10.0
OUTPUT ADJUSTMENT
The speed of the pumping mechanism is adjustable from 0.01 to 100 % motor speed (0.01 RPM to 100 RPM).
11.0 DFD (Diaphragm Failure Detection)
The MD1 is equipped with a Diaphragm Failure Detection System which is designed to stop pump and provide an
output alarm in event diaphragm should rupture and chemical enters pump head.
This system is capable of detecting presence of a large number of chemicals including Sodium Hypochlorite
(Chlorine), Hydrochloric (muriatic) Acid, Sodium Hydroxide, and many others. System will not be triggered by
water (rain, condensation, etc.) or lubricants.
If system has detected chemical, pump diaphragm must be replaced and pump head must be thoroughly cleaned.
Failure to clean pump head will void warranty.
If DFD alarm occurs, pump will stop, close an alarm output, and screen will flash DFD with an alarm icon.
DFD Sensors
Inlet
(suction)
Pump
Head
Outlet
(discharge)
Built -In DFD
Diaphragm Failure
Detection
Page 14
®
CHEM-FEED MD1
Pump
Head
DFD
Fluid Channel
