Laurell Technologies systems have been tested for safety and electromagnetic compatibility by Intertek, a Nationally Recognized Testing Laboratory.
We are the only spin processor manufacturer authorized to use the ETL mark.
All Laurell products that now carry the ETL mark meet, or exceed, specific US and Canadian product safety standards. These standards conform to those required for CE marking.
View Laurell’s ETL safety certifications here
Laurell spin processors are RoHS compliant, in an effort to reduce the use of hazardous substances.
The spin housing is made from 100% solid natural polypropylene or PTFE (electrically non-conductive). The internal electrical chassis and motor are connected to earth ground by way of the 3-pronged input power plug. No exposed conductive metal passes through the housing, therefore double insulating the operator against a possible electrical hazard. A local circuit breaker will interrupt the power if a current overload is detected and can be reset but not over-ridden by the operator.
The membrane switch panel is 5-VDC logic level isolated below a grounded static drain grid. The housing and panel material is completely resistant to nearly all solvents including, but not limited to, Acetone, Toluene, TCE, MEK, Methanol, IPA as well as KOH, H2SO4, HF, and HCl. Note: Bromine and Fluorine can only be run in the PTFE model.
A door interlock ensures that rotation and automatic chemical dispensing cannot take place with the door open. A wide lip on the inside bottom of the door routes fluids spun off the wafer to the rear (directly into the drain), while an overlapping shield stops leaking across the door opening.
A vacuum wafer hold-down interlock prevents process initiation. The chuck must remain at 0 RPM for one second before vacuum can be discontinued. This prevents the accidental release of a wafer while spinning as well as chemicals being dispensed into the vacuum system. Note: Some systems do not have vacuum hold-down using various mechanical retention techniques instead.
We only supply ASME-rated or other third-party tested (at least 160 PSIG - 11 bar) pressure vessels for chemical dispensing. See manufacturers information plate on each vessel for more details. The intended maximum dispense pressure is < 40 PSIG - (2.7 bar)
We use only the best dispense valves, flare or compression-type (gripper-ferrule) fittings and supply tubing supplied are all rated to at least 145 PSIG - (10 bar). All tubing required is supplied
and is properly labeled so that nothing can be compromised during installation of the equipment.
Some of our customers are using highly flammable chemistry with very low flashpoints.
Laurell equipment is designed to isolate any possible sources of ignition from the process chamber with an explosion-proof design with no open switches, relay contacts, motor brushes or other sources of combustion.
Laurell systems employ physical safety measures intended to protect operators from potential harm:
We would appreciate any constructive comment both having to do with operation and safety of our equipment. If you find anything inconsistent or unsafe, now or in the future, please bring it to our attention immediately.
We now have close to 20,000 systems installed worldwide and have yet to encounter one safety issue in 38 years of operation. We remain eternally vigilant to this very important issue!