McDonnell & Miller MM 286 Series 1575 Low Water Cut-Off - Manual (Page 3)

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SPECIFICATIONS
M a x i mum Pressure: 150 psi (10.5 kg/cm 2 )
Burner Delay (DOB): 0 to 60 seconds (Field Adjustabl e )
Ambient Te m p : 120˚F Max.
N OT E : The circuit board is protected with a sensor which will
shut down the unit if the temperature at the board ex c e e d s
176˚F (80˚C). The board will reset when the temperature at
the board drops below 167˚F (75˚C).
ELECTRICAL RATINGS & SWITCH RATINGS
Supply Probe Full Load (Amps) Locked Rotor (Amps) Pilot Duty (VA) Motor (HP)
Voltage Voltage NO (NC), VAC NO (NC), VAC NO (NC), VAC NO (NC), VAC
120 VAC 5 VAC 16 (5.8), 120 96 (34.8), 120 470 (290), 120 1 (1/4), 120
50/60 HZ maximum 8 (2.9), 240 48 (17.4), 240 470 (290), 240 1 (1/4), 240
M a x i mum System Water Te m p e r a t u r e : 406˚F (208˚C)
M a x i mum System Water Pressure: 250 psi (17.6 kg/cm
2 )
M a x i mum System Steam Pressure: 250 psi (17.6 kg/cm 2 )
All probes in the Series 1575 units are sent from the factory pre-cut to
9" length (229mm). Any of the probes can be used as the low water
cut-off level probe. The 9" length positions the probe at the low water
cut-off cast-in line on the chamber body. The remaining probes can be
‘cut to length’ using a metal cutting saw to achieve desired pump control
(pump on/pump off) and pump differential levels. Approximately 1 inch
of the metal probe rod should be exposed below the Teflon® coating.