Grundfos Horizontal Split Case Pumps HS 300-320/320

Warning: Impeller and wear rings may have sharp edges due to wear

Check whether the grease in the pump bearings has hardened

Check rotating assembly for wear

Between regular maintenance inspections, be aware of signs of motor or pump trouble

Sign off on the pump maintenance

Check alignment of pump and motor

Check fixing bolts and tighten, if necessary

Sign off on the pump maintenance

Warning: Pump bearings are lubricated prior to delivery

To refill the bearings with fresh grease, use a grease gun and press grease through the two lubricating nipples provided

Note: HS pump complete: We recommend to apply grease while pump is running

Warning: HS bare shaft pump combined with motor not supplied by Grundfos: Do not apply grease while pump is running, unless a CE-approved coupling guard is fitted

The relubricating intervals and information on quantity and type of grease are stated on the lubricating plate (if available) on the pump

Relubricate each bearing every 2000 operating hours with a quantity of 8-12 cm3 (8-12 ml)

Caution: Do not overgrease! Too much grease can cause over-heating and premature bearing failure

Lubricate the motor in accordance with the indications on the motor nameplate

Ball bearing grease manufacturer

Remove bearing housings from pump

Thoroughly clean bearing housings

Refill bearings with fresh grease

Refit bearing housings in accordance with assembly instructions

Warning: Before starting work on the pump, make sure that the electricity supply has been switched off and that it cannot be accidentally switched on

Routine maintenance is essential to maintain the pump in a good condition. A high degree of cleanliness should be maintained during all maintenance procedures

Inspections should be carried out in accordance with the routine maintenance chart below. Depending on operation and environmental conditions together with a comparison of previous inspections, the frequency of inspections may be altered to maintain satisfactory operation of the pump

Hand test bearing housing for any sign of temperature rise

Check correct leaking from stuffing box (approx. 40-60 drops per minute)

Check pump bearing temperature every month

Sign off on the weekly pump maintenance