INSPECTION AND SERVICE PLAN
DESMI Pumping Technology A/S
Tagholm 1
9400 Nørresundby
– Denmark
Tlf. nr.: +45 96 32 81 11
Fax +45 98 17 54 99
E-mail: [email protected]m
68
To make sure that the stand-by pumps are ready for operation, start them up once a week.
• Monitor the bearing temperature.
The bearing temperature must not exceed 85 °C (measured at the motor housing).
Inspect the shaft seal for leaks at regular intervals.
- Before inspection of a pump without guard, check that the pump cannot be started
unintentionally.
- The system is to be without pressure and drained of liquid.
- The repairman must be familiar with the type of liquid which has been pumped as well as the
safety measures is to be taken when handling the liquid.
CAUTION
RISK OF PROPERTY DAMAGE!
Operation of the pump at incorrect bearing temperature could damage the pump.
Make sure that the bearing temperature of the pump (set) is not more than 90
C
(measured on the outside of the motor housing).
NOTE: After commissioning, increased temperatures may occur at grease-lubricated rolling
element bearing due to the running-in process. The final bearing temperature is only reached
after a certain period of operation (up to 48 hours depending on the conditions).
On pumps with bearing (/-02 design or Spacer), the drain hole at the mechanical shaft seal must
be inspected regularly (see drawing example below). Clean the drain hole as needed. If the drain
hole clogs up, leaking liquid and/or vapor from the shaft seal can be forced up into the bearing
unit, which can result in a much shorter bearing life than normal.
Figure 8-1: Drain hole for shaft seal
Содержание NSL 100-215
Страница 2: ......
