SentroTech Vertical Tube Furnace STT-1700, 1.5" x 18" Zone, USA, Barely-used!

Description

Very Nice SentroTech brand Vertical Tube Furnace #STT-1700-15.-18.  Tube size is 1.5" i.d. with 18" long Heated Zone.
Unit is made in USA, and has excellent craftsmanship.  Sturdy, Clean, and Heavy-Duty.  Manufacturer told us that these sold for over ,000 each when new!!!
Units are in EXCELLENT Condition!!! Barely Used!!! and Almost perfect!!!  Tested 100%!!!  No Problems!
100% Guaranteed, with 30-day Warranty.  Ready and available for Immediate Shipping from USA (Florida)!!!
Price is for ONE (1) furnace.  There are two identical units available.  Buy both and get 15% off the total!!!
Overall height is 55.5" tall.  Width is 20".  Depth (front to back) is 26".  VERY HEAVY (estimate over 600 pounds).
Ceramic (alumina?) tube is  ~40" long, with 1-13/16" Outside Diameter.  One unit has minor chipping on tube at lower end (see photo).
No dents, major scratches, or rust on cabinets.  There are a few scuffs and nicks.  "Worst one" is shown in last photo.  Insulation is in Excellent condition.
Digital displays are bright, with no wear on keypads.  Controller is YUDIAN 5097 series (printed User Manual included).
Units are labeled 208 VAC - 60-amp, but will work fine on 220 or 240 volt power (I have verified this with the manufacturer).  Manufactured in USA, and the company is still in business, and can be reached for information, or parts & service if it should become necessary.
These were tested on a 240 VAC circuit with a 40-amp breaker.  They both heated smoothly to 1,200 degrees C.  I did not test higher because my supply wiring (10 AWG) is under-size for power needed, and was starting to get hot.  Units were held at 1200C for one hour with no problems.  Amazingly, the outside of the cabinet remained cool - OK to touch with hand - the whole time due to having Four internal cooling fans, and excellent insulation!  Above about 150 degrees, the actual temperature followed the set-point very well (usually +/- less than 5 degrees).  Note that the high-temp (1700) thermocouple is not so accurate at temperatures below 200C.
I found the controller to be confusing at first, but quickly learned how it works.  HINT - first number (C1, C2, C3, etc) is the Starting temperature, and the corresponding time (T1, T2, etc.) is how long it takes to get to NEXT temperature.  So, if you want to hold at a given temperature, you must enter is twice.  C is for control parameter (Temperature), and t is for time.  For example, setting program to C1 (100), t1 (90), C2 (1,000), t2 (60), C3 (1,000), t3 (120), C4 (200), t4 (-121) will take it from ambient (100) to 1,000 degrees over the course of 90 minutes (10 degrees per minute), then hold at 1,000C for 60 minutes, then drop to 200C over 2 hours,a nd shut itself off.  Setting negative times has special functions (see manual).  Setting time to negative 121 ends program and it stops.
One more thing - units will be shipped laying-down on their backs.  This caused the thermocouples to slide away from the senter of the furnace.  Remember to push the TC back in all the way before using.
Shipping by LTL truck freight to most commercial locations in US lower 48 states.  Send zip code to get exact freight cost prior to purchase.  Below are some Freight ESTIMATES for this “Large” item.  Unit will be securely packaged on a pallet, and covered with a wooden crate for protection.  Tube will be lowered to bottom position for shipping.
Atlanta 5, Miami 0, Dallas 0, Chicago 0, Buffalo 0, Seattle 0, Los Angeles 0, Sacramento 0, Butte 7, Sheboygan 0.
Prices vary week-to-week.
Lift-gate service, Residential delivery, and Limited-access all require additional charge.   Please request these additional services at time of purchase.  If additional fees are billed to us by freight company after shipping, you agree to pay these additional charges which will be invoiced separately.  These charges are usually each, or less.  Note that many University locations are classified as "limited access" by the freight company, unless sent to "Central Receiving". PLEASE INQUIRE whether additional freight charges will apply BEFORE purchase if this is a possible concern.
Warranty Info:
Units are guaranteed to be in as-described condition at time of purchase, despite being listed as "Seller does not accept returns".  That is just to protect against Buyers who "change their mind".  Returns will be accepted only if there are defects.  Do not accept shipment if there is any obvious shipping damage.  Units are guaranteed for 30 days.  In the unlikely event that there is a failure, please contact us immediately, before opening an eBay return.  We will try to help solve the defect, with a repair or replacement, if possible.  If a return is needed, the return shipping cost and packaging will be paid by Buyer.  We can help arrange a freight pickup.  Warranty does NOT include damage caused by improper use or installation, negligence, accident, or abuse.  Damage or melt-down resulting from over-temperature (above 1700C) is not covered.  Please be sure you understand how to set the controls before use, and always monitor operation during use.  The ceramic tubes are NOT covered by the warranty.  Incidental damage to surrounding property or persons is not covered by warranty.
WARNING!!!  This is a highly-sophisticated and potentially dangerous piece of scientific equipment!!!  Installation and operation must be performed by trained and qualified personnel.  Serious injury, or even death, can occur if safety precautions are not followed.  There is a risk of fire, burns, or electrical shock.  High temperature and high voltage are involved.  Seller shall not be held liable for any injuries or damage caused by use of this unit.  By purchasing this unit, Buyer acknowledges understanding and acceptance of these warnings.