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GRUNDFOS INSTRUCTIONS PM Rain Installation and operating instructions...
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Declaration of conformity EC declaration of conformity We, Grundfos, declare under our sole responsibility that the products PM Rain, to which this declaration relates, are in conformity with these Council directives on the approximation of the laws of the EC member states: –...
2. Scope of supply 8.1 Anti-cycling • Grundfos PM Rain unit. 8.2 Dry-running protection • Grundfos PM Rain unit and SB pump. Frost protection • Grundfos PM Rain unit and JP pump. 10. List of warnings Supplied with an automatic air release valve fitted in the priming hole and unions.
When the rainwater tank is filled with rainwater again, the PM Rain will automatically switch back so that it supplies rainwater instead of mains water. The PM Rain automatically starts and stops the pump according to the water demand.
Maximum height [bar] [kPa] 2.5* Mains water Fig. 2 PM Rain and JP pump We recommend PM Rain and JP pump for positively fed systems only, for Note example above-ground collecting tanks. * Default setting. See section 5.1 DIP switches.
10. Refit the PM Rain cover. Pos. C in fig. 4: 11. Insert the pump cable plug into the PM Rain unit. The unit should be installed so that the control panel 4.4.2 Aligning pressure settings is visible and easily accessible. Ensure that the inlets and outlets are connected correctly.
The red indicator light is tripping current < 30 mA. permanently on or flashes The PM Rain unit has a male plug for power supply in case of a fault. and a female socket for pump supply. See section 12. Fault "Warning"...
5.1 DIP switches 5.2 Enabling the DIP switch settings The PM Rain has a number of settings which can be When the desired DIP switch settings have been made with the DIP switches behind the control panel. made, they must be enabled, otherwise the PM Rain See fig.
See fig. 7. – The pump is running. If rainwater is no longer available, the PM Rain will 4. Close the tap. stop the pump when dry running occurs. When the system pressure drops below 2.5 bar (250 kPa), the –...
When the auto-reset function is enabled, cycling and dry-running warnings will be automatically reset. As default, the PM Rain is set to this operating mode, i.e. DIP switch 5 set to "OFF". To enable the function, set DIP switch 6 to "ON".
8.2.3 Resetting of dry-running warning Manual resetting If a dry-running warning has been activated, the pump can be restarted manually by pressing [Reset]. If the unit detects no pressure and no flow within 40 seconds after restarting, the dry-running warning is re-activated.
Protection mode. Note: The protection mode will protect the times per period. installation when the PM Rain is set to start/stop with 1 bar (100 kPa) differential pressure, i.e. when DIP switch 5 is set to "ON". The protection mode functions independently of the anti-cycling function.
12. Fault finding Warning Before starting work on the pump/PM Rain, make sure that the power supply has been switched off and that it cannot be accidentally switched on. Fault Cause Remedy The pump runs Air lock in the system.
Set DIP switch 5 to "OFF". seconds. a short period. The PM Rain is set to start/stop with 1 bar (100 kPa) differential pressure, i.e. DIP switch 5 is set to "ON", but no pressure tank has been installed in the system.
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Appendix 1x230 V 50/60 Hz, PE 1x230 V 50/60 Hz, PE Fig. 8 Wiring diagrams Fig. 9 Dimensions...
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Australia Malaysia Taiwan GRUNDFOS Pumps Pty. Ltd. GRUNDFOS Pumps Sdn. Bhd. GRUNDFOS Pumps (Taiwan) Ltd. P.O. Box 2040 7 Jalan Peguam U1/25 7 Floor, 219 Min-Chuan Road Regency Park Glenmarie Industrial Park Taichung, Taiwan, R.O.C. South Australia 5942 40150 Shah Alam...
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Thinking ahead makes it possible Innovation is the essence 98097101 1211 ECM: 1082500 The name Grundfos, the Grundfos logo, and the payoff Be–Think–Innovate are registrated trademarks owned by Grundfos Management A/S or Grundfos A/S, Denmark. All rights reserved worldwide. www.grundfos.com...
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