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Summary of Contents for SCP SCIENCE DigiPREP
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DigiPREP KeyPad Controller Service Manual www.scpscience.com Providing Innovative Solutions to Analytical Chemists...
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Fax: +86 (10) 51905672 Disclaimer: Products are supplied for laboratory use only and should not be used for any household, medical or therapeutic application. SCP SCIENCE presumes that only trained and qualifi ed individuals, familiar with procedures suitable for the safe operation of these instruments, will handle them. Our customers are solely responsible for the safe operation, handling and use of these products.
LIGHT EMITTING DIODE & LCD ......................21 KEYPAD MALFUNCTION ........................22 FAILED KEYPAD BUTTONS ......................... 23 KEYPAD DIAGNOSTIC SECTION ......................23 UIPS POWER SUPPLY SECTION ......................24 HEATER DRIVE SECTION ........................27 THE BLOCK IS NOT HEATING UP ....................... 28 KeyPad SCP SCIENCE Version 1.0...
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Cleaning of a Major Spill ....................... 41 SPECIFICATIONS ..........................42 Environmental ..........................42 Electrical ............................42 ACCESSORIES ........................... 43 OPTIONS ............................44 ELECTRICAL SCHEMATIC ........................45 DigiPREP HT INSTRUCTION MANUAL INTRODUCTION ..........................47 CAUTIONS AND NOTES ........................48 WARRANTY ............................48 SYMBOLS ............................48 KeyPad SCP SCIENCE Version 1.0...
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ELECTRICAL SCHEMATIC ........................61 JR, MS, HP, HT SERVICE MANUAL DigiPREP JR BLOCK DESCRIPTION ....................62 DigiPREP JR Spare Part List ....................... 63 DigiPREP MS BLOCK DESCRIPTION ....................65 DigiPREP MS Spare Part List ...................... 66 DigiPREP HP BLOCK DESCRIPTION ....................67 DigiPREP HT BLOCK DESCRIPTION ....................
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Internal RTD, C176 ........................ 78 Heating Pad Procedures ......................78 Heating Pad Inspection Procedures ....................79 Heater Replacement Procedures ....................79 DigiPREP Dongle Testing Procedures ..................81 DigiPROBE Testing Procedures ....................81 DigiPREP TROUBLESHOOTING ......................81 DigiPROBE Error Displaying on Controller ..................81 System Functional with Dongle but not with DigiPROBE ...............
SCP SCIENCE only. The DigiPREP charged according to the prevailing Service KeyPad Controller is used to control the DigiPREP Parts Price List less distributor’s discount. Digestion Systems (Jr, MS, LS, HP, HT).
□ The system powers up correctly ___________________________________________ □ Cable connector looks fi ne (not bent) 4. Heater Drive Circuit Comments and observations: ___________________________________________ □ DigiPREP block is connected to the controller ___________________________________________ ___________________________________________ □ DigiPREP block is heating accordingly ___________________________________________ ___________________________________________ □...
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The controller is not functioning Page 31 when power switch is on 2. The block is not heating; The DigiPREP block is not • Ensure the DigiSET dongle is installed. heating up The heating block is not • The power cable is connected.
CAUTIONS & NOTES • Do not place the DigiPREP controller on a surface containing fl ammable material. Cautions, warnings, notes included throughout this manual. • DigiPREP block should be operated in a fume hood. CAUTION caution used emphasize • DigiPREP controller must be plugged into a...
SCIENCE service department to report damage 1. Verify that all components listed have been and to request service information (see page 88 for included: contact information). • DigiPREP keypad controller If damage is noted, do not attempt • Power cord WARNING to operate the instrument.
A "<" or ">" symbol displayed next to an item indicates that the current screen contains more items than can be shown. Use the arrow keys to move to the next item. The system powers up on the Banner Screen. KeyPad SCP SCIENCE Version 1.0...
UTILITIES SYSTEM < CALIBRATE There are three options: LANGUAGE, SYSTEM, JR- DigiPREP JR. (24 position- ambient to 180 and CALIBRATE. MS- DigiPREP MS (48 position- ambient to 180 LS- DigiPREPLS 72 position- ambient to 180 The calibration screen will be...
Not all thermometers have the same NOTE response time. Run the system using a DigiPROBE inserted in a DigiTUBE fi lled with water. On the keypad, press the target temperature key and set the target KeyPad SCP SCIENCE Version 1.0...
NOTE choose the number of calibration • The sample has evaporated. points as "0" and press enter to make the selection. • DigiPROBE is not submerged into the sample suffi ciently. KeyPad SCP SCIENCE Version 1.0...
