Irritrol MC-48E - Set Overflow Percentages; Set Flow Delay Time

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Set Overflow percentages
Step 1 – Place the Function dial to the FLOW SENSING position. Enable ow sensing if its disabled.
Step 2 – Select the station number being edited. While in the K Value/Size Code screen, press the button to advance
to the Overow screen. Press the button to advance the Station number.
Step 3 – Press the button to adjust the Overow percentage . This value will set the maximum ow value limit.
When actual ow reads above the maximum, the ow alarm LED will activate and an audible tone will beep
every 30 seconds. MC-E will also ash in the display which station posted a faulty ow reading.
The factory default Overow percentage is 50%. Underow is not monitored.
Set Flow Delay Time
Step 1 – Place the Function dial to the FLOW SENSING position. Enable ow sensing if its disabled.
Step 2 – Press the button to advance the display to the Underow/Overow screen.
Step 3 – Press the button to adjust the ow delay time. The ow delay time is the period that MC-E will wait
after activating a particular station before reading the ow. This delay period allows the irrigation system to
normalize to get an accurate ow reading. The default ow delay time is set at 1 minute but can be adjusted up
to 9 minutes using .
IMPORTANT! For stations with drip setup, use longer delay times of 6-9 minutes.
Step 4 – Press the button to advance to the next station number and adjust the remaining station’s ow delay.
IMPORTANT! Station 2 is no longer a regular station. Leave its settings at 0.
Clear Flow Alarms:
Press the button. Use the procedure below if pressing the button did not clear the alarms.
Step 1 – Place the Function dial to AUTO/RUN position.
Step 2 – Press the button. This process will clear all alarms except for unexpected ow alarm.
Clear Unexpected Flow Alarms:
Step 1 – To clear the unexpected ow alarm, disable the ow function by placing the function dial to the FLOW
SENSING position and press the button to deactivate ow
Step 2 – Press the button again to reactivate the ow function. By deactivating and activating the ow sensing, it
will the unexpected ow alarms.
Specications
Cabinet Dimensions:
Small Metal Cabinet Unit: (9.71” H) x (10.68” W) x (4.25” D) [(24.66 cm H) x (27.13 cm W) x (10.79 cm D)]
Large Metal Cabinet Unit: (12.37” H) x (14.32” W) x (4.75” D) [(31.42 cm H) x (36.37 cm W) x (12.06 cm D)]
Input Voltage:
Domestic: 115 VAC, 50/60 Hz; Secondary - 24 VAC, 50/60 Hz, 50VA Class 2 Transformer, UL and CSA Listed.
Export: 250 VAC, 50/60 Hz; Secondary - 24 VAC, 50/60 Hz, 50VA Class 2 Transformer, CE and TUV Listed.
Output Voltage:
Station Output Voltage: 24 VAC with 1.00 Amp Max
Maximum Master Valve Current: 1.00 Amp
Total Output Current to Valves: Not to Exceed 1.68 Amps including Master Valve/Pump Start
Storage Temperature:
4º F to 140º F (-20º C to 60º C)
Operating Temperature:
32º F to 160º F (0º C to 60º C)
Humidity:
95% RH, Non Condensing, @ 100º F (37.8º C)
Station Number Overow Percentage Limit
Flow Delay (Minutes)
Flow Value (Learned) Flow Unit