Operator’s manual Pentruder
®
3P8 HF-wire saw and Pentpak - Original instructions
27
4.9.3
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.
In sub-zero temperatures the remaining water inside the power pack cooling circuit must be blown out with compressed
air.
1.
Disconnect the water couplings.
2.
Switch the Blade motor ON.
3.
Switch the water valve ON.
4.
Blow out the using compressed air or an air pump.
5.
Alternatively, if no electric power is available
6.
Disconnect the water couplings.
7.
Blow backwards with compressed air or an air pump in the
coupling going to the saw head. The check valve in the
water ON/OFF-valve will then open.
8.
The remaining water in the power pack can then be blown
out. See picture below.
!
Important!
•
Leaving water in the Pentpak in sub-zero temperatures will destroy components
in the power pack and potentially cause a complete failure of all electronic
equipment inside the box.
•
Check at regular intervals if the water filter needs to be cleaned.
In sub zero temperatures, and
if electrical power to the unit
is not available, blow with
compressed air or an air pump
in this coupling to remove
water from the heat sink and
tubing inside the power pack.
Connector for
remote control
Lifting handles (3)
Blade motor
Water valve
