Cutters

Question 1

Use

Answer 1

In conjunction with pump used to cut metal, various RVR situations. Can also be used for other rescues.

Question 2

C: blades

Answer 2

The blades are forged tool steel.

They are centrally pivoted within the tool body.

There’s a recess at the bottom of the blade which allows Max cutting power.

The maximum opening is 20 cm and the maximum cut force is 1018 kN.

Question 3

C: tool body, fluid / ram / plunger

Answer 3

The body is made of structural aluminium.

It consists of a hydraulic cylinder fitted with double acting hydraulic ram and plunger

Double acting ram is pressurised and activates the hydraulic fluid which moves the plunger and is controlled by a 3 way valve and is protected by a safety valve

Question 4

C: tool body, rotating handles

Answer 4

The rotating handle controls operation of arms through a 3 way valve

in neutral the valve directs fluid back to the return hose without creating pressure

Left / right one plunger side is pressurised and at the same time connects with the return hose to create a hydraulic circuit

Question 5

C: tool body, valves

Answer 5

Double check valve ensures when in neutral / disconnected hoses, the tool remains in place and doesn’t creep or fade.

Safety valve is to prevent the tool exceeding 360b of pressure.

Question 6

What else is on tool body?

Answer 6

Hydraulic hose connectors and carry handle

Question 7

Safety

Answer 7

PPE
Body position/ crushing
Comms
Handling techniques

Question 8

Testing

Answer 8

Visual , daily , after use
(Damage, leaks, dust caps)

Operational, into service, weekly, after repair
(No leaks, moving parts)

Annual workshop