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How to get started
When unpacking the tool, make sure it is intact, complete and has not been damaged in transport Never use a
damaged tool
Before use, check that the backing pad is correctly mounted and tightened Connect the power cord to the sander
Connect the power cord to an earthed outlet that corresponds with the nominal voltage of the tool
In order to get the maximum power from this tool it is recommended to use it with the Mirka dust extractor (or other
suitable dust extraction unit) and Mirka products designed for rounded surfaces The combination of Mirka sanders,
Mirka products for rounded surfaces and Mirka dust extractor are the basis of Mirka dust-free sanding solutions
The power cord from the sander is connected to the mains supply on the front of the dust extractor By connecting
the sander's power cord to the outlet on the dust extractor it is possible to use the dust extractor´s autostart function
Operating instructions
• The tool is intended to be operated as a hand held tool The tool can be used in any position Note! The sander can
develop a torque reaction when started
• Make sure the sander is switched off Select a suitable abrasive and secure it to the backing pad Make sure the
abrasive is centered on the backing pad For optimal performance we recommend a Mirka backing pad
(125 mm, 5", 124 g) in combination with Mirka products designed for rounded surfaces
• Switch on the sander by pressing the On/Off key, Figure 1 The sander LED is now green
• The sander can now be started by pressing the lever
• The speed can be adjusted between 4,000 and max rpm by adjusting the position of the lever
• The max rpm can be adjusted by pressing rpm+ or rpm–, Figure 1 The rpm can be adjusted in the range 4,000 to
7,500 rpm (see table 1 for step/rpm)
• The tool has two speed control modes In the default mode the speed can be adjusted linearly by changing the
position of the lever In the other mode the speed remains fixed at the set max rpm when the tool is running When
the rpm+ and rpm– buttons are pressed simultaneously the tool toggles between the two controlling modes
• When sanding, always place the tool on the work surface before starting the tool Always remove the tool from the
work surface before stopping it This will prevent gouging of the work surface due to excess speed of the abrasive
• When used with a polishing pad or other heavy set-up the max rpm shall be reduced to 6,000 rpm or less
• When sanding is finished, turn off the sander by pressing the On/Off key The sander LED is now turned off
Step
1
2
3
4
5
6
7
Table 1
Maintenance
Always disconnect the power before maintenance!
Only use original Mirka spare parts!
46
Mirka® DEROS SP 550CV (230 V) & 550X CV (110 V) • 125 mm (5")
RPM
4,000
5,000
5,500
6,000
6,500
7,000
7,500