Reattach the main piston to the drive cap assembly. Reattach the regenerant piston (if needed) to the main piston. Do not lubricate the piston rod, main piston or regenerant piston. Lubricant will adversely affect the clear lip seals. Reinsert the drive cap assembly and piston into the spacer stack assembly and hand tighten the drive cap assembly. Continue to tighten the drive cap assembly using a screwdriver as a ratchet until the black o-ring on the spacer stack as- sembly is no longer visible through the drain port. Excessive force can break the notches molded into the dive back plate. Make certain that the main drive gear still turns freely.

The exact position is not important as long as the main drive gear turns freely. Reattach the drive assembly to the control valve and connect all plugs. After completing any valve maintenance, press and hold NEXT and REGEN buttons for 3 seconds or unplug power source jack (black wire) and plug back in. This resets the electronics and establishes the service piston position. The display should flash all wording, then flash the software version (e.g. 181) and then reset the valve to the service position.

Figure 7

Spacer Stack Assembly:

To access the spacer stack assembly remove the drive assembly, drive cap assembly and piston. The spacer stack assembly can be removed easily without tools by using thumb and forefinger. Inspect the black o-rings and clear lip seals for wear or damage. Replace the entire stack if necessary. Do not disassemble.

The spacer stack assembly may be chemically cleaned (dilute sodium bisulfite or vinegar) or wiped with a soft cloth.

The spacer stack assembly can be pushed in to the control valve body bore by hand. Since the spacer stack assembly can be compressed it is easier to use a blunt object (5/8” to 1-1/8” in diameter) to push the center of the assembly into the control valve body. The assembly is properly seated with at least four threads are exposed (approximately 5/8’). Do not force the spacer stack assembly in. The control valve body bore interior can be lubricated with silicone to allow for easy insertion of the entire stack. Do not use silicone or any other type of lubricant on the clear lip seals or the piston.

Reattach the drive cap assembly and piston(s) and the drive assembly.

After completing any valve maintenance, press and hold NEXT and REGEN buttons for 3 seconds or unplug power source jack (black wire) and plug back in. This resets the electronics and establishes the service piston position. The display should flash all wording, then flash the software version (e.g. 181) and then reset the valve to the service position.

Injector Cap, Screen, Injector Plug and Injector:

Unscrew the injector cap and lift off. Loosen cap with special plastic wrench or pliers if necessary. Attached to the injector cap is a screen. Remove the screen and clean if fouled. The plug and/or injector can be pried out with a small screwdriver. The plug can be wiped clean. If the plug leaks replace the entire plug. The injec- tor consists of a throat and a nozzle. Chemically clean the injector with vinegar or sodium bisulfite. The holes can be blown out with air. Both pieces have a small diameter holes that control the flow rates of water to insure that the proper concentration of regenerant is used. Sharp objects, which can score the plastic, should not be used to clean the injector. Scoring the injector or increasing the diameter of the hole could change the operating parameters of the injector. Push the plug(s) and/or injectors firmly in place, replace the screen and hand tighten the injector cap.

Refill Flow Control Assembly or Refill Port Plug:

To clean or replace the refill flow control, pull out the elbow-locking clip and then pull straight up on the elbow. Replace the elbow locking clip in the slot so that it is not misplaced. Twist to remove the white flow control retainer. The flow control can be removed by prying upward through the side slots of the retainer with a small flat blade screwdriver.

Clean the flow control or the white flow control retainer using dilute sodium bisulfite or vinegar. Do not use a wire brush. If necessary, replace the flow control, o-ring on the flow control retainer, or the o-ring on the elbow.

Reseat the flow control so the rounded end is visible in the flow control. Reseat the white flow control retainer by pushing the retainer into the elbow until the o-ring seats. Remove locking clip, push down on elbow to reseat and insert locking clip. Do not use petroleum jellies, oils, or other unacceptable on o-rings. A silicone lubricant may be used on the o-ring on the elbow or the white retainer.

Water Meter or Meter Plug:

The water meter assembly is connected to the PC board by a wire. If the entire water meter assembly is to be replaced, remove the control valve cover and discon- nect the power source and water meter plugs from the PC Board. Unlatch the drive assembly and lean if forward. Unthread the water meter wire from the side of the drive assembly and through the drive back plate. To reinstall, rethread the water meter wire through the drive back plate and the side of the drive assembly. Reattach the drive assembly and the water meter and power plugs. If no water meter wire is visible, then a plug is installed, not a water meter. The water meter wire does not need to be removed from the PC board if the water meter is only being inspected and cleaned. To remove the water meter assembly, unscrew the meter cap on

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3M CSFM1254 Spacer Stack Assembly, Injector Cap, Screen, Injector Plug and Injector, Water Meter or Meter Plug
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CSFM1254 specifications

The 3M CSFM1254 is a sophisticated communication headset designed specifically for industrial and construction environments where effective communication is critical. This headset combines advanced technology, comfort, and durability, making it an ideal choice for professionals who work in demanding conditions.

One of the standout features of the 3M CSFM1254 is its high-performance noise-canceling capabilities. The headset is equipped with advanced passive noise reduction technology that effectively reduces background noise, allowing users to communicate clearly even in noisy environments. This is particularly important in construction sites or manufacturing facilities where heavy machinery and equipment can create significant auditory distractions.

The 3M CSFM1254 utilizes a robust dual-ear design that provides enhanced sound isolation, further improving the user experience. The ear cups are designed for comfort, featuring cushioned padding that ensures a secure fit during extended use. This comfort, combined with an adjustable headband, allows for personalized fitting, making it suitable for all-day wear in various work situations.

Another highlight of the headset is its reliable communication capabilities. The built-in microphone is noise-canceling as well, which means that it fosters clear and effective communication by minimizing interference from surrounding noise. Users can expect consistent audio quality, enabling them to stay connected with colleagues and supervisors without the frustration of interrupted or inaudible conversations.

Durability is a defining characteristic of the 3M CSFM1254. It is constructed with high-quality materials that can withstand the rigors of challenging work environments. The headset has been tested for various impacts and environmental conditions, making it a reliable choice for those who need equipment that can keep up with their demanding work routines.

In terms of connectivity, the 3M CSFM1254 offers versatile options, allowing it to be easily integrated with various communication systems, including two-way radios and smartphones. This flexibility enhances workplace communication efficiency, enabling teams to coordinate tasks and safety measures effectively.

Overall, the 3M CSFM1254 headset stands out as a top choice for professionals who require reliable, clear communication and durability in their headsets. With its combination of noise-canceling technology, comfort, and robust build, it addresses the needs of those working in high-noise environments, ensuring they remain connected and safe while performing their tasks.
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