Differences

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--- ht500:service-guide [2016/03/24 10:55]
Markus Bürgener obsolete chapters removed / adaptations to new features
+++ ht500:service-guide [2016/05/20 12:14]
Markus Bürgener [Changing the nozzle tip] adapted to ht500
@@ Line 35: / Line 35: @@
 </WRAP>
-[{{:reprap-industrial-v1:wi_v105-v110_logdownload.png?400|Downloading the log files via the web interface (same procedure for software versions v1.0.5 and v1.1.0). Please remember opening the //Setup// tab first.}}]
+[{{:reprap-industrial-v1:wi_v105-v110_logdownload.png?400|Downloading the log files via the web interface. Please remember opening the //Setup// tab first.}}]
 </WRAP>
 </WRAP>
@@ Line 392: / Line 392: @@
 ==== Shaft lubrication ====
-<WRAP note>
+All slide bearings of the HT500 are equipped with dry-run linear slide bearings. Nonetheless, the shafts may accumulate dirt or condensation which may lead to stick-and-slip effects on the bearings, especially at the Z-axis. Slightly Lubricating/Cleaning the shafts may then be necessary.
-NOTICE
-The following only applies to hardware revisions up to 1.1.0.\\ Later hardware revisions are equipped with new slide bearings and do not need any lubrication.
-</WRAP>
-All slide bearings of the HT500 are equipped with dry-run linear slide bearings. Nonetheless, the permanent temperature variation inside the build chamber may lead to stick-and-slip effects on the bearings, especially at the Z-axis. Lubricating the shafts may then be necessary.
 <WRAP clear></WRAP>
 === Required tools ===
@@ Line 516: / Line 511: @@
 === Required tools ===
-  * Allen wrench #1.5
+  * open-jaw wrench size 8
-  * 2x open-jaw wrench size 8
+  * open-jaw wrench size 4
 === Additional information ===
 {{anchor:sg02}}
 [[{|width: 15em}#Cleaning recommendation|Cleaning recommendation]]\\
-[[{|width: 15em}reprap-industrial-v1:software-version-v1.1.0-operation-and-commissioning#omc131|Software manual - filament change]]  [[{|width: 15em}reprap-industrial-v1:software-version-v1.1.0-operation-and-commissioning#omc14t05|Software manual - expert control]]
+[[{|width: 15em}reprap-industrial-v1:software-version-v1.1.0-operation-and-commissioning#omc131|Software manual - filament change]]\\  [[{|width: 15em}reprap-industrial-v1:software-version-v1.1.0-operation-and-commissioning#omc14t05|Software manual - expert control]]
 <WRAP clear></WRAP>
@@ Line 539: / Line 534: @@
 <WRAP group>
 <WRAP half column>
-  * Loosen the two set screws at the hot end mount with a #1.5 Allen wrench.
+  * Loosen the barrel set screw at the hot end mount.
 </WRAP>
 <WRAP half column>
-[{{:reprap-industrial-v1:mtc_loosensetscrewheater_2.png?400|Loosening the hot-end mount set screws is mandatory to avoid breaking the glued connection of barrel and melter.}}]
+[{{:ht500:coming_soon.png?400|Loosening the hot-end mount set screw is mandatory to avoid damaging the barrel.}}]
 </WRAP>
 </WRAP>
@@ Line 553: / Line 548: @@
 NOTICE
-Do not loosen the nozzle tip without loosening the barrel set screws and countering the melter. Distorting the barrel may damage the glued connection.\\
+Do not loosen the nozzle tip without loosening the barrel set screw and countering the barrel. Distorting the barrel may damage it. The barrel must then be replaced.\\
 If solidified material hinders loosening the nozzle tip effortlessly, heat up the extruder to the specific extrusion temperature and loosen the tip 2 or 3 turns. **Do not** unscrew the heated tip totally. Dropping the hot nozzle tip will damage the acrylic bottom.
