Hide thumbs Also See for ECCO-T:

Advertisement

Quick Links

https://appliancetechmanuals.com
Service Manual for the Lang Models:
ECCO-T, ECCO-AP, ECCO-SII, ECCO-C, ECCO-PP, ECCO-PT,
Lang Manufacturing Company
6500 Merrill Creek Parkway
Everett, WA 98203
Phone: 1-800-224-5264, Fax: 1-425-349-2733
www.langworld.com
©Copyright 2000

Advertisement

Table of Contents
loading

Summary of Contents for Lang ECCO-T

  • Page 1 Service Manual for the Lang Models: ECCO-T, ECCO-AP, ECCO-SII, ECCO-C, ECCO-PP, ECCO-PT, Lang Manufacturing Company 6500 Merrill Creek Parkway Everett, WA 98203 Phone: 1-800-224-5264, Fax: 1-425-349-2733 www.langworld.com ©Copyright 2000...
  • Page 2: Table Of Contents

    https://appliancetechmanuals.com TABLE OF CONTENTS CHAPTER PAGE TABLE OF CONTENTS ...............1 READ FIRST..................2 EQUIPMENT DESCRIPTION ..............4 INSTALLATION..................6 START-UP ...................7 CONTROL PANEL LAYOUT..............8 PROGRAMMING TERMS..............14 PROGRAMMING .................15 GENERAL OPERATION ..............25 10. TYPICAL OPERATION ...............27 11. SEQUENCE OF OPERATION .............30 12. TROUBLESHOOTING .................34 13.
  • Page 3: Read First

    Never leave a chlorine sanitizer in contact with stainless steel surfaces longer than 10 minutes. Longer contact can cause corrosion. NOTICE Service on this, or any other, LANG appliance must be performed by qualified personnel only. Consult your authorized service station directory NOTICE or call the factory at 1-800-224-LANG (5264), or WWW.LANGWORLD.COM...
  • Page 4 BEFORE REPLACING ANY PARTS, DISCONNECT THE UNIT FROM THE ELECTRIC POWER SUPPLY. USE OF ANY REPLACEMENT PARTS OTHER THAN THOSE SUPPLIED BY CAUTION LANG OR THEIR AUTHORIZED DISTRIBUTORS CAN CAUSE BODILY INJURY TO THE OPERATOR AND DAMAGE TO THE EQUIPMENT AND WILL VOID ALL WARRANTIES.
  • Page 5: Equipment Description

    The ECCO oven is a forced air convection oven with a adjustable vented oven cavity. • A 1/3 HP fan motor drives the air. CONTROLS • The ECCO is available either with the Lang Accu-Temp (ECCO-T), Accu-Plus (ECCO-AP), Selectronic (ECCO-SII), “Purple” Computer (ECCO-C), “Purple Plus” Computer (ECCO-PP), and the “Platinum” Computer (ECCO-PT): • ECCO-T Easy to use manual control knobs.
  • Page 6 https://appliancetechmanuals.com EQUIPMENT DESCRIPTION CONT’D • ECCO-C Complete Computerized Controls with a Manual Override system. Programmable up to 10 products with four “tiers” for each program. Independent Shelf Timers for each Shelf. Load Control through use of Cooking Curves. Shelf Compensation Timing for uniform baking. Single speed fan.
  • Page 7: Installation

    15 days of delivery. All packing material should be kept for inspection. Do not return damaged merchandise to Lang Manufacturing Company. File your claim with the carrier. Prior to un-crating, move the oven as near its intended location as practical. The crating will help protect the unit from the physical damage normally associated with moving it through hallways and doorways.
  • Page 8: Start-Up

    START-UPS ECCO-AP / ECCO-C / ECCO-PP / ECCO-PT / ECCO-SII / ECCO-T Convection Oven Start-Up 1) Verify connections at plug and terminal block 2) Incoming Volt - Single Phase L1-L2______ Three Phase L1-L2______ L2-L3______ L3-L1______ 3) Amp draw L1______...
  • Page 9: Control Panel Layout

