Haskel 4B Serie Manuel De Fonctionnement Et D'entretien page 2

1.0 Introduction
The Haskel 4B Series Air Driven Pumps are continuously reciprocating pump/linear motor assemblies,
designed to be driven by conventional 30 to 100 psi compressed air, dry nitrogen, clean natural gas or
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CO gas. The drive gas and surrounding temperatures should be within a range of approximately 25°F to
150°F for reliable operation.
2.0 Installation, Startup, & Operation
2.1 Installation
A. Normal operating position of the Haskel 4" Series Air Driven Pumps is with the drive inlet and
exhaust above and the liquid inlet and outlet below. However, the pump will operate In any
attitude.
B. The mounting brackets at the rear make proper inline installation both easy and convenient for
most applications.
C. For maximum performance, use air drive line of 1/2" pipe or equivalent. Recommended particle
filtration of the air is 40 micron or better, with provision for removing excessive free water and/or
air compressor oil contamination. Reminder: Avoid air line lubricators.
D. Use liquid inlet line size equal to or larger than the NPT pipe size of the liquid inlet port.
E. Use outlet piping of any size if it is rated for the maximum pressure potential of the pump at stall.
If not, install a suitable safety relief valve.
2.2 Startup
A. To prime pump, loosen an outlet fitting so it will leak.
B. Turn on drive air gradually to slowly cycle pump. When liquid appears, tighten the fitting. The
pump is ready for operation.
2.3 Operation
A. Vary the outlet flow by throttling or regulating the drive air and/or by restricting the high pressure
liquid.
B. Control pressure at no flow (stall) with an air regulator on the air drive line or a pressure switch
(air pilot switch) that senses output liquid pressure.
CAUTION: To prevent excessive maintenance, avoid run away operation in an unloaded liquid system.
3.0 Routine Maintenance
Normal Maintenance requirements are limited to periodic relubrication of the cycling valve as follows.
3.1 Air Cycling Valve Lubrication and Assembly
Remove the cycling spool from the top cap and check the spool and o-rings, as follows:
A. Use Tru Arc pliers to remove the Tru Arc ring (8).
B. Use ordinary pliers to remove the end plug (3) and o-ring (4).
C. Push the cycling spool out with a probe through the drive inlet port. Inspect all o-rings on the
cycling spool, and replace any that are worn or damaged. Relubricate with Haskel 50866 grease
or any tight, high quality petroleum or silicone grease. Reassemble and test.
To inspect and service the sleeve and static o-rings after removing the cycling spool, follow steps
D through H.
D. Use the 28584 extractor tool to pull out the sleeve. If it sticks, use a screwdriver in the pry
grooves of the tool.
Air Driven Liquid Pump 4B Series • OM-16F
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