Hydrolevel 270SV - Manual (Page 2)

MAINTENANCE
Remove and inspect probe annually. Clean any sediment or scale from the probe using a scouring pad or steel wool.
TROUBLE SHOOTING
IF THE PUMP DOES NOT OPERATE
1. Using a voltage meter, isolate the problem to determine if the 270SV High Limit Control is breaking the circuit.
2. Check to insure that the water level is below the probe and that the tee is not collecting water which could be sensed
by the probe.
3. Remove power and recheck wiring.
4. Remove power and check for adequate clearance from the probe to any surface inside the boiler or tee.
IF THE PUMP DOES NOT SHUT DOWN WHEN WATER REACHES THE HIGH LIMIT
1. Make sure that the high water level is in contact with the probe.
2. Ensure that the probe lead wire is fastened securely.
3. Check for proper ground between the probe and the boiler shell or tee. Excessive use of Teflon tape or sealing compound may
insulate the probe from ground.
4. Recheck wiring and test for correct incoming voltage.
P.O. Box 1847
New Haven, CT 06508
Phone: (203) 776-0473
FAX: (203) 773-1019
45-2700
MAXIMUM PRESSURE: 250 PSI
INPUT VOLTAGE: 120 VAC, 60 HZ
SWITCH RATINGS: .25 hp @ 120 VAC
RESISTIVE LOAD: 20 A
SWITCH CONTACTS: SPDT
4. Wiring
Specifications
TYPICAL WATER FEED CONTROL CIRCUIT
The Safgard 270SV High Limit wires in series with the system’s water
feed circuit.
STEP 1
Connect the hot lead of input voltage
(120 VAC, 60 Hz) to terminal H and the
neutral lead to terminal GN. STEP 2
Connect the Feed/Pump Controller to
terminal C. Connect the Pump/Feeder to
terminal NC. When water reaches the
High Limit, contacts C-NC will open,
interrupting power to the Pump/Feeder.
Important: If the current of the Pump/
Feeder exceeds 15 amps, a suitable
relay/starter should be installed. STEP 3
Optional High Water Alarm
Select an alarm with the same operating
voltage as the Pump/Feeder. Connect the
hot lead of the alarm to terminal NO.
Connect the neutral lead to the Feed cir-
cuit neutral. When water reaches the
High Limit, contact C-NO will close,
powering the alarm.