Hi-Force ALUMINIUM HP252 Operating Instructions Manual - Page 12
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Double acting pumps:
Note: Both the advance and return ports on the pump are marked with an "A" and an "R" to identify the
ports.
Push the Directional control valve (7) forwards to the Advance "A" position
Pressurise the system by operating the pump handle (2). Note: Some pumps emit a high pitched
noise during the delivery operation. This is purely the low pressure relief valve venting the unused
low pressure oil.
Ensure that both the advance and retract ports are connected from the pump to
the cylinder. Failure to comply with this can result in tool failure and/or severe
personnel injury.
Only use the pump handle supplied. DO NOT use handle extensions.
Operating Instruction Manual:
OM-HP-ALUMINIUM-01
12
Serial Numbers:
From: DF2001
"A"
Advance
port
"R"
Retract
port
Advance