Like any other operational equipment, the Watermax solar submersible pump requires minimum servicing. Although the pumps are manufactured to the highest quality, any manufactured product need periodic maintenance for long term, reliable use.

The following is required:

1)    During the warranty period of 24 months it is imperative to replace the diaphragms once after 12 months. A free set of diaphragms is supplied with the pump. The purpose of this replacement is to determine the wear and tear on the diaphragms. These are actually manufactured to last at least 5 years, and in some cases we have received pumps for a service after eight years without any diaphragm replacement. On the other hand it is important we realize that special circumstances (like sand or gravel in the water) may dictate more regular diaphragm replacement.   Once the diaphragms have been replaced, one can inspect the replaced ones to determine whether more regular replacement is required. Replacement of diaphragms is a very easy task (takes approximately 10 minutes) and can easily be done by the customer. However, during the warranty period, the pump can be sent back to SWPV, with the free diaphragm set, for free replacement of the diaphragms.

2)    After the warranty period diaphragms should be replaced as follows (please note these are suggested replacement cycles - also read paragraph 1 above):

Pumps with total heads 0 - 165ft (0 - 50m) and one or two solar modules in series: Every 24 months

Pumps with total heads of 166ft - 330ft (51 - 100m) (all recommended solar module configurations): Every 18 months

Pumps with total heads exceeding 330ft (100m) (all recommended solar module configurations): Every 12 months

3)    The Watermax pumps are manufactured of 316 stainless steel, high quality bronze, anodised aluminium and a high quality DC motor and other spares. It is expected that the pump can work for you for a lifetime. Over and above diaphragm replacement, the brushes and bearings will have to be replaced when the pump's performance decreases (usually between 4 and 6 years after initial installation). Once this was done the pump should be operative for a similar period. Our pumps can always be serviced and should never be made redundant. It also has value when reconditioned, should circumstances dictate that you sell the pump. 

4)    Watermax owners in the USA can phone SWPV for a service exchange unit when their pumps are due for a service. This will ensure that you are not without water when the pump is submitted for a service. Please contact SWPV for details.