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The transmission is the metal cylinder on top of the wiper basket and creates a vacuum-tight seal between the rotor of the wiper and the rest of the system.
It is composed of two bearings and a few gaskets.
The bearings should be lubricated every 4-6 months with 0.5mL of white oil. If crude oil contains sulfur (usually from using sulfur burners in the grow to prevent powdery mildew) this sulfur can cause rapid degradation of both the gaskets and bearings in the transmission.
While the transmission can be easily rebuilt by following SOP- Transmission Fix, it is not recommended to process crude oil that contains sulfur.
Contact Technical Support for more information.
The clamp gasket is designed to relieve excess pressure in case of malfunction in order to prevent permanent damage to the machine. Typically, this is caused by a dirty check valve and can be easily remedied by following SOP-Check Valve to rebuild the check valve. In addition, fouling of the check valve can be minimized by proper preparation of the material. Review SOP-Prep, and feel free to contact technical support for one-on-one consultation.
The compression nut is a hexagonal nut behind the pump head, after the stuffing box. This compression nut provides the compression on the packing material to make a tight seal between the rotor and the gear box of the pump. If this is not properly tightened, either product can leak out on the feed pump, air can leak in on the residue or distillate pumps, or white oil can be consumed at an excessive rate. Proper tightening of the compression nut will ensure a tight seal, but take care to not overtighten the compression nut, as this can compromise the packing material.
The compression nut is a hexagonal nut behind the pump head, after the stuffing box. This compression nut provides the compression on the packing material to make a tight seal between the rotor and the gear box of the pump.
If this is not properly tightened, either product can leak out on the feed pump, air can leak in on the residue or distillate pumps, or white oil can be consumed at an excessive rate.
Proper tightening of the compression nut will ensure a tight seal, but take care to not overtighten the compression nut, as this can compromise the packing material.
The Huber K6 is capable of both heating and cooling. The unit is composed of two halves, a lower cooling bath and an upper heating element with a recirculation pump and controller.
There is a data cable that connects the two halves, enabling the controller to control both halves. Ensure this data cable is snugly secured.
Finally, there is a three-position switch on the lower unit that must be in the “II” position (the upper position) in order for the bottom unit to be controlled by the controller.
In the event the system is open to the atmosphere while either the cold trap is cold or a temporary leak occurred, water vapor from the air around the machine can condense on the cold trap, forming ice. When a vacuum is applied, this ice will slowly sublimate (or turn into vapor) causing the vacuum to not go below the mid-to-low negative 1’s (between 1 mbar and 0.1 mbar).
This can easily be fixed by simply leaving the vacuum pump on with the gas ballast open. In addition, you can accelerate this process by changing the temperature of the setpoint of the cold trap chiller to 0 degrees C, and then changing the temperature back down to the minimum setting once it reaches 0 degrees.
The elevated temperature will supply the thermal energy necessary for the sublimation of the water and will reduce the time for the ice to disappear.
More information can be found in SOP – Vacuum Troubleshooting.
If you need additional assistance, please call technical support at +1 (206) 452-1130.
If the feed tank seizes (or stops) while the feed tank is full of oil, sometimes this can be remedied by:
If you have followed the above steps and this does not fix your problem, you may then try the following steps:
If your problem still persists, then try the following:
More information can be found in SOP – Gear Pump Clean.
If you need additional assistance, please call technical support at +1 (206) 452-1130.
Thermal transfer fluid can occasionally leak from a fitting that has become loosened over time.
*Please note: Due to the risk of breakage of any metal-to-glass hose connections, it is recommended that you call customer support BEFORE attempting to fix the leak. (important!)
For simple metal-to-metal hose connections, utilize two wrenches to tighten the fitting – one on the hose, and the other on the other component that remains stationary and acts as a backing to prevent applying torque to the rest of the system.
For more detailed information or one-on-one assistance, reach out to technical support at +1 (206) 452-1130.
Check valves can become clogged by physical debris in the product and require periodic cleaning in order to ensure proper operation. A dirty check valve can cause an intermittent feed rate of product into the evaporator, manifesting as a sinusoidal swing in vacuum pressure during the first pass. This can cause irregularities in system performance, so periodic preventative cleaning is highly recommended.
The check valve can be easily removed, disassembled, and soaked in a suitable solvent such as ethanol for proper cleaning.
Best practices for preventing the accumulation of debris within the product include:
More information can be found in SOP – Check Valve Clean.
If you need additional assistance, please call technical support at +1 (206) 452-1130.
