Maintenance on the units has been improved with a screw adjustment for impellor realignment to take account of wear. "Before it might have taken an engineer 30 minutes to an hour to adjust the impellor but the revised design allows it to be done in five minutes," explained Grindex general manager Dan Schaffer. "The oil inspection has also been eased with access on the outside of the casing where as previously the casing would have to be removed to carry out checks."
The modular design of the base of the pump allows all the units to be converted on site from dewatering configurations to slurry pumping.
Like previous Grindex models the pumps have an air valve that prevents pump damage from running dry. "Normally the pump running dry would result in the motor over heating," said Schaffer. "The air valve allows the air to operate the impellor and cool the motor and then be pushed out of the pump and not enter the pump line."
The pumps also feature the SMART electronic motor guard to prevent damage from phase drop out when operating with three-phase power. Additionally, the pumps are fitted with rubber shock absorbers, which help to protect vulnerable parts of the pump from impact damage.
Models: Drainage pump range - Micro to Magnum
Maximum head: 10.4 to 102m Maximum flow: 4.2 to 345 litres/s Weight: 10 to 540kg Discharge: 50 to 254mm
Special features: Close impellor design for reduced wear; Air valve to between dry running damage; Easy maintenance