ITT Goulds Pumps Trash Hog II, Инструкция по установке, эксплуатации и обслуживанию

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Too Tight
Slight Bow
Too Loose
Figure 14: V-belt tensioning
The drive is now properly tensioned and should operate satisfactorily with only an occasional readjust-
ment to compensate for belt and groove wear.
4.1.4 Grout the baseplate
Required equipment:
• Cleaners: Do not use an oil-based cleaner because the grout will not bond to it. See the instructions
provided by the grout manufacturer.
1. Clean all the areas of the baseplate that will come into contact with the grout.
2. Build a dam around the foundation.
3. Thoroughly wet the foundation that will come into contact with the grout.
4. Allow the grout to set.
4.1.5 Bypass-piping considerations
When to use a bypass line
Provide a bypass line for systems that require operation at reduced flows for prolonged periods. Connect
a bypass line from the discharge side (before any valves) to the source of suction.
When to install a minimum-flow orifice
You can size and install a minimum-flow orifice in a bypass line in order to prevent bypassing excessive
flows. Consult your ITT representative for assistance in sizing a minimum-flow orifice.
When a minimum-flow orifice is unavailable
Consider an automatic recirculation control valve or solenoid-operated valve if a constant bypass (mini-
mum-flow orifice) is not possible.
4.1.6 Suction Piping
1. Suction piping should be as short as possible using the fewest number of elbows and fittings pos-
sible to reduce friction loss and avoid priming problems.
2. The designer of the piping system must be sure that the available NPSH of the system exceeds
the required NPSH of the pump.(Refer to pump performance curve for the value of the NPSH re-
quired by the pump at the operating point ) .
3. Suction piping should be the same size as the pump inlet.
4.1 Pre-installation
26 Model Trash Hog II Installation, Operation, and Maintenance Manual