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Commissioning
5.1 Start up
Before the HD pump is put into service, the following must be checked. If all these points are found to
be OK, the HD set can be started. Check:
The oil level in the pump. The oil level must be at least as high as the middle of the sight
glass. If necessary, add oil of the prescribed type;
The water tank (if applicable) and any suction filters for internal contamination. If necessary,
these must be cleaned;
If the water inlet is open, and/or there is sufficient inlet pressure;
If any water reservoir present is in accordance with regulations;
If the valve or valves to the suction filter or filters are open;
If the inlet/suction pipe and connections have no leaks;
If the connecting hoses from the discharge port are attached;
The minimum and maximum permitted drive speed. This must not be exceeded;
If the overflow valve is adjusted to the lowest or low pressure.
Never let the pump run dry of either water or oil. Air in the pump or pipelines can result in irreparable
damage to the pump.
After the above points have been checked, the HD pump can be put into operation. The following
steps should be followed in this respect.
Check the rotation of the drive;
Depending on use, it is recommended that the pump is allowed to run for a few minutes after
starting before being put under pressure, so the oil can heat up;
Vent the pipeline system;
Pressurise the system by adjusting the overflow valve (A). Never set the pressure to more
than the maximum value. This is specified on the pump sticker on the lantern piece;
Check if the pressure is correct;
Check all the connections, hoses and other fittings for any leaks;
If the high-pressure pump is being used for the first time, it is recommended that pressure is
limited to 30 to 50% of the maximum working pressure for the first few hours. After several
hours, the pressure can be gradually increased to the maximum pump pressure. In the first
few hours, the oil temperature will rise sharply, after which normal operating temperature will
be reached. During this period, regularly monitor the temperature and the level of oil in the
crankcase;
If no problems arise during this period, the pump can be used for its intended purpose.
Important:
Accident prevention
The installation must be carried out in such a way to reduce the risk of accidents to a
minimum under normal operation. It should be stressed that the "razor-sharp" water jet
from the spray gun is dangerous, especially at close range. Never spray in the direction of
people, animals or electrical components such as switches, motors, switch cabinets, etc.
5.2 Taking out of service
If the pump is taken out of service for an extended period of time, it is recommended that water is
kept in the pump to prevent rust forming on the inside of the pump and the valves sticking. However,
if there is a risk of frost, the pump must be drained or it could be broken by ice formation.
Alternatively, anti-freeze can be used in the pump.
IBAN NL71 RABO 0340341610 · KvK Den Haag 27230471 · Btw-nummer NL8000.78.378.B01 · info@vanderendegroep.nl · www.vanderendegroep.nl
Pagina 14 van 21
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