Safety Summary & Control Device Setting - Hitachi WEH-6E Installation And Operation Manual

SAFETY SUMMARY & CONTROL DEVICE SETTING
11 SAFETY SUMMARY & CONTROL DEVICE SETTING

Protection:
• Low water pressure switch (LWPS).
• This switch cuts out the operation of the WEH when the water pressure inside hydraulic circuit is below than 1 bar.
• Thermostat cut-out.
• This switch cut out the operation on the WEH when the water temperature inside WEH exceed 85ºC
Low Water Pressure Switch (LWPS)
Resistances hole fixing flare nut
8 PMML0199A rev.4 - 12/2016
Model
Cut-Out
Max. working pressure
Thermostat
Cut-Out
Contactors
Current
Voltage
Coil Voltaje
Heating resistances
Electric Power (3 resistances)
Voltage
Ø
Specific heat load
Material
Resistance cord
UNITS WEH-6E
Automatic Reset
MPa <0.1
MPa 0.5
Manual Reset
ºC 85
A 20 (AC1)
V 230V
V 207~253V
kW 2.0 (x3)
V 230 V
mm 8
"G 2 (brass)
W/cm2 8
AISI-316L
Ni-Cr 80/20 Ø 0.45mm