    CONTROL PANEL ECCO-T Vent Knob. Power switch. Light switch. Inspection light LIGHT only. Push toggle switch to the up position to inspect product. Switch will automatically return to the off position. PULSE FAN HI-SPEED Pulse fan switch. Pulse fan Dual speed switch.
  • Page 10 https://appliancetechmanuals.com CONTROL PANEL ECCO-AP Vent Knob. Power switch. LIGHT Light switch. Inspection light only. Push toggle switch to the up position to inspect product. Switch will automatically return to the off position. PULSE FAN HI-SPEED Dual speed switch. Pulse fan switch. Pulse fan Toggles the fan between setting will only turn the fan high and low speed.
  • Page 11 https://appliancetechmanuals.com CONTROL PANEL ECCO-SII Vent Knob. Power switch. LIGHT COOK N HOLD Light switch. Inspection light only. Cook N Hold switch. Push toggle switch to the up Oven will automatically position to inspect product. Switch drop to 140°F when oven will automatically return to the off timer stops timing down.
  • Page 12 https://appliancetechmanuals.com CONTROL PANEL LAYOUT ECCO-C Light switch Power Switch LED Display Tier Indicator: Displays what Tier (cycle) of a certain program is running. Product Button: Used to Shelf Button: Used to tell the program and store product oven which shelf the product into the computer.
  • Page 13 https://appliancetechmanuals.com CONTROL PANEL LAYOUT ECCO-PP LIGHTS Light switch. Inspection light only. Push toggle switch to the up position to inspect product. Switch will automatically return to the off position. POWER Power switch. AlphaNumeric Display. Shelf Select Button. Press Product Select Button. to select shelf which Press to select desired product will be placed.
  • Page 14 https://appliancetechmanuals.com CONTROL PANEL LAYOUT ECCO-PT Function keys. Keys are active when a program option is displayed on Alpha-Numeric Display. display. Cancel button. When Light switch. Inspection light only. scrolling through menu’s Push for light to come on. Light will this will allow you to back automatically turn off.
  • Page 15: Programming Terms

    https://appliancetechmanuals.com PROGRAMMING TERMS CONTROL PANEL BUTTONS 1 -0 Product Buttons. These are the buttons where the product programs are stored. Pressing a Product Button will heat the oven to the programmed temperature. Shelf Buttons. The control is capable of timing each shelf individually. Pressing a A - E Product Button then a Shelf Button will start the countdown timer.
  • Page 16: Programming