 Afterwards, turn the extruder off and wait until it has cooled down before completely removing the nozzle.
 </WRAP>
-  * Loosen and remove the nozzle tip with a size 8 wrench while countering with another size 8 wrench at the hex section of the melter.
+  * Loosen and remove the nozzle tip with a size 8 wrench while countering with a size 4 wrench at the width flat of the barrel.
 </WRAP>
 <WRAP half column>
-[{{:reprap-industrial-v1:sg_loosennoozletip_marked.png?400|Unscrewing and fastening the nozzle tip requires attention not to overwinde and sheer off the thread.}}]
+[{{:ht500:coming_soon.png?400|Unscrewing and fastening the nozzle tip requires attention not to overwinde and sheer off the thread.}}]
 </WRAP>
 </WRAP>
@@ Line 572: / Line 567: @@
 NOTICE
-Overtightening the nozzle tip may shear off the thread. Distorting the barrel may damage the glued connection of the barrel and the melter.\\ **Do not** fasten the nozzle tip without countering.
+Overtightening the nozzle tip may shear off the thread. \\ **Do not** fasten the nozzle tip without countering.
 </WRAP>
   * Carefully fasten the nozzle tip with a size 8 wrench while countering with another size 8 wrench at the melter.
@@ Line 697: / Line 692: @@
 <WRAP clear></WRAP>
-==== Cooling water pump ====
+==== Refilling the cooling circuit ====
+Temperature fluctuation cannot be avoided due to the operating conditions of the HT500. The different thermal expansion of the materials causes minimal leakage at the cooling circuit's connections which makes refilling the circuit necessary approximately every four weeks. To refill the coolant circuit, follow the instructions given below.
 === Required tools ===
@@ Line 703: / Line 699: @@
   * Allen wrench #2.5
 ¹<wrap lo> Order directly via [[sales@kuehlingkuehling.de]], the manufacturer's webshop (http://innovatek.de, manufacturer part number: 500473) or related distributors.</wrap>
-=== Demounting and refilling ===
+=== Checking the cooling circuit ===
+<WRAP note>
+NOTICE
+Lack of coolant may lead to damage of the affected components, especially the LEDs. Too much air in the cooling circuit leads to clogging of the copper connectors due to oxidation.\\
+Check the cooling circuit regularly for excess amounts of gas bubbles.
+</WRAP>
+The amount of gas bubbles in the cooling circuit is the indicator for refilling. A small amount of bubbles always circles the hoses and can be considered normal.
+To asses whether the cooling circuit must be refilled, check the following:
+  * The bubbles are small and running freely -> there is no need for refilling the cooling circuit.
+  * Bubbles reach the size of the hose's diameter, are sticking in places and do not disappear a few minutes after switching the build chamber on -> refill as described below.
+=== Demounting and refilling the pump ===
 <WRAP group>
 <WRAP half column>
@@ Line 719: / Line 729: @@
 <WRAP half column>
 [{{:reprap-industrial-v1:mtc_coolingwaterpump_1.png?400|Cooling water pump mounted in the electronic chamber.}}]
-[{{:reprap-industrial-v1:mtc_echamberbackview.png?400|Holding screws of cooling water pump.}}]
+[{{:ht500:mtc_coolingwaterpumpmount.png?400|Holding screws of cooling water pump at the rear cover of the electronic chamber.}}]
 <WRAP clear></WRAP>
-[{{:reprap-industrial-v1:mtc_coolingwaterpumpopenlid.png?400|Opening/closing the pump's lid.}}]
+[{{:ht500:mtc_coolingwaterpumpopenlid.png?400|Opening/closing the pump's lid.}}]
-[{{:reprap-industrial-v1:mtc_coolingwaterpumprefill.png?400|Level indication of the cooling water pump.}}]
+[{{:ht500:mtc_coolingwaterpumprefill.png?400|Level indication of the cooling water pump.}}]
 </WRAP>
 </WRAP>

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