SECTION 6
LOW PRESSURE WATER
Page 6-5
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6.2.2 Operation (See Figure 6.4)
The cutting water enters the pump through port “B”. When the CONTROL
POWER ON button on the operator control panel is activated, solenoid valve (3)
opens allowing water to flow through the filter (2) to the inlet of the booster
pump (1). The booster pump increases the inlet pressure to 8 bar (120 psi) to
assure proper supply to both intensifier assemblies. If the motor does not run
for 2 minutes, the solenoid valve (3) will shut off. To re-open the valve, press
F6.
NOTE
The booster pump (1) is factory set to deliver 8 bar (120 psi) with an inlet
pressure at port “B” of 4 bar (58 psi). The pump may require adjustment if
local inlet pressure is different, because discharge pressure depends on inlet
pressure. Inlet pressure is affected by filter condition, as well as local water
supply conditions.
The water flows through the low pressure water supply filter (2) and then enters
the booster pump.
Booster pump (1) inlet water is monitored by pressure switch (6). Water
pressure less than 30 psig (2 bar) will signal either low supply pressure at port
“B” or a clogged filter element (2). The booster pump is connected with hoses to
the inlet of both hydraulic intensifiers. Water pressure at intensifier sealing
heads (13) is monitored automatically by pressure switch (7) and manually by
gage (9). If sealing head pressure drops below 60psi (4 bar) then the intensifier
will automatically shut down.
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