The nozzles are attached to the front of the wand, which resembles a pistol in form. At
the exit from the wand is a Swagelok 1/4" tube fitting. This fitting uses a ferrule system
to form a leaktight seal to the nozzle. The interface end of each nozzle has a pre-swaged
front/rear ferrule set that will mate to the Wand exit fitting. The Swagelok nut has been
fitted with a large Teflon insulator that has been designed to keep you from getting
burned when changing or tightening a hot cleaning nozzle. Note: due to thermal
expansion and contractions, it may be necessary to re-tighten a nozzle occasionally
during operation, as small leaks around the nozzle fitting may develop.
Cleaning with the MPS-II is easy. Once the proper nozzle has been selected, and the heating
chambers are at operating temperature as is indicated by each 'heating chamber' pilot lamp
going 'off', you may begin cleaning.
Direct the nozzle at the part to be cleaned, pointed away from you and at approximately a
45 degree angle. Generate steam by fully pulling the trigger while simultaneously
depressing the black 'pump run button' at the rear of the wand, or alternatively the 'Manual
Steam Actuator' momentary switch on the Front Panel for about 3 seconds. High pressure
cleaning steam will exit immediately. Direct the flow of steam over the part to be cleaned,
bottom to top and side to side, or vice versa, such that residue is directed away from the
part and away from the operator. Some empirical experimentation may be required to
determine the best nozzle and cleaning procedure for
your
application.
After about 20 seconds the flow of steam will cease as the injected water will have been
vaporized and exited. Repeat the preceding procedure as often as is required to clean the
part. Each time that you depress the 'pump run button', or the 'Manual Steam Actuator'
momentary switch on the front panel, a latching relay inside the unit changes state and
directs the flow of water from 'heating chamber #1' to 'heating chamber #2'. This allows
one of the chambers to recover heat while you clean with steam from the other chamber,
and vice versa. The 'pump run button' may be depressed for as long as 5 seconds if a longer
duration of steam is desired. If you try to pump water while the unit still has steam in the
manifold, the pump motor may stall, resulting in a lack of any steam being generated. Wait
until all steam is gone before pumping more water into the chamber.
After a few cleaning cycles the steam may begin to lose its' ability to clean because the
heating chambers have cooled below the optimum operating temperature. To recover,
simply let the unit rest until the heating chamber pilot lamps have gone out, then commence
with the cleaning process. Note: Each cleaning application is different. Some tenacious
contaminants may require the hottest, highest-pressure steam to remove. In this case you
will need to allow each heating chamber to fully recover between cleanings. Other
contaminants may be removed even when the chambers have cooled to the point of spitting
hot water along with the steam. This varies by cleaning application. Va-Tran Systems, Inc.
may be consulted to design modified or customized systems to solve your cleaning
problems.