• Ensure that all samples are positioned correctly Possible Causes: in the block before leaving the DigiPREP unattended. • The target temperature entered is greater than the boiling point of the sample. • Do not remove the rack while the DigiPROBE is in the sample.
DIAGNOSTICS TEST PROCEDURE If you are having trouble with the DigiPREP controller, follow the steps below and contact the service department. 1. Shut off power to DigiPREP keypad. 2. Ensure that DigiPROBE is installed and inserted into either the holding well or the sample.
SPECIFICATIONS DigiPREP KEYPAD ENVIRONMENTAL ELECTRICAL Relative humidity 30% to 80% Model Keypad Altitude Up to 2000m Voltage 115/230V ±10% Installation Category ll Amperage 13 A Pollution Degree 2 Frequency 50/60 Hz Ambient operating -5 °C to 40 °C temp. Maximum operating 85 °C...
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Panel Mount Connector 2-Pin Male Nylon Stand-off #6-32 x ¼” Flat Head Nylon Screw #6-32 X 1 “ Bottom Kydex ¼” Voltage Selector Switch Feet Flat Washer, Nylon #6 Screw Pan Phillips Head Tapping Screw #8 x ¾” KeyPad SCP SCIENCE Version 1.0...
CPU, which between components. Each part will be explained controls the DigiPREP block (Jr, MS, LS, HP or HT). in details in a different section of the document. (100- 260Vac)
• Ensure the power cord is fully inserted into its socket (see fi gure 2). SCP SCIENCE DigiPREP KEYPAD 10.0 • Verify that the power switch is in the ON position. • Remove the bottom plate by removing the four •...
CPU with help of a row and column detector. One should feel a "soft click" upon pressing a button. 5Vdc ROW1 ROW4 ROW2 ROW3 Shift Left COL1 COL2 Alarm Temperature Enter Time COL3 Shift Right COL4 FIGURE 8: KEYPAD ELECTRONIC DIAGRAM KeyPad SCP SCIENCE Version 1.0...
•Not pushed: less than 30 Mohms. • Select HEATER OFF and press ENTER (make If all the values are correct, the circuit is faulty. sure DigiPREP is connected). Change the KeyPad PCB. •Enter a time scale of 1 minute and press enter.
+12Vdc/0.8A. No selector switch is needed for 115 VAC or 230 VAC input supply. The +12Vdc voltage is then regulated to supply 5.0Vdc Digital and 50Vdc(AVCC) analog to the main circuits of the system. FIGURE 10: AC/DC CONVERTER KeyPad SCP SCIENCE Version 1.0...
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D3, D4, D5 and D6. You should read about 63Vdc for 120 Vac and 125 Vdc for 240 Vac. If not, replace the faulty diodes. KeyPad SCP SCIENCE Version 1.0...
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2. Diodes: D3, D4, D5 and D6 3. Test point TP1GND 4. U1 5. U3 pin 1 6. Test point TP4 (5.0Vdc supply) 7. Test point TP2 (Digital ground testpoint) 8. Test point TP3 (12Vdc supply) KeyPad SCP SCIENCE Version 1.0...
HEATER DRIVE SECTION This circuit controls the heater inside all types of DigiPREP blocks. It consists of an opto-isolated triac driven circuit. FIGURE 14: HEATER DRIVE CIRCUIT KeyPad SCP SCIENCE Version 1.0...
THE DigiPREP BLOCK IS NOT HEATING UP DigiPREP connection verifi cation • Ensure that the cable between the KeyPad controller and the heating block is correctly inserted on both sides. • Verify that the voltage selector of the heating block is properly set.
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2. D9 SMT LED (green) • After starting the system, turn the module 3. Test point TP9 upside down and see if the LED D9 (see 4. U8 fi gure 18 for position) is fl ashing. KeyPad SCP SCIENCE Version 1.0...
(toggling or not). Also refer to fi gure 20 for an example of what an be seen on a scope if If all of those tests are correct, please the control is toggling. refer to the DigiPREP block service page 62 for more details. • Make sure...
TP10 TP12 • Now on J9, short pins 2 and 3, short pins 4 and 5 and insert a 200 ohms 1% precision resistor between pins 3 and 4, you should read the following measurements: KeyPad SCP SCIENCE Version 1.0...
• Reconnect cable J9 to its header and verify if the system is always returning to the default setup (EN system is heating up accordingly and the block language, default heating block type etc.), replae the temperature feedback is correct. KeyPad PCB. KeyPad SCP SCIENCE Version 1.0...
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WIth the negative lead of a multimeter on pin 3 of J1 and its positive lead on pin 1 of J1, you should read a steady voltage value of at least 3.7 Vdc. If not, re- place the KeyPad PCB. KeyPad SCP SCIENCE Version 1.0...
