CLP
OPERATOR’S MANUAL
27
#96-6294 • Revised 7/04
NOTE: Only qualified electricians or servicemen should
attempt to repair this unit. Improper repair and/or assem-
bly can cause an electrical shock hazard.
1. Bearings in this unit are pre-lubricated. No additional
lubrication is necessary.
2. Cleaning - Occasionally clean the sump pit and pump
if dirt or foreign matter accumulate. Small stones, gravel,
sand, dirt, silt, etc. can clog and damage the pump and
pump seal, eventually causing pump failure.
3. Disassembly of the motor prior to expiration of the
warranty will void the warranty. It may also cause
internal leakage and damage to the unit. If repairs
are required, return the pump to a local service sta-
tion.
4. If the motor has been disassembled or the switch
chamber opened after the warranty expiration date,
the O-rings and gaskets must be replaced. Care must
be taken to assure that the seals, the switch cover
and air tube gaskets do not leak.
5. The pump should be checked for proper operation
weekly or monthly by watching the operation of the
pump. If anything has changed since the pump was
new, the pump should be examined, and repaired if
necessary.
STANDARD ORP/PH DIGITAL
CONTROLLER - MODEL 250
Operation
The Oxidation Reduction Potential (ORP) and pH of the
water stream are controlled automatically by the digital
controller. The controller receives input from the ORP
sensor on the activity of the sanitizer and input from the
pH sensor on the pH level of the waste stream. The level
of ORP and pH being sensed, and the requested levels
programmed in the controller will determine if outputs
from the controller are sent to the feed pumps. If sani-
tizer or pH adjust are needed, the output will turn the
corresponding feed pump on. This will inject the required
sanitizer or pH until programmed levels are reached and
feed pump will stop.
Acid/Base Jumper
Because most systems are dealing with a high pH situa-
tion, the controller is factory set for acid feed. If you re-
quire a base feed, turn power off to entire system, open
plastic door on controller, remove four screws on display
board, carefully pull backboard, and turn over. Reposi-
tion the JP14 Jumper to the base position. Return board
and door to original position.
Feed Mode
The feed mode for the sanitizer of pH can be set to "OFF",
manual or Automatic. Set to Automatic. To select the
desired feed mode, press [ORP] or [pH] until the corre-
sponding LED indicator light is illuminated. There is a
short delay before activation. Note: Holding the switch
for more than 5 seconds resets the setpoint and calibra-
tion for [ORP] or [pH] to original factory values.
ORP Control Setpoint
The ORP setpoint is factory set at 550 mV, which is rec-
ommended to maintain water quality by killing germs and
bacteria. There is no need for ORP calibration.
The sanitizing concentration required to generate a de-
sired ORP value varies with pH and overall water qual-
ity, particularly Total Dissolved Solids (TDS) concentra-
tion and organic load.
To change the ORP control setpoint:
• Press [SETPOINT],
• Press [ORP]: the display flashes,
• Use the [UP] and [DOWN] arrows to adjust the
ORP value,
• Press [SETPOINT] again to save the new value.
pH Calibration
To calibrate the pH, use a reliable, fresh test kit (Phenol
Red). Note the value of the pH and compare it to the
display value.
To change the pH calibration:
• press [CALIBRATION],
• Press [pH]: the display flashes,
• Use the [UP] and [DOWN] arrows to adjust the pH
value,
• Press the [CALIBRATION] again to save the new
value.
pH Control Setpoint
The pH setpoint is preset at 6.8. To change the pH con-
trol setpoint:
• Press [SETPOINT],
• Press [pH]: the display flashes,
• Use the [UP] and [DOWN] arrows to adjust the pH
value,
• Press [SETPOINT] again to save the new value.
Start-Up
Turn switch on right side of controller to the "ON" posi-
tion. On power up the controller will display "109" and
then "ACD" for acid feed or "BSE" for base feed depend-
ing on your requirements.
