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Equipment Overview | Filter Pump Industries / Penguin Pump | Process Technology
Thermal Overload Protection
Thermal Overload Protection comes standard on all traditional style Process Technology over-the-side and bottom (L-shaped) industrial immersion heaters. Please check that these devices are properly installed to ensure safe operation of the heaters.
THE PROTECTOR 1 SERIES
The Protector 1 overtemperature control system utilizes a heat sensitive protector to detect overheat conditions. The protector, placed inside a thermowell, positioned in contact with the heater sheath, will cut power to the heater in the event of low liquid level.
THE PROTECTOR 2 AND 3 SERIES
The Protector 2 and Protector 3 systems provide the same reliable overtemperature 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 3 is designed for flexible lead or high temperature fluoropolymer (PTFE) heater applications only. DO NOT wire P3 or P8 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.
Heater Thermal Protection Chart
| PROTECTOR TYPE | TANK TEMP. °F (°C) | METAL | METAL FLEX RISER | QUARTZ | FLUOROPOLYMER | FLUOROPOLYMER FLEX RISER |
|---|---|---|---|---|---|---|
| Replaceable | to 180°F (82°C) | P1 | - | P1 | P1 to 180°F (82°C) | - |
| Replaceable | 180-230°F (82-110°C) | P4 | - | P4 | - | - |
| Replaceable | 230-300°F (110-150°C) | P5 | - | - | - | - |
Resettable Protectors Require Additional Control Components (consult factory)
| PROTECTOR TYPE | TANK TEMP. °F (°C) | METAL | METAL FLEX RISER | QUARTZ | FLUOROPOLYMER | FLUOROPOLYMER FLEX RISER |
|---|---|---|---|---|---|---|
| Resettable | to 180°F (82°C) | P2 | P2 | P2 | P2 to 180°F (82°C) | P3 |
| Resettable | 180-230°F (82-110°C) | P6 | P6 | P6 | P8 180-210°F (82-99°C) | P3 |
| Resettable | 230-300°F (110-150°C) | P7 | P7 | - | P3 210-250°F (99-121°C) | P3 |
Order replacement protectors by item number (below). P3 option not available on 8 and 9 kW elements. Lowest temperature replaceable style Protector standard unless otherwise designated.
Replaceable Thermal Protectors
| HEATER MODEL DESIGNATOR | ITEM NUMBER | HEATER MATERIAL | HEATER STYLE | TEMPERATURE RANGE |
|---|---|---|---|---|
| P1 | 6021-18-R | Metal | Over The Side | up to 180°F (82°C) |
| P4 | 6022-18-R | Metal | Over The Side | 180-230°F (82-110°C) |
| P5 | 6023-18-R | Metal | Over The Side | 230-300°F (110-150°C) |
| P1 | 6021-85-R | Metal | L Shaped | up to 180°F (82°C) |
| P4 | 6022-85-R | Metal | L Shaped | 180-230°F (82-110°C) |
| P5 | 6023-85-R | Metal | L Shaped | 230-300°F (110-150°C) |
| P1 | 6032-26-R | Fluoropolymer | Over The Side | up to 180°F (82°C) |
| P1 | 6032-48-R | Fluoropolymer | L Shaped | up to 180°F (82°C) |
| P1 | 6032-26-R | Quartz | Over The Side | up to 180°F (82°C) |
| P4 | 6033-26-R | Quartz | Over The Side | 180-230°F (82-110°C) |
Resettable Thermal Protectors
| HEATER MODEL DESIGNATOR | ITEM NUMBER | HEATER MATERIAL | HEATER STYLE | TEMPERATURE RANGE |
|---|---|---|---|---|
| P2 | 2804-18-R | Metal | Over The Side | up to 180°F (82°C) |
| P6 | 4047-18-R | Metal | Over The Side | 180-230°F (82-110°C) |
| P7 | 2805-18-R | Metal | Over The Side | 230-300°F (110-150°C) |
| P2 | 2804-85-R | Metal | L Shaped | up to 180°F (82°C) |
| P6 | 4047-85-R | Metal | L Shaped | 180-230°F (82-110°C) |
| P7 | 2805-85-R | Metal | L Shaped | 230-300°F (110-150°C) |
| P2 | 4575-26-R | Fluoropolymer | Over The Side | up to 180°F (82°C) |
| P8 | 5580-48-R | Fluoropolymer | Over The Side | 180-230°F (82-110°C) |
| P2 | 4575-48-R | Fluoropolymer | L Shaped | up to 180°F (82°C) |
| P8 | 5580-48-R | Fluoropolymer | L Shaped | 180-230°F (82-110°C) |
| P2 | 4575-26-R | Quartz | Over The Side | up to 180°F (82°C) |
| P6 | 5580-48-R | Quartz | Over The Side | 180-230°F (82-110°C) |
VOLTAGES AVAILABLE (MOST HEATERS AND CONTROLS)
Voltages are designated in Process Technology model numbers as follows:
| 120 volt = 1 | 240 volt = 2 | 380 volt = 3 | 480 volt = 4 | 415 volt = 5 |
| 600 volt = 6 | 400 volt = 7 | 208 volt = 8 | 220 volt = 9 | 200 volt = 0 |
Specify single or three phase when ordering. Consult factory for other voltages.
WARNING!
IGNITION SOURCE AND SHOCK HAZARD! ELECTRIC IMMERSION HEATERS WILL IGNITE MANY PLASTIC TANKS SUCH AS POLYPROPYLENE AND POLYETHYLENE, AND SUBJECT PERSONNEL TO SHOCK HAZARD IF NOT PROPERLY INSTALLED AND MAINTAINED.