HAMMELMANN HDP 502 / S 1100-50, Operating Instructions Manual, Page: 46 / 311

Operating instructions
Operation
No.: HDP 502 / S 1100-50
Page 40, Issue: 03.2017

Copyright Hammelmann GmbH
Germany

D-59302 Oelde

Carl-Zeiss-Straße 6 - 8
 You may now connect the accessory: To do so:
 Remove protective cap from accessory high pressure connector. Ensure that it is clean and then smear
threads with Molykote.
 Check high pressure hose connector once again and make connection (ref. to the table: torque for high
pressure hoses).
 If fitting further accessory, i.e.: Rotorjet to pistol repeat inspection, Molykote and connection check
procedure).
9.2 To start the high pressure pump unit
The jetting operator should have a good foothold and firm control of the jetting tool but
with the trigger(s) in the “OFF” position.
High Pressure water is a highly effective cutting tool and therefore dangerous!
Never point a pistol, lance etc. at other personnel under any circumstances even if
unpressurised!
Under no circumstances even if unpressurised!
 Panel operator should turn on water supply and wait of a sign from the jetting operator, which indicates that the
water comes free of blow holes out of the jetting tool.

Pre-heat press keypad (activates softkey ).
 To start the engine press keypad .
 Jetting operator can now engage trigger(s) and commence blasting. The operator in the control panel should
observe the values of engine speed or pressure. Pressure must climb gradually up to the selected level.
 During operating a second operator should control the manometers of the pump, i.e. if the pressure always
increases continuously, and he should also oversee the jetting operator.
In the event of accident, machine problem, signs of leakage the pump operator must imme-
diately press the emergency stop button. For reasons of safety pull off the ignition key and
protect it in a safe place.
9.3 Operating the system
 Monitoring during operation
 The panel operator should remain in position and observe both the panel and jetting operator.
In the case of accident, equipment failure or leakage operate the emergency stop button
immediately. Remove the ignition key for safety reasons.

Monitor the pressure at display.
Pressure is also a function of accessory nozzle diameter. If 1400 bar max. is reached at idle
or low r.p.m. the nozzle is too small. If 1400 bar cannot be achieved at max. engine r.p.m.
the nozzle is too large. (Refer to nozzle selection tables)
 Monitor engine r.p.m. at the display. Every time the jetting operator releases the accessory trigger(s) the
engine speed should decrease to idle speed.