Grundfos CH, Installation And Operating Instructions Manual

Page: 8 / 17

8
Repeat the procedure until the right cut-in and cut-
out pressures have been obtained.
Note: The cover must be fitted to the pressure
switch every time the electricity supply is switched
on.
Pressure variations in the system can be reduced by
reducing the differential pressure to a minimum. Set
the differential pressure by means of the screw B,
see fig. 2.
5. Operation and maintenance
5.1 Checking the tank precharge pressure
To ensure reliable and correct operation, including
the frequency of stop/starts, the precharge pressure
of the diaphragm tank should be checked regularly
(at least once a year). The precharge pressure can
be measured with, e.g. a tyre gauge.
5.2 Frost protection
If there is any danger of frost, the tank and the pump
should be emptied.
6. Technical data and
operating conditions
Supply voltage:
See pages 92 and 93.
CH:
• 1 x 220-240 V –10%/+6%, 50 Hz, PE.
• 3 x 220-240 V –10%/+6%, 50 Hz, PE.
• 3 x 380-415 V –10%/+6%, 50 Hz, PE.
• 1 x 110 V –10%/+10%, 60 Hz, PE.
• 1 x 220 V –10%/+10%, 60 Hz, PE.
JP 5:
• 1 x 220-230 V –10%/+6%, 50 Hz, PE.
• 1 x 230-240 V –10%/+6%, 50 Hz, PE.
• 3 x 220-240 V –10%/+6%, 50 Hz, PE.
• 3 x 380-415 V –10%/+6%, 50 Hz, PE.
JP 6:
• 1 x 220-240 V –10%/+6%, 50 Hz, PE.
• 3 x 380-415 V –10%/+6%, 50 Hz, PE.
• 3 x 220-240 V –10%/+6%, 50 Hz, PE.
Enclosure class:
CH: IP 54.
JP: IP 44.
Sound pressure level:
The sound pressure level of the pumps is lower than
the limiting values stated in the EC Council Directive
2006/42/EC relating to machinery.
Maximum operating pressure:
Diaphragm tank: See nameplate.
JP pumps: 6 bar.
CH pumps: 10 bar.
Maximum liquid temperature:
Diaphragm tank: See nameplate.
JP pumps: +40°C.
CH pumps: +90°C.
Ambient temperature:
M55°C.
7. Disposal
Disposal of this product or parts of it must be carried
out according to the following guidelines:
1. Use the local public or private waste collection
service.
2. In case such waste collection service does not
exist or cannot handle the materials used in the
product, please deliver the product or any haz-
ardous materials from it to your nearest Grundfos
company or service workshop.
Before start-up, the system must be
flushed through with clean water and
drained to remove possible impurities in
the system.
If the liquid temperature e68°C,
the booster set must cool before any main-
tenance work is carried out.
Care should be taken to ensure that per-
sons cannot come into contact with the
booster set during operation, e.g. by
installing a guard.
Subject to alterations.