    https://appliancetechmanuals.com PROGRAMMING ECCO-C PROGRAMMING ACTION DISPLAY Turn the power switch on. If the oven is already on, enter turn it off and then back on. Quickly enter access code “R/C 1 6 2 7 3 8”. Do prod not hold the R/C button. St: 00 Select a Product number from 0-9.
  • Page 17 https://appliancetechmanuals.com PROGRAMMING ECCO-C CONT’D ECCO-C STATUS DISPLAY The Status Display informs the operator of the oven's status. It can be used as a countdown timer, shelf in use or internal oven temperature display during the cooking cycle (see ECCO-C Programming Codes pg. 16). The Display informs the operator when the oven is ready to bake, or if the oven is above or below the programmed temperature.
  • Page 18 https://appliancetechmanuals.com PROGRAMMING ECCO-C CONT’D ECCO-C PROGRAMMING CODES Below are codes, which will allow you to configure the display or aid in the operation, and troubleshooting of the oven. The readout must display "ENTER" before the computer will accept any programming code. If the readout displays any other word, reset the computer by pressing and holding the “R/C”...
  • Page 19 https://appliancetechmanuals.com PROGRAMMING ECCO-PP ACTION DISPLAY Turn the power switch on. If the oven is already on, press SELECT PRODUCT OR the Read / Clear key until the following screen is READ/CLEAR TO displayed. PROGRAM XX:XXPM XXXF Enter access code “1 6 2 7 3 8”. A: SET TIME B: SET DATE C: PROGRAM PRODUCTS...
  • Page 20 https://appliancetechmanuals.com PROGRAMMING ECCO-PT ACTION DISPLAY Step 1. Turn the power switch on. If the oven is already on, press the “CANCEL” key until the following screen is displayed. Step 2. Select: RUN OVEN TIME / DATE / PROGRAM. TIME / DATE / PROGRAM TIME DATE TEMP...
  • Page 21 https://appliancetechmanuals.com PROGRAMMING ECCO-PT CONT’D ACTION DISPLAY Step 5. Select: PROGRAM PRODUCTS EDIT READY ZONE PROGRAM PRODUCTS EDIT ACCESS CODE ENABLE MANUAL PRODUCT CONFIGURE TIME OF DAY ACTION DISPLAY Step 6. Select: CREATE NEW PRODUCT EDIT PRODUCT CREATE NEW PRODUCT DELETE PRODUCT EDIT PRODUCT ACTION DISPLAY...
  • Page 22 https://appliancetechmanuals.com PROGRAMMING ECCO-PT CONT’D ACTION DISPLAY Step 8. “SELECT PRODUCT NAME” is where you SELECT PRODUCT NAME APPETIZER A spell the name using the to select each letter. Then select “ENTER” to move KEYS TO SELECT the cursor to the next space and select a new letter.
  • Page 23 https://appliancetechmanuals.com PROGRAMMING ECCO-PT CONT’D ACTION DISPLAY Step 11. “SELECT COOKING CURVE”. Press SELECT COOKING CURVE 000 % to select numbers, select “ENTER” to move the cursor to the next space. Cooking curve may be any number between 0% and KEYS TO SELECT 100%.
  • Page 24 https://appliancetechmanuals.com PROGRAMMING ECCO-PT CONT’D ACTION DISPLAY Step 13. “SELECT PULSE RATE”. Press SELECT PULE RATE 100 % select numbers, select “ENTER” to move the cursor to the next space. 100% is the default. If this okay, select “ENTER” three KEYS TO SELECT times or “ACCEPT”...
  • Page 25 https://appliancetechmanuals.com PROGRAMMING ECCO-PT CONT’D ACTION DISPLAY Step 15. “CONTINUE TO NEXT TIER”. The cursor CONTINUE TO NEXT TIER automatically appears on “NO”. Select “ENTER” or “ACCEPT” to end programming KEYS TO SELECT or move the cursor with the “YES”. This will allow you to enter another tier to this program.
  • Page 26: General Operation

    https://appliancetechmanuals.com GENERAL OPERATIONS Convection ovens constantly circulate air over the product. This strips away the thin layer of moisture and cool air from the top of the product. Heat penetrates more quickly. Cooking times are shortened and cooking temperatures are usually reduced. To convert standard deck oven recipes to convection oven recipes, reduce the temperature 50 °F and the time by 25%.
  • Page 27 https://appliancetechmanuals.com GENERAL CONT’D ONE PAN TWO PAN THREE PAN FOUR PAN FIVE PAN...
  • Page 28: Typical Operation

    TYPICAL OPERATION ECCO-T ACTION RESULT Turn power switch to ON. Adjust proper temperature, between 140 & 450 Oven begins heating. degrees and allow to preheat up to 20 minutes. Open oven doors and insert product, set timer up to Timer begins counting down.
  • Page 29 https://appliancetechmanuals.com TYPICAL OPERATION CONT’D ECCO-C ACTION RESULT Turn power switch to ON. Control panel comes on, display says “88888” and then “ENTER”, motor starts. Press a product button. Display says “PREHT” (Preheat), oven begins to heat to the programmed temperature. Beeper sounds briefly.
  • Page 30 TYPICAL OPERATION CONT’D ECCO-PT ACTION RESULT Press the on switch. Control panel comes on, display says “LANG, Run Oven, Time Date Program. Select “Run Oven”. Display will show a list of product to choose. Select Product button next to Icon desired.
  • Page 31: Sequence Of Operation

