop function. Adjust speed to 25% or less. Stop pump.  
4. Remove top and bottom manifolds by unscrewing the unions nuts. Be careful not to misplace O-rings.  
5. Remove the retainer piece. Remove the ball check cartridg­es. Be careful to keep all pieces together, and note position of arrows on cartridges. Inspect and clean thoroughly or replace as necessary. Place cartridges to the side.  
6. Remove pump head face plate and pump head by unscrew­ing the six pump head screws. Use provided 5/32” Allen wrench, or screwdriver with 5/32” Allen bit. Pull out the pump head cover. Keep all parts together.  
7. If replacing both diaphragms, repeat process for other side.  
8. When removing the diaphragm, run the pump slowly so the diaphragm is extended to furthest outward point. This will make removal easiest.  
9. Unscrew the diaphragm counterclockwise. Note position of the Teflon backing piece.  
10. Clean the pump head and DFD pins. Ensure there is no chemical build-up on DFD pins. Use Q-Tips and sandpaper to ensure there is no build-up or film and pins. Pins must be clean to ensure proper conductive contact when leak is pres­ent. Also clean pump head mount and housing. ensure no chemical has entered pump head mount screw holes.  
11. Your diaphragm replacement Kit will include a diaphragm, Teflon backing piece. Install the pieces together. A small amount of grease may be put on threads to ensure easy ser­vice. Tighten diaphragm until it fully stops. Hand tighten only. Do not use tools. Repeat process with other diaphragm.  
12. Once both diaphragms are installed, replace pump heads. When re-installing pump head, run the pump slowly so the diaphragm is fully pulled to back into the pump. This will allow for easier installation and prevent leaks.  
13. Install the six pump heads screws and washers. Install and tighten screws using a star pattern for uniform tightening. Overtightening on one side of the diaphragm may cause leaks. Final tightening each screw to 38 in-lbs using a torque screwdriver. (it is recommended to check screws and torque after 1-2 hours of operation, as materials may soften or shift during break-in period.)  
14. Repeat process with other pump head. Visually inspect each pump head to ensure even/symmetric installation.  
15. Re-install ball check cartridges, retainer piece, and upper and lower man­ifolds. (Be sure all O-rings are in place. Double check O-rings on bottom adapters. Replace any O-rings if they show signs of degradation.)  
16. Re-connect piping/tubing to pump. Double check tightness of all fittings and screws before operation.

If there are any questions regarding a diaphragm failure or leak, please contact the factory for assistance.  When contacting the factory, please provide the chemical, flow rate, system pressure, and pump serial number. 

FAQs