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NORTHEAST CONTROLS INCORPORATED
6.1 Preventative Maintenance
The following items should be regularly monitored for purposes of maintenance:
The user must determine upon evaluation of his or her own application and the factors stated
above an appropriate maintenance schedule most suitable for his or her specific application.
6.2 Troubleshooting
The suction flow is
less than expected
7.0 Disassembly-Reassembly
m
Do not proceed with removal of jet pump from connecting piping unless the jet pump has been
relieved of all pressure or vacuum, has been allowed to reach ambient temperature and has
been drained or purged of all fluids. Failure to follow these instructions may cause personal
injury or property damage.
The jet pump Models GL and GH are made up of two parts (see Figure 3), a nozzle (61) and a body
(11) which are held together by a straight right hand mechanical thread, closing the face seal between
these parts.
To disassemble the unit, first attach a short piece of pipe to the suction connection as a handle, then
grip the nozzle flats and rotate in a counterclockwise direction.
When ready to reassemble unit, be sure the seal face of the nozzle and body are free of foreign
material and raised metal due to nicks. A non-hardening pipe seal compound may be applied to the
threads to further promote sealing. Thread the body back on to the nozzle turning in a clockwise
direction.
8.0 Disposal at End of Useful Life
Penberthy Jet Pumps are used in a variety of fluid applications. By following the appropriate federal
and industry regulations, the user must determine the extent of preparation and treatment the Jet
Pump must incur before its disposal. A Material Safety Data Sheet (MSDS) may be required before
disposal services accept certain components.
Metal, glass and polymers should be recycled whenever possible. Refer to order and PV&C - Black
Mountain Material Specification sheets for materials of construction.
NORTHEAST CONTROLS INCORPORATED
TEL: 201-419-6111 ext. 23 for Venturi Group
1. Jet pump units for corrosion or debris build up
2. Piping and fittings for corrosion or debris build up
3. All connections for tightness
4. Strainers for debris build up
Problem
Suction piping is too restrictive
Discharge pressure is too high
Motive fluid pressure is lower than required
Suction liquid is much higher than ambient temperature
Suction piping leaks
CAUTION
TEL: 201-419-6111 ext. 23 for Venturi Group
Cause
Table 2
Cure
Remove restriction
Remove restriction
Increase pressure
Lower temperature or size
larger jet pump
Tighten fittings
www.jrgjt.com
sales@jrgjt.com
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