Operating Instruction Manual:
OM-HTWP-ELECTRIC-01
Serial Numbers:
From: BP5141
13
5.5 Electrical Connection
Before making an electrical connection, refer to the data plate located on the motor (2) for voltage and
current requirements. Once satisfied the supply is suitable, an electrical connection can be made.
NOTE:
Supply voltages vary from country to country. Hi-Force pumps will operate within the normal voltage
tolerance ranges, but in extreme cases where they are operated for long periods at high pressures
and in low voltage conditions, the motor may overheat and shut down.
NOTE:
A common cause of pump failure is the use of long extension cables to connect the pump to the
mains supply. The pump should be situated as close as possible to the power source.
5.6 Priming the Pump
The pump is self-priming and will not need to be primed before use.
5.7 Bleeding Trapped Air from the System
Torque wrenches and hoses are not always completely filled with oil when new. Hi-Force HTWH hoses are
supplied pre-filled with oil, but NEVER assume that there are no air pockets in a hose. Air trapped in the
system will lead to erratic operation of the torque tool. For safe and efficient operation, trapped air must be
removed from the system. The following procedure must be carried out with a torque wrench connected to
the pump, but
NOT
fitted on a bolt.
Hi-Force uses superior quick-connect couplers on its torque tools and hoses, which admit very little air into
the system when connections and disconnections are made. However, for best performance, carry out the
below process each time hoses or tools are exchanged.
To remove air from the system, proceed as detailed below:
Connect the pump to a Torque wrench and hoses. (See section 5.3)
Ensure the pressure relief valve (3) is fully open (wound anti-clockwise).
Switch on the pump using the green start switch (1)
NOTE:
The tool may slowly perform a retracting motion. This is normal but does not always occur, it will
depend on a number of factors.
Press and
hold the ‘Advance’ button (12) on the control pendant (11). The tool may stay stationary
or advance slowly depending on the relief valve setting.
Set the adjustable relief valve (3) to approx. 100 bar. The tool will advance to its full stroke. If the
tool retracts, then the hoses are connected incorrectly and need to be swapped over at the tool
couplers.
(Function test)
Release the
‘Advance’ button on the control pendant. The tool will automatically retract.
Repeat the advance and retract cycle at least 10 times to fully purge the air from the system.
Visually inspect the system for leaks.
(Low-Pressure leak test)
