ThermoWorks 9135-156 HART SCIENTIFIC 3-POINT IR CALIBRATOR - Manual (Page 24)

WARNING: Never introduce any fluids or other foreign material onto the
IR target or into the well block. This will damage the calibrator, cause loss
of accuracy, and may cause sticking and damage to your probes. In the
event that the calibrator should require service or repair, please contact a
Hart Scientific Authorized Service Center for assistance. The user should
not attempt to make any repairs or adjustments.
9135 Infrared Thermometer Calibrator
User’s Guide
26