ProMinent DCM 2 Series, Installation Manual

Page: 13 / 37

DCM 2 Installation
Page 13
NOTE: _ Salt seeded pools with Chlorine Generators require the use of a special, gold tipped
ORP sensor. Free Chlorine measuring versions use a CLB3 sensor. Both of these sensors
screw into a smaller 13.5 mm housing module as shown above.
•
Check that all fittings of the assembly have O-rings installed, and fittings are secure.
•
Adjust flow switch shaft so the top of the ring at the bottom of the shaft is at the 12.5 gph mark if using
the CLB3 sensor, and tighten the compression nut to keep the shaft from leaking and secure the flow
switch shaft in place. pH and ORP sensors are not as flow sensitive, so any flow between 11 and 25
gallons/hour is fine.
•
When you are ready to open up the sample water valves, remove the protective caps from the pH and
ORP sensors, and clean both sensors with Isopropyl alcohol followed by a mild acid, using a soft
bristled toothbrush. Shake or gently tap pH sensors to free any bubbles from the glass bulb tip.
•
Open the supply and return valves fully to evacuate all the air from the DGMa modular sensor
housing.
•
Once all air has been evacuated, reduce flow through the assembly to 12-15 GPH for optimum CLB3
sensor performance.
•
Allow sensors to equilibrate while you complete the wiring of the controller.
2.3. Wiring
Before beginning controller wiring, be sure power has been removed, locked out and tagged as
under repair, before proceeding. Observe all national and local electrical codes and safety
procedures during wiring and installation. This will best assure your safety, the safety of the
pool operations staff and swimmers.
Wiring Guidelines
AC Controller Power
Power the controller using a dedicated, separate breaker in the local lighting-distribution panel.
Do not route the controller AC power in common conduit with variable frequency pump drives.
AC Power to Solenoid Pumps, Valves & Solenoids
Controller relays 1-3 switch and power the AC line to solenoids and chemical pumps and feeders. Ensure
that each feeder has a dedicated neutral cable between the controller and the feeder. Do not share a
common neutral to multiple feeders.
Do not exceed maximum external
electrical load of
120 VAC, 5 Amperes.