Bell and Gossett ecocirc 19-16, Инструкция по эксплуатации

Страница: 20 / 32

5 Operation
5.1 Preparation for startup
Follow these precautions before startup:
• The system must be thoroughly rinsed to prevent the presence of unwanted
objects and impurities which could block the pump.
• Fill completely with pumped media (water or water/glycol mixture).
• Purge the entrained air.
– See Activate the air purge function on page 19.
– The air purge function can be activated at any time during operation,
when presence of air is suspected in the system.
– The air purge function can be repeated several times in a sequence if
necessary.
– Audible flow noise indicates presence of air that is entrained in the pump.
5.2 Modes of operation
The product has three standard and two auxiliary modes of operation.
Proportional
pressure (PP) Turn the knob to any position between 1 and 7, with 7 being
the highest, to set the speed of the pump. The pump
automatically decreases its speed at low flow, thus providing
energy savings. This mode is the default setting.
Constant
pressure (CP) Turn the knob to any position between 1 and 7, with 7 being
the highest, to set the speed of the pump. The preset
pressure remains constant, independent of the flow.
Constant speed
(CS) Turn the knob to any position between 1 and 7, with 7 being
the fastest, to set the speed of the pump. The preset speed
remains constant, independent of the flow rate.
Automatic air
purge This mode is used to purge air that is trapped in the pump
housing. See
Activate the air purge function on page 19 for
instruction.
Standby This mode is used to keep power consumption low (<1 W),
when pump operation is not required.
5.3 Switch between standard operating modes
1. Turn the knob to the lowest setting.
2. Turn the know back to the desired setting within 5 seconds.
Pump indicates mode change by color of the knob LED:
Mode LED color
Proportional pressure (PP) Blue
Constant pressure (CP) Green
Constant speed (CS) White
5 Operation
18 ecocirc ® 19-16 INSTRUCTION MANUAL