SECTION 2-14
EQUIPMENT DESCRIPTION
FLOWMAX RO MANUAL REV: B 05/1999
USFilter
United States Filter Corporation
Chemical Pump Receptacles
There are four 120 volt chemical receptacles mounted of the side of the RO Control Panel. They are
used to power chemical injection pumps if these are used in the pretreatment system. The two
receptacles labeled “Bisulfite” and “Acid/Caustic” will energize whenever the feedwater valve is on.
The receptacle labeled “ antiscalant” will only be energized when the OR pump is running. The fourth
receptacle is a convenience receptacle that can be used to power a PC or test instrument. This receptacle
is always hot, as long as the circuit breaker inside the control panel is on. The service on the
convenience receptacle is limited to 10 amps.
Auxiliary Contacts
There are two sets of auxiliary contacts in the panel that can be hooked up to remote devices. One is
energized whenever the pump is running, the second is energized during alarm fault conditions.
Optional pH Monitor
An optional pH monitor can be supplied to monitor the feed water pH, and shut down the RO if the pH
goes out of range. This alarm includes a 5 minute time delay, similar to the quality monitor. The pH
monitor is located in a separate panel, and the alarm is wired back the Control Panel.
Electrical Controls Summary
Shutdown alarms
Low quality product
Low feed pressure
Flow Alarm
High pump discharge pressure
High feed water temperature
Status indicator lights
Low feed pressure
Low quality
Flow Alarm
High pump discharge pressure
High feed water temperature
Product divert to drain valve open
Pretreatment lockout
Storage Tank Full
Switches
RO Run Hand-Off-Auto (HOA)
Alarm Silence
Auto Flush Selector Manual-Off-Auto (MOA)
Miscellaneous controls
Elapsed run time indicator
Alarm horn
Chemical pump receptacles