POWX155 EN
Copyright © 2020 VARO P a g e | 11 www.varo.com
▪ Slacken the belt tension locking knob. This will allow the tension on the drive belt to be
released.
▪ The motor assembly is hinged to allow tensioning of the drive belt. To move the drive belt
to the desired pulley arrangement push the belt on the largest drive spindle pulley towards
the next smallest pulley and at the same time rotate the drive spindle, by hand until the
drive belt locates onto the next smallest pulley.
▪ Repeat this procedure on the motor pulley until the desired pulley arrangement has been
achieved (Fig. 16).
▪ NOTE: do not cross the belt to give intermediate speeds, this will cause damage to the
machine.
Duty cycle (S2): this product has a rated duty cycle of S2. This product must only be
run continuously for a maximum of 15 minutes. It must be then switched off and
allowed to cool down to room temperature before being run again for 15 minutes.
Small diameter drills require a higher speed and as the drill diameter increases the slower the
speed required. The following drilling speed chart is a guide only and only covers the more
common materials, drill diameters and speeds.
9.8 Belt tension (Fig. 17)
▪ When the desired pulley arrangement has been achieved tension the drive belt.
▪ To check that the correct tension has been achieved, press your finger onto the centre of
the drive belt. The drive belt should move approximately 13 mm.
▪ Retighten the belt tension locking knob (Fig. 17).
9.9 General guidelines for drilling
▪ Always centre punch the position for drilling. A centre punch is a pointed tool that marks
the material to be drilled with a small indent. It stops the drill bit moving from the desired
position.
▪ Always start by drilling a small pilot hole and gradually progress in drill diameter.
▪ When drilling metal, lubricate the drill tip with oil.
▪ Warning: Never cool with water or water based lubricant otherwise an electric
shock could occur. DO NOT use oil when drilling copper or brass. Care should be
taken when drilling copper and brass as the drill bit will be prone to jamming.