    SEQUENCE OF OPERATION ECCO-T Power switch turned on. 240/208 VAC across Common terminals on power switch and “B” terminal of 12 pin Terminal block. 240/208 VAC to Common terminals of Motor relay. 240/24-volt transformer energized. 24 VAC across “C” and “D” (common) of 12 pin Terminal block.
  • Page 32 https://appliancetechmanuals.com SEQUENCE OF OPERATION ECCO-SII Power switch turned on. 240/208 VAC across Common terminals on power switch and “B” terminal of 12 pin Terminal block (through fuses). 240/208 VAC to Common terminals of Motor relay. 240/24-volt transformer energized. 24 VAC across “C” and “D” (common) of 24 pin Terminal block. 24 VAC across pins 1 &...
  • Page 33 https://appliancetechmanuals.com SEQUENCE OF OPERATION ECCO-C Power switch turned on. 240/208 VAC across Common terminals on power switch and “A” terminal of 24 pin. Terminal block. 240/208 VAC across any “A” and “B” terminal of 24 pin Terminal block. 240/208 VAC to Common terminals of Motor relay. 240/208 VAC across common terminals of Back-up toggle switch.
  • Page 34 https://appliancetechmanuals.com SEQUENCE OF OPERATION ECCO-PP/PT Oven plugged in. 208/240 VAC across any “A” and “B” terminal on the terminal block. 208/240 VAC to Control transformer (208-240VAC / 24-12 VAC) and Component transformer 240VAC / 24VAC. Transformers energize. 24 VAC to any “C” and “D” terminal on the terminal block. 24 / 12 VAC to Circuit Board (JP40).
  • Page 35: Troubleshooting

