Pentax HP Serie Instructions D'utilisation page 62

INSTRUCTIONS FOR INSTALLING THE COOLING KIT
Where necessary:
- PUMPED LIQUID Temperature > 100°C
- AMBIENT Temperature > 35°C (25°C with handling by diesel engine or turbine)
The pump will be supplied in configuration: OIL LUBRICATION + COUPLING OPPOSITE SIDE
SUPPORT BEARING COOLING KIT.
The kit mainly consists of 2 additional components:
- SELF-PRIMING VOLUMETRIC PUMP: circulator
- STAINLESS STEEL PLATE HEAT EXCHANGER
The pump is supplied with "circulator" already assembled to the support, opposite side to coupling,
and heat exchanger to be assembled. Unless otherwise specified, the following components are not
included in the supply:
• COCK
• CHECK VALVE
• PIPES
In the assembly to be carried out, the purchaser/installer is responsible for correctly following these
installation instructions.
The manufacturer will be pleased to provide any technical indication in case of doubts, as well as
provide additional detailed instructions and diagrams.
Firstly, please note the following:
• READ THE INSTRUCTIONS ATTACHED TO THIS MANUAL CONCERNING THE HEAT EXCHANGER
• The heat exchanger MUST STAY BELOW INTGRALLY UNDER THE OIL LEVEL IN THE BEARINGS.
• The supply water MUST have a minimum pressure of 2.5barG and a maximum pressure of 4barG.
It must be clean water without solids in suspension, with a salinity below 0.05%, a maximum
hardness of about 2.5mmol/l and a MAXIMUM TEMPERATURE of 20°C (if not, the cooling effect
will proportionally decrease). Should the water have a temperature below 0°C, it must be
suitably mixed with a percentage of Glycol to prevent it from freezing. However, the coolant
fluid must be classified as fluid belonging to group 2, according to Directive 97/23/EC
• The piping must comply with the maximum oil temperature (normally around 100°C).
• The piping, if flexible, must be reinforced with wire mesh, so as to avoid restrictions, especially in
the "curves".
• The piping, as far as admissible, must be as short as possible.
• The oil side circuit connects in the 10 bar part of the heat exchanger, the water side in the 5 bar
part.
• The connections must be made, respectively, in the long side of the heat exchanger and the oil
side and water side flux direction is identified by an arrow: the two circuits are "COUNTER-
CURRENT"
• Make sure that the heat exchanger is positioned in an accessible and clean place: it must be se-
cured to a frame that allows its connection and maintenance.
The connection diagram is set out in the figure "DIAGRAM 1".
The kit requires the following precautions when commissioned and at every restart in general:
• filling the oil support to which it is connected with oil up to the prescribed level [see chap 4.7]
• Filling of circulator body with the same type of oil
• Open the oil side circuit delivery cock before start-up.
• Upon start-up, top-up with oil through the constant level oiler or breather cap, until it remains
constant. (The entire system requires a few minutes to get fully operational; until it is all
"filled" with lubricant, it is possible that the level in the support drops).
• The bearings will quickly heat-up and then stabilise at a temperature level to then decrease to a
lower temperature after a few hours of operation. The temperature MUST be kept below the
maximum permissible temperature by adjusting the water flow in the heat exchanger [see
CHAP. 5.1]. Regularly monitor the temperature until it is stable. The cooling system was gen-
erously dimensioned to allow full control of the temperature by adjusting the cooling water in-
flow. Please note that an excessively low temperature is not recommended. Therefore, stay at
a temperature that varies from a minimum of 50°C to the maximum indicated in CHAP 5.1.
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