Process Technology NR Series, Non-Indicating Combination Controls

Description

**Combination control consists of gasketed plastic enclosure, thermostat, contactor and optional control transformer.

Product Features and Benefits:

IMPROVES PROCESS CONTROL: Large, easy to read dial. Provides general control for consistent plating and etch rates in most aqueous processes.

TEMPERATURE SENSOR: Fluoropolymer (FEP) covered, 5-foot (1.5m) copper bulb and capillary included standard with the control. Provides extended service in corrosive liquids. Ethylene glycol filled system.

CORROSION RESISTANT ENCLOSURE: Vapor tight, NEMA 1, IP23, flame retardant gasketed plastic enclosure with stainless steel hardware.

CERTIFICATIONS: cUL.

CAPACITIES:
• Large switching capacities from 30 to 150 amps for either 240 or 480 volts.
• Adjustable temperature range from 30°F to 220°F.
• +/- 5°F accuracy.
• 30°F (-1°C) to 150°F (65°C) ambient temperature range.
• 120, 208, 380, 415, 600 and other voltages available.
• Single or three phase.
• Control transformers required above 240 volts, recommended for 208 and 240 volt service.

SAFETY FEATURES:
• Pre-wired PI terminal blocks.
• Ground connection on wiring panel.

THERMAL PROTECTION SYSTEM: (Controller and Heater protection system must match)

PI – (Standard) The Protector 1 over-temperature control system utilizes a heat sensitive fuse to detect overheat conditions. The fuse, placed inside a thermowell, positioned in contact with the heater sheath, will cut power to the heater in the event of low liquid level.

PII & PIII – (Optional) The Protector 2 and Protector 3 systems provide the same reliable over temperature protection as the Protector 1; however, the control systems feature a heat sensing thermostat. Should the tank’s liquid level drop to a preset overheat point, the thermostat will trip and an audible alarm will sound, cutting power to the heater. This eliminates dangerous operating conditions. After filling the tank, the immersion heater can be quickly made operational by pushing the reset button on the control to restore power. Protector III is designed for flexible lead or high temperature fluoropolymer (PTFE) heater applications only. DO NOT wire P3 or PT-3 devices directly to power or heater load as a dangerous short circuit will result with irreparable damage to the heater. Please refer to wiring diagrams for proper installation.