    TROUBLESHOOTING ECCO-T HINT: Confirm that all Circuit Breakers are in the “ON” position. NO MOTOR PROBABLE CAUSE CORRECTIVE ACTION Verify that Fan switch is in “ON” position (In pulse position motor Defective Fan Switch will only cycle when oven calls for heat).
  • Page 36 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-AP HINT: Confirm that all Circuit Breakers are in the “ON” position. NO MOTOR PROBABLE CAUSE CORRECTIVE ACTION Defective Fan Switch Verify that Fan switch is in “ON” position (In pulse position motor will only cycle when oven calls for heat). Defective Fuses Check fuses for normal operation.
  • Page 37 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-SII HINT: Confirm that all Circuit Breakers are in the “ON” position. NO MOTOR PROBABLE CAUSE CORRECTIVE ACTION Defective Fan Switch Verify that Fan switch is in “ON” position (In pulse position motor will only cycle when oven calls for heat). Defective Fuses Check Fuses for normal operation.
  • Page 38 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-SII CONT’D PROBABLE CAUSE CORRECTIVE ACTION Confirm that Heat Call light is on. Defective Circuit board If no light is detected: Check 12-position switch for normal operation. (See Technical Data for correct ratings) If light is detected: Check for 24VAC across heat output and “D” on 12 Pole terminal. If voltage is not present: Replace Circuit board.
  • Page 39 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-C To help troubleshoot the oven you should perform the following “Manual Override” test: Open drop down door located on the lower right side, directly below front panel. Turn back up toggle (on/off) switch to “on” position. Turn main power switch to “on” position. Check oven for normal operation.
  • Page 40 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-C CONT’D NO FAN-Manual Mode PROBABLE CAUSE CORRECTIVE ACTION Defective 208-240/24 VAC Check for 24 VAC on “C” and “D” of the terminal block. transformer If 24 VAC is not measured: Turn off and: Check secondary coil for 1 Ω. Check primary coil for 77 Ω.
  • Page 41 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-C CONT’D NO MOTOR Computer Mode PROBABLE CAUSE CORRECTIVE ACTION No 24 VAC on Interface board Check for 24 VAC at TP4 to common (“D”). If 24 VAC is not measured: Check for 24 VAC at “NC” contacts on back-up relay. If 24 VAC is measured: Check for 24 VAC at TP5.
  • Page 42 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-C CONT’D NO HEAT Computer Mode PROBABLE CAUSE CORRECTIVE ACTION No 24 VAC on Interface board Check for 24 VAC at TP4 to ground. If 24 VAC is not measured: Check for 24 VAC at “NC” contacts on back-up relay. If 24 VAC is measured: Check for 24 VAC at TP6.
  • Page 43 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-PP, ECCO-PT To help troubleshoot the oven you should perform the following “Manual Override” test: Open drop down door located on the lower right side, directly below front panel. Turn back up toggle (on/off) switch to “on” position. Turn main power switch to “on”...
  • Page 44 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-PP, ECCO-PT CONT’D NO MOTOR, MANUAL MODE PROBABLE CAUSE CORRECTIVE ACTION Confirm that toggle switch is in the “ON” position. Defective back-up toggle switch Check toggle switch for normal operation. Defective back-up relay Check for 208/240VAC at relay coil. If no voltage is present: Confirm that points are making.
  • Page 45 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-PP, ECCO-PT CONT’D NO HEAT, MANUAL MODE PROBABLE CAUSE CORRECTIVE ACTION Confirm that toggle switch is in the “ON” position. Defective back-up toggle switch Check toggle switch for normal operation. Defective back-up relay Check for 208/240VAC at relay coil. If no voltage is present: Confirm that points are making.
  • Page 46 https://appliancetechmanuals.com TROUBLESHOOTING ECCO-PP, ECCO-PT CONT’D NO HEAT, COMPUTER MODE IMPORTANT NOTICE: Before trying to trouble shoot “No Heat in Computer Mode” confirm that the oven heats in “Manual Mode”. PROBABLE CAUSE CORRECTIVE ACTION Check for 24VAC at JP11 (while oven is calling for heat). Defective output on CPU board If no voltage is present:...
  • Page 47: Technical Data

    https://appliancetechmanuals.com TECHNICAL DATA ELEMENT RESISTANCE 16 Ω 208 Volt 60 Ω 480 Volt TRANSFORMER RESISTANCE TRANSFORMER Input Primary Secondary Output 77 Ω 208/24 Volt 208/240 Volt 24 Volt 1Ω 630 Ω 1 Ω 240/12 Volt 208/240 Volt 12 Volt 208/240-24/12 208/240 Volt 208Volts 240Volts...
  • Page 48 https://appliancetechmanuals.com TECHNICAL DATA CONT’D AUTO/BYPASS SWITCH The Auto / Bypass and Energy switch are located below the controls behind a pull down access panel. • Normally in “OFF”. The “ON” position will interrupt Auto/Bypass switch power to the computer and allow use of the back-up thermostat.
  • Page 49 https://appliancetechmanuals.com TECHNICAL DATA CONT’D PROBE RESISTANCE TEMP RESISTANCE VOLT DROP TEMP RESISTANCE VOLT DROP 556 Ω 881 Ω 1.11 1.76 70° 290° 569 Ω 897 Ω 1.14 1.79 80° 300° 583 Ω 914 Ω 1.17 1.83 90° 310° 596 Ω 931 Ω...
  • Page 50 ECCO-C MODEL STRAPPING The Front Control panel of the Lang “Purple” computer must be configured to match the model of oven it is being installed in. To configure the front control panel, you must change the arrangement of the Strapping Bars located at the bottom of the circuit board just above the ribbon connection.
  • Page 51 https://appliancetechmanuals.com TECHNICAL DATA CONT’D ECCO-C TEST POINT LAYOUT TP 1 TP 2 TP 4 TP 3...
  • Page 52 https://appliancetechmanuals.com TECHNICAL DATA CONT’D ECCO-PP / PT TEST POINT LAYOUT MOTOR HIGH MOTOR LOW STEAM ECCO / GCCO LIGHTS POWER YELLOW YELLOW / RED POWER YELLOW YELLOW PURPLE PLUS YELLOW POWER SWITCH YELLOW ECCO / GCCO PURPLE PLUS YELLOW POWER SWITCH YELLOW DOOR SWITCH YELLOW...
  • Page 53: Wiring Diagrams

