STI-2807 | STI-2818LP
Operating Manual
14
3.8
Variable Speed Drive (VSD)
The variable speed drive is responsible for monitoring incoming power as well as changing the
electronic frequency to allow the motor to run at different speeds. This unit is a closed panel that is
intended to be operated only with the keypad.
3.9
Tool Change
In order to change the tools, the operator must first ensure that the grinder is switched off and
disconnected from the electrical source. The operator should then place all the pocket weights
provided in the weight holders on either side of the variable speed drive.
Then push machine down by the handle in a controlled manner until the grinder is resting on the
top casters. The operator then taps the tools from the outside edging to remove, and installs new
tools by sliding the tooling outward.
Machine must only be tilted back on firm, level surface. There is danger of machine
falling if all weights are not used and surface is not level.
3.10
Care & Maintenance
Special attendance and regular maintenance of the machine and its parts are imperative for
functioning and safety.
In order to prevent unnecessary downtimes it is recommended to keep original spare and wear
parts on stock.
The following maintenance should take place before and after every operation of
machine:
1. Clean all surfaces with a dry, lint free cloth
2. Inspect all electrical cables for cuts and replace damaged chords
3. Check all electrical connections are secure and snug
4. Inspect gear box for any signs of oil leakage and repair as required
5. Verify functionality of Dead Man Key.
All persons in the proximity of the machine in operation must wear safety glasses with
lateral protection and steel toed work boots. The machine operator must wear close-
fitting protective clothing.
