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Compliance table – Hellenbrand H-125 Series User Manual

Page 36

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The regenerant piston (the small diameter one behind the

main piston) is removed from the main piston by press-

ing sideways and unsnapping it from its latch. Chemically

clean this in dilute sodium bisulfite or vinegar, or replace the

regenerant piston if needed. To remove the main downflow

or upflow piston fully extend the piston rod and then unsnap

the main piston, from its latch by pressing on the side with the

number. Chemically clean this in dilute sodium bisulfite or

vinegar, or replace the main piston.

Reattach the main piston to the drive cap assembly. Reattach

the regenerant piston (if needed) to the main piston. Do not lu-

bricate the piston rod, main piston or regenerant piston. Lubri-

cant 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 assembly is no longer visible

through the drain port. Excessive force can break the notches

molded into the drive back plate. Make certain that the main

drive gear still turns freely. The exact position of the piston 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.

This display should flash all wording, then flash the software

version and then reset the valve to the service position.

Spacer Stack Assembly

To access the spacer stack assembly remove the drive as-

sembly, 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 stack.

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 when 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 the piston(s) and the

drive assembly.

Figure 29

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 ver-

sion and then reset the valve to the service position.

Injector Cap, Screen, Injector Plug and Injector Replacement

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.

Reattach the drive cap assembly and the 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 ver-

sion and then reset the valve to the service position.

Injector Cap, Screen, Injector Plug and Injector Replacement

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 screw-

driver. The plug can be wiped clean. If the plug leaks replace

the entire plug. The injector consists of a throat and a nozzle.

Chemically clean the injector with vinegar or sodium bisul-

fite. The holes can be blown out with air. Both pieces have

smaller 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 param-

eters of the injector.

Two holes are labeled DN and UP. Check for compliance.

See Table Below.

COMplianCe Table

Push the plug(s) and/or injectors firmly in place, replace the screen and hand tighten the injector cap.

Application

Injector and/or Plug(s)

Main Piston

Regenerant Piston

Stack

H125 Downflow

Injector in "DN" hole,

151-V3407

15-V3174

151-V3430

Softener or Regenerating

Plug in "UP" Hole

Filter (1.32" Distributor)

H125 Backwash Only

Plug in "DN" and "UP" holes, 151-V3407

None

151-V3430

Filter (1.32" Distributor)

Install Refill Port Plug