    WIRING DIAGRAM ECCO-T 208/240...
  • Page 54 WIRING DIAGRAM ECCO-T 480...
  • Page 55 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-AP 208/240...
  • Page 56 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-AP 480...
  • Page 57 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-SII 208/240...
  • Page 58 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-SII 480...
  • Page 59 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-C 208/240...
  • Page 60 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-C 480...
  • Page 61 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-PP 208/240...
  • Page 62 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-PP 480...
  • Page 63 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-PT 208/240...
  • Page 64 https://appliancetechmanuals.com WIRING DIAGRAM ECCO-PT 480...
  • Page 65: Parts List

    PARTS LIST ECCO-T DESCRIPTION PART NO. Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Element ECCO Oven 380 Volt 11000 Watts 11090-30 Motor 1/3 HP 480 Volt (Before F-90435) 30200-03 Motor 1/3 HP 115/208/240 Volt (Before F-90435)
  • Page 66 https://appliancetechmanuals.com PARTS LIST ECCO-AP DESCRIPTION PART NO. Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 11090-18 Motor 1/3 HP 480 Volt 2 Speed 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed 30200-17 Micro Switch, Oven Door 30301-02 Switch, Toggle, On-On 30303-06...
  • Page 67 https://appliancetechmanuals.com PARTS LIST ECCO-SII DESCRIPTION PART NO. Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt (Before F-79818 no pulse fan, Before H-90435 with pulse fan) 30200-03 Motor 1/3 HP 115/208/240 Volt (Before F-79818 no pulse fan, Before H-90435 with pulse fan) 30200-12 Motor 1/3 HP 480 Volt 2 Speed (After F-79819 no pulse fan, After H-90436 with pulse fan) 30200-16...
  • Page 68 https://appliancetechmanuals.com PARTS LIST ECCO-C DESCRIPTION PART NO. Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt 30200-03 Motor 1/3 HP 115/208/240 Volt 30200-12 Motor 1/3 HP 480 Volt 2 Speed (After Serial V-90436) 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed (After Serial V-90436) 30200-17...
  • Page 69 https://appliancetechmanuals.com PARTS LIST ECCO-C DESCRIPTION PART NO. Valve Manual Main Water Supply (Steam Units) 70400-02 Valve Manual Water Supply (Steam Units) 70402-08 Valve Solenoid 24/60V Water Supply (Steam Units) 70403-01 Regulator Water Supply (Steam Units) 70404-01 Handle Assembly, Single Handle Oven 70603-15 70701-19 Knob Thermostat 450°F Oven (not used before D-57000)
  • Page 70 https://appliancetechmanuals.com PARTS LIST ECCO-PP DESCRIPTION PART NO. Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt 2 Speed 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed 30200-17 Switch Micro Convection Oven Door 30301-02 Switch Toggle On-Off 30303-06...
  • Page 71 https://appliancetechmanuals.com PARTS LIST ECCO-PT DESCRIPTION PART NO. Element ECCO Oven 208/240 Volt 11000 Watts 11090-16 Element ECCO Oven 480 Volt 11000 Watts 11090-18 Motor 1/3 HP 480 Volt 2 Speed 30200-16 Motor 1/3 HP 208/240 Volt 2 Speed 30200-17 Switch Micro Convection Oven Door 30301-02 Switch Toggle Spring Return 30303-16...

This manual is also suitable for:

Ecco-apEcco-siiEcco-cEcco-ppEcco-pt

Table of Contents