Hydrotech 7000 Service Manual - Manual (Page 7)

Model 7000
7
Flow Meter Equipped Valves – Delayed Regeneration Mode
In Normal operation the Time Of Day display alternates with the Volume Remaining display. The flow dot flashes
in direct relation to the water flow rate through the unit. As treated water is used, the Volume Remaining display
counts down from a maximum value to zero. If the reserve is reached, a Regeneration queues. The display shows
all dashes if the entire volume is depleted before the scheduled Regeneration time. At the preset Regeneration
Time, a Regeneration cycle initiates.
Control Operation During Regeneration
In Regeneration the display shows the Regeneration status two ways:
• When the valve advances to the next position, the display flashes the number of that next position followed by
three dashes.
• Once the valve reaches a position the display shows that position and number of minutes left in that
Regeneration step.
NOTE: If the step time exceeds 100, the leading digit flashes.
• Once all Regeneration steps are complete, the valve returns to In Service and resumes normal operation.
NOTE: Pressing the Extra Cycle Button during a Regeneration cycle immediately advances the valve to the
next cycle step position and resumes normal step timing.
Control Operation During Programming
The control enters Program Mode with the valve In Service. While in Program Mode the control continues to
operate normally, monitoring water usage and keeping all displays up to date. Control programming is stored in
memory permanently. There is no need for battery backup power.
Control Operation During a Power Failure
During a power failure all control displays and programming are stored for use upon power re-application. An
inaccurate or flashing Time of Day display indicates that a power outage has occurred. During power failure the
control:
• Is fully inoperative and any calls for Regeneration are delayed.
• Upon power re-application, resumes normal operation from the point that it was interrupted.
• Does not monitor the volume of water used during a power outage.
• In Delay Regeneration types, the reserve capacity is set to 1/3 the capacity.
Manually Initiating a Regeneration
A Regeneration cycle may be initiated manually (referred to as an Extra Regeneration Cycle). There are two
options when starting an Extra Regeneration Cycle:
• Press and release the Extra Cycle Button:
— Flow Meter - Immediate Regeneration controls immediately go into a Regeneration cycle.
— For Time Clock and Flow Meter - Delayed Regeneration controls, the In Service dot begins to flash
immediately and a Regeneration occurs at the pre-programmed Regeneration time.
• Press and hold the Extra Cycle Button for five (5) seconds:
— For Time Clock and Flow Meter - Delayed Regeneration controls, the control immediately begins the
Regeneration cycle.
Figure 2: Manually Initiated Regeneration