870 Series SCR Control Panel

OPTIONAL FEATURES:

□ Control Relays – These relays are activated by safety devices, such as a flow switch or remote shutoff.
□ Indicator Lights – Additional indicator lights may be specified for visual indication of system status, such as “LOW TEMPERATURE”.
□ Audible Alarm Package – Includes a horn, pilot light, latching relay and a push button for silencing the horn.
□ Low Liquid Cutoff – The relay is mounted and wired with sensing probe shipped loose for field installation.
□ Motor Starter – This package consists of a motor starter for pump motor start-up. Motor starter is internally mounted and field connected to the pump motor.
□ Special Controllers – The customer may specify the use of special process or over-temperature controllers for a different temperature range, sensor input, control mode, etc.
□ Panel Heater – A heater and thermostat are provided to prevent condensation and maintain minimum ambient temperature for electrical components.
□ Wire Markers – Identification markers are attached to both ends of all control and power wires.
□ Tagging of Internal Parts – Permanent tags are attached to the subpanel near internal parts and marked with component titles as noted on the wiring diagram.
□ Explosion-Resistant Panel – A cast aluminum enclosure is rated for Class I, Groups C & D and Class II, Groups E, F & G (NEMA 7, 9).
□ Purged Panels – Type Z for Class I, Division 2 areas; Type X for Class I, Division 1 areas
□ Special Coatings – Epoxy or other paints may be specified.
□ Stainless Steel Panel Enclosure (NEMA 4X) – This construction provides extra corrosion resistance for harsh environments¹