Operation And Use; Checks Before Starting Up - Pentax HPV Operating Instructions Manual

4. OPERATION AND USE

CHECKS BEFORE STARTING UP

ATTENTION!
Before proceeding with starting up operations, the following guidelines must be
adhered to:
Check connections of piping lips.
Check any flushing and cooling system connections (where applicable).
Check the direction of rotation by briefly starting the pump and stopping it
immediately, as it must not operate dry.
Ensure the lubricant oil is as required and in sufficient amount.
Ensure conformity of electrical connections and relevant protections.
Ensure all protections of rotating parts are correctly installed.
Ensure the system is ready for starting up.
4.1 STARTING UP/STOPPING
PUMP COMMISSIONING AND OPERATION
- When the motor has reached the rated speed adjust the delivery valve until
achieving the rated pump head.
ATTENTION!
Avoid operating the pump for a long time with the pressing gate valve closed.
Prolonged operation with delivery valve closed causes overheating which
may damage the pump.
Pump operation must be noiseless and vibration-less, the pump must not
run dry.
If the pump is fitted with gland packing, it should drip slightly during opera-
tion. (Fig. 10)
The gland must be tightened only lightly.
If the pump is equipped with mechanical seal, it does not require monitoring
as it has no leaks.
Also ensure maximum absorption of the assembly does not exceed the value set
out in the plate.
ATTENTION!
Backup pumps must be operated at least once a week in order to assure they
are always ready for use.
Braided gasket
9
Fig. 10
Gland packing seal