Operators manual for the Pentruder 6-12HF and Pentpak HF-power pack – Original instructions
Page
26
Preparing the power pack
Positioning:
The power pack should be positioned away from where the sawing takes
place
and should be kept dry at all times
. It should preferably be
placed on a flat surface.
Do
NOT
leave the power pack outside in the rain. The unit is ventilated
but to prevent possible damage to electronic components we recommend
that it is kept dry to prevent excessive condensation forming.
Power connections:
Electric power to the blade motor is supplied by one 18 mm diameter
orange colour 9 m (30 ft) cord. The feed and travel motors are supplied
by one smaller diameter orange colour 9 m (30 ft) cord packaged
together with a 10 mm water hose. The water quick disconnect coupling
with a 90° elbow should be at the saw head end.
Warning! The power pack should not be connected to the electrical supply until all power
cords are first connected to the saw and power pack.
Connection to water
supply:
The power pack is water cooled and needs a minimum of 4 litres (1
gallon) of cool water per minute at full power output. The water pressure
should be at least 1 bar (15 PSI) and maximum 5 bar (72.5 PSI). The
water supply may only be connected to the short hose on the power pack
water valve.
Important! In sub zero temperatures the remaining water inside the power pack cooling
circuit must be blown out with compressed air. The power must be switched ON, the water
valve must be switched ON, the water couplings must be disconnected, and then the water
can be blown out using compressed air. Alternatively, if no electric power is available, blow
backwards with compressed air in the coupling going to the saw head. The check valve in
the water ON/OFF-valve will then open and the remaining water in the power pack can then
be blown out.
Leaving water in the power pack in sub zero temperatures will destroy components in
the power pack and potentially cause a complete failure of all electronic equipment
inside the box.
In sub zero tem-
peratures, and if
electrical power to
the unit is not
available, blow with
compressed air in
this coupling to
remove water from
the heat sink and
tubing inside the
power pack.
