Hydraulic Connections; Start Up - Comet MP Series Use And Maintenance Manual

5.2 HYDRAULIC CONNECTIONS

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CAUTION
• Do not connect up to the mains supply of drinking water.
• All pipes must be securely fixed to the relative coupling with grips.
Refer to fig. 3 for the hydraulic intake, delivery and bypass connections: this depicts the general
layout of a hypothetical machine incorporating the pump. Also refer to the following table:
a) For use with a sprinkler lance:
- Fully unroll the high-pressure pipe.
- Use the appropriate grip to connect the high-pressure pipe to a tap on the pump or on the control unit.
- Make sure the lever on the lance is closed and then connect the lance to the high-pressure pipe.
b) Connect the intake pipe to the relative coupling if the Manufacturer of the machine incorporating
the pump has not already done so. Check the filter is clean.
WARNING
• The intake of the pump must use a tank at atmospheric pressure and the level of the liquid must
be between 1m / 3.3ft above and 1 m /3.3 ft below the intake coupling (see fig. 8); never connect
the pipe to pressurized water pipes.
• For periods of 10÷15 min, the intake of the pump can operate at drops of up to 3m/ 9.8 ft: it must
not operate at drops in excess of this.
• The pump must be provided with an adequate intake filter. In case of doubt, contact a Skilled
Technician. Check that the filter is perfectly clean at all times.
• The internal diameter of the intake and bypass pipes must be equal to the external diameter of
the intake and bypass couplings respectively. They must have a nominal pressure of 10 bar /145
psi
• The internal diameter of the delivery pipes must be equal to the external diameter of the delivery
couplings. Their nominal pressure must not below the maximum pressure of the pump.
• Do not supply the pump with water at a temperature in excess of 40°C/104°F or below 5°C/
41°F.
• Do not operate the pump for a long time if it is not connected to a water supply.
• Do not supply the pump with salt water or water containing impurities. In this event, run the
pump for a few minutes with clean water.

5.3 START UP

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CAUTION
• Complete any operations required to start up the machine that incorporates the pump as
recommended by its manufacturer.
• Read the instructions and warnings on the label of chemicals to be distributed by the
1
T Tank Tank
2
Intake filter
3
Intake circuit
4
Pump
5
Delivery circuit
6
By pass circuit
7 Sprinkler lance (typical application)
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