Manual

Maintenance Instructions
6.6 For maintenance intervalls see „General information for PMS-Generators“The raw water circuit
6.6.1 Clean raw water filter
The raw water filter should be released regularly from arrears. In each case
the water cock must be closed before. It is mostly sufficient to beat the filter
punnet.
If water should seep through the cover of the raw water filter, this may be
sealed in no case with adhesive or sealant. Rather must be searched for the
cause for the leakage. In the simplest case the sealing ring between caps
and filter holders must be exchanged.
6.7 Causes with frequent impeller waste
Fig. 6.6.1-1: Raw water filter
The impeller of the cooling water pump must be regarded as wearing part. The life span of the impeller can be
extremely different and exclusively depends on the operating conditions. The cooling water pumps of the PANDA
generators are laid out in such a way that the number of revolutions of the pump lies low compared with other gensets.
This is for the life span of the pump a positive effect. Unfavorably affects the life span of the impeller, if the cooling
water sucking in way is relatively long or the supply is handicapped, so that the cooling water sucking in range
develops a negative pressure. This can reduce first of all the power of the cooling water pump extremely that the
wings of the impeller are exposed to very strong loads. This can shorten the life span extremely. Further the operation
of the impeller pump loaded in waters with a high portion of suspended matters. The use of the impeller pump is
particularly critical in coral waterbodies. Cases are well-known, which a impeller pump had so strongly run after 100
hours already that the lip seal on the wave was ground in. In these cases sharp crystal parts of the coral sand
assess in the rubber seal and affect like an abrasive the high-grade steel shank of the impeller pump. If the generator
were mounted over the water level it is particularly unfavorable for the impeller pump. After the first start some
seconds will pass by, until the impeller can suck in cooling water. This short unlubricated operation time damages
the impeller. The increased wear can lead after short time to the loss. (see special notes: "Effects on the impeller
pump, if the generator is mounted over the waterline")
6.7.1 Replacement of the impeller
Seite/Page 98 Panda_4000s_PMS_SCB_FCB_eng.R04 - Kapitel/Chapter 6: Maintenance Instructions 7.5.12