INTRODUCTION DigiPREP digestion blocks are designed for laboratory use in the digestion and evaporation of a variety of samples, primarily water, wastewater, soil, and sludge samples. DigiPREP Jr, MS, LS, and HP blocks have a temperature range of ambient to 180°C.
CAUTIONS AND NOTES WARRANTY SCP SCIENCE warrants this product free Cautions, warnings, and notes are included from defect workmanship materials throughout this manual. for one (1) year from date of purchase. CAUTION caution used emphasize • Should unit malfunction, call...
DigiPREP controllers are • Do not place the DigiPREP blocks on a surface supplied with an electrical cord that has a grounding containing fl ammable material.
INSTALLATION SETTING UP Place the DigiPREP block in a fume hood. The UNPACKING controller must not be placed in the fume hood. With the controller’s power switch in the “off” Retain all packing material in case position, do the following:...
Install the PROBE in the port marked 'DigiPROBE' on the back of the DigiPREP block. If using to monitor and control the heating of the block via the sample temperature, insert the PROBE end into a control sample with the PROBE holder supporting the DigiPROBE.
DigiPREP JR, MS, LS, HP BLOCK DESCRIPTION DigiPREP Jr DigiPREP MS DigiPREP MS DigiPREP LS DigiPREP LS 1. DigiPROBE 4. Voltage selector connection port switch (115V or 230V) DigiPREP HP 2. Umbilical cable 5. DigiPROBE dongle connects to controller (4 pin male) 3.
fi rst turn the unit onto its side and check the bottom for an aluminium key. If the surface is still hot, contact with liquid 1. If your DigiPREP block has an aluminium key: may create steam that can scald you. WARNING...
SPECIFICATIONS DigiPREP HP, MS, JR, LS Environmental The main supply cord is constructed Relative humidity 30% to 80% of heat-resistant material and should NOTE Altitude Up to 2000m only be replaced by an equivalent or Installation Category ll better cord.
010-500-039 DigiPREP Fume Hood 010-500-049 DigiPREP Fume Hood II 010-500-051 Dongle for DigiSET port (2-pin female) 010-500-059 DigiPREP Fume Hood to fi t LS DigiPREP MS, 50ml 115V/230V 010-500-205 DigiPREP LS, 50ml 010-500-210 010-505-052 Dongle for DigiPROBE port (4-pin male)
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Disposable Watch Glass, 100ml (p500) 010-501-115 DigiPROBE, 6" for 100ml DigiPREP Jr, 100ml, 12 Pos (115V/230V) 010-501-210 Start up Kit for 100ml DigiPREP Jr 010-501-215 DigiPREP MS, 100ml, 30 Pos (115V/230V) 010-501-230 Start up Kit for 100ml DigiPREP MS 010-501-235...
DigiPREP HT is a high temperature digestion block capable of heating to 450 C. DigiPREP HT is available in four styles; DigiPREP HT 250 with 10 or 20 positions which are used with 250ml digestion tubes; DigiPREP HT 100 with 10 or 40 positions which are used with 100ml tubes.
DigiPREP HT is supplied with • Do not place the DigiPREP HT on a surface an umbilical cord that has a ground wire that is containing fl ammable material.
ASSEMBLY Assemble the DigiPREP HT system following the step listed below. Set the block proportion of the DigiPREP HT with the back sitting towards the front edge of a lab bench. Insert the aluminum ‘U’ support into the 2 square...
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(supplied with system) or the Universal Fume Scrubber (UFS option) DigiPREP HT system may now be placed in the fume hood. The picture shown on the left shows a typical digestion set up, the insert rack with digestion tubes in place, lowered onto the graphite heating block, the Tefl...
Next, ensure that DigiPREP controller is set to the correct settings for controlling DigiPREP to the 2 pin connector on the back of the DigiPREP block in use. (HT for all of DigiPREP HT high HT system to allow for the monitoring of temperature digestion blocks) With the controller’s...
3) Push heat defl ector in and fl ush at bottom. 4) Use fi ngers to push top snug to lip on Dual-Zone insert rack. 5) Place fi ngers through holes in top of rack to reach heat defl ector. KeyPad SCP SCIENCE Version 1.0...
Time to Temperature will depend and the 'time at temperature' cycle, it is assumed that the DigiPREP HT will begin the cycle from ambient on the last temperature reached – i.e. the previous setpoint. This becomes more complex, as the temperature.
Example: METHOD DEVELOPMENT On the second ramp and soak cycle, heat the FOR DIGESTING SAMPLES DigiPREP HT to 300 C, assuming that the fi rst Setpoint temperature was 200 A typical H digestion program is as follows. Suitable boiling chips or the supplied boiling rods...
