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Resumen del manual
Install rear support bracket and screws as shown. Each stacking kit requires that two brackets be mounted on the backside only. One bracket near the strain reliefandoneat the opposite end. 7. Refer to Cleaning Instructions for cleaning of stacking spacers and cleaning between units. FIGURE 1 ¡IIP « Remove End Caps & Screws Before Installing Kit - 5 5. OPERATION 1. The controls that operate the unit, heaters and conveyor are located on the front left side of the unit. 2. The On/Off switch is used to turn the unit on or off. Once the unit is turned on the conveyor will automatically run. Warning: Ensure no hands, tools or parts are located on the conveyor as injury will result when unit is turned on. 3. The control display (oval keypad) is used to control top and bottom heat only. The control settings allow for separate upper and lower zone control. The settings for upper and lower zones are 1 through 15; 1 being coolest and 15 being hottest setting. (See control operation below) 4. Note: Before moving the On/Off switch to the “On” position, please read the following statements: Caution The unit's external surface temperatures will be hot. Use caution when touching these areas to avoid injury. Warning The white ceramic heaters operate at high temperatures. Do not touch elements after power is applied to the elements red color changing decal from red to black. The decal will remain black until the element falls below the transition temperature where it will then return to its original red color. However, the element even if red will still be extremely hot. This color changing feature is used ONLYfor determining if element is operating properly. 5. The deflector curtains located at the entrance and exit of the unit are used to contain the heat inside the unit, as well as keep any forced drafts from entering the unit. These curtains aid in efficient operation of the heaters and can be adjusted to increase or decrease the entrance and exit height. These curtains should be adjusted to the minimum height required above the conveyor for the productyou are heating. Control Operation This oven has 3 heating zones, 2 on top, and a bottom one. The 2 top zones share the same parameters (set point, probe offsets, etc.) The bottom zone is completely independent of the top one. 6 USER INTERFACE There are 4 keys: Bottom Zone, Top Zone, Up, and Down. There are also 5 status LEDs: 2 that indicate the currently selected Zone; and 2 that indicate the zone Heater output state; and 1 for the Alarm conditions. OPERATINGMODES DISPLAY • Set point temperature is displayed as a range: ¡^,0 0,..., |J4], H5]. ^corresponds to the lowest sensor temperature and |T5] corresponds to thehighesfsensortemperature. • Thefactorydefaultsettingis8. • Once the settings are changed and the unit is turned off, these new settings will remain in memory and appear in the display once the unit is turned on. PREHEATMODE • Unit powers up in this state • Unit displays[Lo]and the active bottom and active top LEDs are on whenever the corresponding zone output is active. • A normal press of Bottom Zone key selects this zone (its LED lights up) and display shows its current set point for 5 seconds • A normal press of Top Zone key selects this zone (its LED lights up) and display shows its current set point for 5 seconds • Up and Down keys are used to change set point of current zone. Set point is displayed for 5 seconds after last Up or Down key press, then normal display resumes. Default set points are defined in Low-level parameters. • Preheat state ends when both top and bottom zones are within the Low Temperature threshold defined in Low-level programming. READYMODE • Unit displays [rdy] and the active bottom and active top LEDs are on whenever the corresponding zone output is active. • All keys work in the same fashion as for the Preheat mode • Ready state ends when one of the top or bottom zones fall below the Low Temperature threshold defined in Low-level programming (unit then goes back to Preheat mode) 7 SPECIALFEATURES ALARMS Zone Probe Error • Heater probe is disconnected or defective • Normal user interface operation applies, but heater output remains inoperative • Display flashes Alarm LED as well as an Alarm ID: 'jit ^Ofor Zone 1 (Bottom probe) 'jit |AL2lforZone2 (Top, probe A) -jit lAL3lforZone3 (Top, probe B) • Alarm shuts down all outputs • Probe must be replaced or re-connected to allow normal use High Temperature Error • Heater element is too hot, most likely due to external SSR that failed short • Display flashes Alarm LED as well as an Alarm ID: 'jit |AL4|forZone 1 (Bottom probe) 'jit |AL5|forZone2 (Top, probeA) ft |AL6|forZone3 (Top, probe B) • Alarm shuts down heater regulation. • The alarm threshold temperature is Low-level programmable • Algorithm: 'jit In normal use, if temperature ever goes above (set point + threshold), High Temperature Error is immediately triggered...
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