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Installation, Operation and Maintenance Manual Installation, Operation and Maintenance Manual
DANGER:
When hot liquid is to be pumped, it must be ensured that people cannot
accidentally touch the equipment hot surfaces.
4.8. Hot Surfaces
Figure 12 shows the parts in the pump that may get as hot as the hot liquid being pumped.
4. INSTALLATION
Follow these instructions for a correct pump start-up:
5.2.1. Close the valve on the discharge side of the pump, and remove the priming plug from the
pump head.
5.2.2. Slowly open the valve on the suction side until water flows steadily out of the priming hole.
5.2.3. Replace the priming plug and secure it firmly. Open completely the valve on the suction side.
5.2.4. Start the pump and check the direction of rotation.
5.2.5. Check if the pump rotates in the correct direction according to the arrow on the pump
head. The pump should rotate counterclockwise as seen from the motor.
5.2.6. Bleed the pump through the bleed valve (vent screw) at the pump head.
5.2.7. Keep on bleeding the pump. At the same time, open the discharge valve very slightly.
5.2.8. Tighten the vent screw when the flow rate is constant. Open the discharge valve completely.
5.2. Start-up Procedure
Before starting the pump, check the following points:
● The foundation bolts of the pump must be securely fastened.
● The pump must be completely filled with water.
● The voltage of the installation must match the pump’s specifications.
● All the piping must be properly fastened and allow the desired flow rates.
● Valves in the suction pipe must be fully opened and the pressure pipes must be slowly
opened after the pump start-up.
● Check the operation pressure if a pressure gauge has been installed.
● Check all controls for normal operation. If the pump is controlled by pressure, check the
starting and stopping pressure set values. Check current maximum value to avoid motor
current overload.
5.1. Preliminary Check
ATTENTION:
Do not start the pump until it has been filled with liquid and vented. If the
pump runs dry, the pump bearings and the shaft may be damaged.
DANGER:
● Pay attention to the direction of the vent hole and make sure that the
discharging water does not cause injury to persons or damage to the
motor or other components. In the case of hot-water installations, pay
special attention to the risk of injuries from scalding hot water.
● During operation, the outer surfaces of the pump and motor can exceed
104 ºF (40 ºC). Do not touch any part of the body without adequate protec-
tive gear. Do not place any flamable materials near the pump.
5. START - UP
Figure 12:
Pump hot surfaces
Pump head
Pump sleeve
Pump base
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