Sulzer SES - Running Checks and Stopping; Running Checks and Seal Inspection; Pump Stopping and Storage

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6.4 CHECKS WHILE RUNNING
After a su󰀩cient period of time to reach normal operating conditions, verify that:
• There are no liquid leaks (for soft packing seal, do reference to the specic section of this manual)
• There are no vibrations or anomalous noises.
• There are no oscillations of the ow rate.
• Ambient temperature does not exceed 40 °C
• The temperature of the pump body does not exceed 90 °C.
• The motor’s current absorption does not exceed that shown on the plate.
In the presence of even only one of these conditions, stop the pump and nd the cause.
WARNING!
In the event that the surface of the pump is hotter than 50 °C, we recommend protecting it against accidental contact, such as using
grates or shielding, in such a way that however does not a󰀨ect correct ventilation.
WARNING!
The pump maximum working pressure can’t be bigger than the PN pump nominal pressure.
6.5 CHECKING OF THE SEAL
MECHANICAL SEAL
The mechanical seal does not require regulations and/or maintenance. It’s possible a loss of liquid during the rst instants of operation due to the
arrangement of the seal. If the loss should not stop, stop the group and research the cause.
SOFT PACKING
i. Regulate the tightening of the soft packing after about 30 minutes of working.
ii. After the tightening of the soft packing, wait some minutes: the loss of liquid have to be equal to a light dripping (between the 20 and the
100 drops per minute).
iii. If necessary, modify the tightening of the soft packing.
iv. After some hours of operation, verify again the dripping.
WARNING!
The lack of dripping from the packing seal could result in heavy damage of the seal: don’t tight too much the soft packing.
Ensure the dripping also in minimum pressure condition.
6.6 STOP THE PUMP/ELECTROPUMP
i. If the non-return valve is not present, close the gate valve on the delivery pipe.
ii. If there is no foot valve present, close the gate valve on the suction pipe.
iii. Stop the electrical feeling
WARNING!
If the pump / electric pump remains inactive at low temperatures or, at any rate, for a period exceeding three months, it is a good idea
to empty the pump through the specic cap.
6.7 STORAGE
Pump installed, not in operation but ready to be started up: operate the pump for at least 10 minutes once a month.
Pump removed from the system and put into storage: clean the pump and protect its surfaces from corrosion by applying appropriate products.
7. MAINTENANCE
Before executing any operation, turn o󰀨 the power and prevent it from being reconnected.
Do not make changes to the product without authorization.
In the event it is necessary to perform any type of maintenance, the following precautions must be observed:
i. disconnect the pump motor from the electrical system;
ii. wait until the temperature of the liquid is such not to create a danger of burns;
iii. if the liquid handled by the pump is harmful for one’s health, it is indispensable to observe the following warnings:
a. the operator must wear suitable individual protection devices (mask, goggles, gloves, etc.);
b. the liquid must be carefully collected and disposed of with respect for current law;
iv. the pump must be washed inside and out, disposing of the residues as said above.
The surfaces of pump and motor can reach high temperatures. Wait to cool before handling and use appropriate personal
protection.
WARNING! Schedule a regular cycle of maintenance based on the type of employment and conditions of use.
7.1 OPERATIONS NEEDED EVERY 1500 WORKING HOURS AND NOT LESS THAN ONCE A YEAR
Check:
• the state and the temperature of the bearings;
• the level of vibrations at the bearing housings;
• the condition of the lubricant for bearings lubricated with oil or outside greaser;
• seals conditions:
o mechanical seals must not have any leaks;
o for soft packing seals, dripping must be on the initial values
• the gaskets conditions: there must be no leakages;
• alignment of the complete set;
• performances of the pump (ow / head);
• motor data (current consumption, value and imbalance of voltages, isolation, vibrations, etc. ...): refer to motor instruction;
• the condition of all electrical connections (terminal, grounding, control panel, etc. ...);
- Translation of the original instructions
EN