Xylem Flojet G257 Serie Installation Und Betriebsanleitung Seite 3

Dimensional Drawing
Dessin dimensionnel pouces (mm) / Maßzeichnung Zoll (mm) / Disegno dimensionale pollici (mm) / Maattekening inch (mm) /
Måttritning tum (mm) / Dibujo dimensional pulgadas (mm)
4.7
[119]
7.0
[177]
1.8
[47]
MOUNTING & PLUMBING
Mount the unit in a dry and adequately ventilated area. To prevent
siphoning, locate the unit within several feet of the tank and above
the liquid level (no more than 4 ft). This is not a submersible pump.
Secure pump unit to desired fixture with screws through the base-
plate of the pump bracket.
FLEXIBLE HOSE
Use flexible hoses to avoid excess stress on the pump ports. Do
not crimp or kink hoses. All hoses should be the same size as the
pump port fittings. Fittings must be compatible with liquid being
pumped. Use plastic fittings. Avoid sharp bends that could restrict
flow or cause hose to collapse under vacuum. Use reinforced hoses.
Make sure air regulator is set at zero. Use reinforced 1/4" hose to
connect to air supply from regulator to the 'AIR In' port. The exhaust
could be vented to atmosphere or through a muffler.
Use a minimum 40 mesh strainer before the pump inlet.
CAUTION: The use of check valves in the
plumbing system could interfere with the priming
ability of the pump. If unavoidable, check valves
in the pumping system must have a cracking
pressure of 2 PSI or less.
inches (mm)
5.8
[148]
2.0
[51]
RIGID PIPE
10.1
[256]
4.0
[101]
2.0
[52]
2.7
[69]
OPERATION
At start-up, regulate air pressure to desired setting. For most instal-
lations 20 PSI (1.4 bar) inlet will be adequate, although DO NOT go
below 20 PSI. Pump will operate according to air supply. Flow and
pressure can be adjusted by increasing or decreasing air pressure
to accommodate varying product viscosities, length of lines or oth-
er installation conditions.
Review flow curves located on page 2 for further assistance. High
viscosity fluids and hose length will limit priming distance.
CAUTION: DO NOT EXCEED 100 PSI (6.9 Bar)
AIR INLET PRESSURE.
CAUTION: AIR MUST BE DRY AND OIL FREE.
CAUTION: IF PUMP IS T0 BE USED IN HIGH
FLOW, LOW PRESSURE APPLICATIONS, ADJUST
COMPRESSED AIR PRESSURE TO 20 PSI (1.38 Bar)
ABOVE DISCHARGE PRESSURE.
CAUTION: CONTINUOUS OPERATION AT 120°F
(48.9°C) WILL REDUCE PUMP LIFE.
Compressors must have dryers and/or a water separator in the air
distribution system. Pumps that fail due to water in the air chamber
will not be covered under the limited warranty.
WARNING: Pump is NON-REPAIRABLE. Do not
modify or alter the pump in any way as this could
lead to air or liquid leaks resulting in property
damage, severe personal injury and/or death.
3
.8
[21]
.8
[19]
6.4
[162]