Desmi VAC-2001, Руководство по эксплуатации и обслуживанию

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DESMI PUMPING TECHNOLOGY A/S
-9-
Tagholm 1
9400 Nørresundby - Denmark
Tel.: +45 96 32 81 11
Fax +45 98 17 54 99
E-mail:
desmi@desmi.com www.desmi.com
6.7
FITTING BEARING BRACKET WITH REAR PLATE FOR ROTOR HOUSING
Place the O-ring (3) that seals between pump casing and bearing bracket on the bearing bracket
where it can be held with a little silicone grease. Lead the bearing bracket into place and fasten with
screws (1). Mount filling and drain plug (31) and fill bearing bracket with oil (SAE 15W40) until half
the shaft is covered.
6.8
SHAFT
When the pump has been assembled, check that the shaft rotates freely.
7.
FROST PROTECTION
Pumps which are not in operation during frost periods are to be drained to avoid frost damage.
Remove the filling and drain plug (10) at the bottom to empty the pump. Alternatively, it is possible
to use anti-freeze liquids in normal constructions.
8. DISMANTLING
Before dismantling the pump make sure that it has stopped. Empty the pump of liquid
before it is dismantled from the piping system. If the pump has been pumping
dangerous liquids you are to be aware of this and take the necessary safety
measures. If the pump has been pumping hot liquids, take great care that it is drained
before it is removed from the piping system. If cold or very hot liquids have been
pumped, the operator must be aware that it is dangerous to touch the pump surface
and he must, consequently, take the necessary safety measures.
9. START-UP
A self-priming centrifugal pump will not function until the pump casing has been filled
with liquid.
The liquid also serves as coolant for the shaft seal. In order to protect the shaft seal
the pump must not run dry.
WARNING
For safety reasons the pump is only allowed to operate against closed discharge valve for a short
time (max. 5 minutes and at a max. temperature of 80°C for standard pumps). Otherwise there is a
risk of damage to the pump and, at worst, of a steam explosion. If the pump is not monitored, the
installation of a safety device is recommended.
9.1
STARTING
Before starting the pump check that
- the shaft rotates freely without noise
- the pump casing is filled with liquid.
Start the pump for a moment to check direction of rotation. If the direction is correct (i.e. in the
direction of the arrow), the pump may be started.