HAMMELMANN B7.02502.0210, Operating Instructions Manual

Page: 29 / 311

Construction & Description
Operating instructions
No.: HDP 502 / S 1100-50
Page 23, Issue: 03.2017

Copyright Hammelmann GmbH
Germany

D-59302 Oelde

Carl-Zeiss-Straße 6 - 8
7.2.7 Electronic safety cut out
To prevent over pressurisation the electronic system has a cut out circuit set at 10 % above the stated maximum
operating pressure. If activated the complete unit will shut down and the pressure optically displayed. This cannot
be adjusted by the operator.
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7.2.8 High pressure installation
The high pressure installation consists of:
 Pressure fittings,
 high pressure hose line,
 high pressure outlet and connection point for hose arrester.
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7.2.9 Suction side installation
The suction side installation consists of:
 Boost pump
 Raises the feed water pressure and prevents pressure loss in the filter
 Ensures that a minimum feed pressure of 3 bar is available preventing cavitation.
 Header tank
 The header tank ensures a constant air free supply for the boost pump. It also takes the oil cooler and
bypass water. A float switch ensures that the tank is not over filled when the unit is in bypass mode. A
drain cock is provided to empty the tank in freezing conditions.
 Filter
 Removes abrasive particles from the feed water to prevent wear.
 Is fitted with an air vent to prevent back pressure build up.
 Pressure differential sensor
 Linked to the filter protects the pump against filter blockage.
 A pressure gauge and low pressure safety cut-out installed at the suction chamber.
 An automatic air venting valve to prevent blockage by pressure build up.
 Suction line and connection.
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7.2.10 Container (if fitted)
The container with lockable maintenance doors has louvered to provide ventilation for the diesel.
When closed the system is completely protected from the elements and noise level is reduced to 80 db (A) at
1 metre distance.
The unit should only be operated with closed doors.
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7.2.11 Dieselengine Volvo TAD 1672 VE St. IV Tier 4 final
The Volvo TAD 1672 VE is a 6 cylinder, 4 stroke direct injection, water cooled diesel with a high power output from
a very comapct construction. Please refer to the engine manual supplied before using your high pressure pump
unit.
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