Cleaning of minor surface spills affected areas. Turn off the system and unplug the DigiPREP HT from the power source. Allow the system to cool. The coated block surface may be cleaned with a...
SPECIFICATIONS DigiPREP HT ELECTRICAL ENVIRONMENTAL DigiPREP HT Model Relative humidity 30% to 80% Voltage 230V ±5% Altitude Up to 200m Installation Category ll Power 3362W 40 and 20 posi- tion Pollution Degree 2 Power 3000W / 10 position Ambient operating -5°C to 40°C...
DigiPREP JR BLOCK DESCRIPTION 1. DigiPROBE Connector-Connection port sample volume is reached. DigiSET for DigiPROBE. DigiPROBE will allow dongle must be installed to run DigiPREP Jr without the DigiSET option. direct monitoring and control based on actual sample temperature. DigiPROBE 5.
DigiPROBE Dongle must be installed to run the option. DigiPREP MS without the DigiPROBE 5. DigiPREP Controller – DigiPREP MS is option. designed to be used with DigiPREP 2. Cable Connector – Connection port for KeyPad* or Touch Screen* controller the DigiPREP MS umbilical cable to (*Sold separately).
DigiPROBE Dongle must be installed to run the option. DigiPREP MS without the DigiPROBE 5. DigiPREP Controller – DigiPREP MS is option. designed to be used with DigiPREP 2. Cable Connector – Connection port for KeyPad* or Touch Screen* controller the DigiPREP MS umbilical cable to (*Sold separately).
7 pins. The footprint 2. Dual Zone Tube Rack size is approximately the same as NOTE that of a DigiPREP Dongle. If the 3. DigiPREP Controller – DigiPREP HT is instrument has 9 pins on the umbilical designed to be used with DigiPREP cord, please refer to fi...
P616 White Corian Top Fits both 250 and 100 HT models S127 House for HT Used in both 250 and 100 HT models C398 DigiPREP HT Label for front of instrument S128 Heater pan Assembly Used in both 250 and 100 HT models...
DigiPREP LS SPARE PARTS LIST C176 RTD Returns temperature signals G108 Graphite LS block coated Tefl on coated LS block C630 Label, DigiPREP LS Attached to front of instrument M180 Screws to Secure Feet All blocks except COD P200 Corian Ring Support All DigiPREPs...
If you do not fi nd instructions for your model, continue reading. REMOVING THE CORIAN RING 1. Turn the DigiPREP Block on its side to obtain the key 3. Push the aluminium T into the slot until the Corian ring begins to lift.
Corian ring before removing the block. 1. Flip the unit upside-down on a soft surface and remove the 4 black caps. DigiPREP TESTS AND REPLACEMENT PROCEDURES 2. Using a 3/16-inch (4.5mm) Hex key, remove VOLTAGE SELECTOR SWITCH, E239 the 4 screws and washers that secure the graphite block to the instrument housing.
Like the E106, there is no polarity to this device— simply connect one end to the wire that runs to pin 2 of the voltage selector switch, and the other side to pin 7 of the umbilical cord KeyPad SCP SCIENCE Version 1.0...
(see table on page 88). VOLTAGE SELECTOR MODEL RESISTANCE SWITCH POSITION UMBILICAL CORDS, S104 115V 18 ± 2 DigiPREP Jr 230V 71 ± 2 The S104 umbilical harness is the power, and 115V 15 ± 2 communication medium between the block and DigiPREP MS 230V 57...
If you cannot read a resistance, visually inspect the 2. Measure between pin 4 (ground) and the wires running from the DigiPREP dongle port to the graphite block. This should return continuity. RTD, as well as the wires from the port to the umbili- Ensure you measure in a location that is not cal cord.
Notice the white acid residue. Damage such as this is not covered under warranty as it is caused by an acid spill or sample boil-over or not cleaning a major spill promptly. KeyPad SCP SCIENCE Version 1.0...
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7. Check the resistance of the heater between pin 7 and pin 9 to ensure that the heater has been properly reconnected. Consult the following table of resistances to ensure the correct values: KeyPad SCP SCIENCE Version 1.0...
16 ± 2 HEATER DOES NOT HEAT UP, TEMPERATURE DISPLAYS BUT DOES NOT CHANGE DigiPREP DONGLE TESTING PROCEDURES Ensure the dongle is functioning correctly, by 1. Ensure the umbilical cord is fully inserted into measuring continuity across pins 3 and 4, and pins 1 the controller.
BREAKER SWITCH ON CONTROLLER TRIPS ON THE START OF DIGESTION 1. Ensure the 4-pin dongle is completely fastened to the DigiPREP digestion block. 1. Perform the over-temperature protection device replacement instructions on page 84. It is 2. Perform the internal RTD test on page 86.
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