Recent content by dreese

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    No water during high pressure rinse

    Does the HP pump continue to run during the pass? If not, my money would be on the main tank low water sensor (lower prox switch on side of main feed tank) showing a fault . Shorting sensor / loose wire at the pump node input card / tank intermittently running low on water / potential problem...
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    Lexair valve LW4000 part number?

    Probably the o ring and teflon wear ring in the plunger ass'y going out. Rebuild kit for Lexair valve PDQ part # 63270 (old style LexAir, valve cap threads onto body); 03010122 (newer style, valve cap held on with 4 bolts)
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    Trade shows to look forward to?

    Check out https://www.heartlandcarwash.org Heartland Car Wash Association
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    replaced infloor heating lines and it doesnt work well!

    IMHO, your installer was probably used to installing radiant heating in a building, not in a car wash. You are facing a flow issue - the fact that forcing more fluid thru the tubing by restricting flow in another bay "makes it better" tends to support this. Again IMHO, 1/2" tubing typically...
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    LW4000 High Pressure (arch) issue

    IMHO, doubt it's an undersized feed hose. If the pump was being starved it would starve during undercarriage operation as well as at the arch. Slight chance of the check valve in the holding tank intermittiently sticking,but this is a stretch. Same reasoning with the unloaders. If you have 2...
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    Bolting down dryer frame

    Bolt frame together with 3/8" (length appropriate) stainless steel bolts, SS washers, and SS Nyloc nuts (Nyloc nuts resist vibration better than lock washers in the long run, 304 SS OK). Set / anchor frame to concrete using 1/2" x 4 1/2" (or so) stainless steel wedge anchors (not sleeve...
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    Laserwash 4000 Virtual Treadle Issue

    Your back up loading eyes (photo eyes closest to the exit end of the bay) are either being blocked or are failing. When they cannot see themselves during the loading process programming will instruct all vehicles to back up when they hit the stop eyes - the thought being to slow down the...
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    PDQ Laser 4000 -Low Pressure Issue

    If this is happening on all lo pressure chem passes - starts OK, all solution quits but bridge / trolley continues to move, then solution comes back later in the cycle - I think either the float level switch (little grey paddle switch ) in the solution tank is starting to short out or you are...
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    PDQ laserwash 4K not sizing correctly

    The pictures show the new style (smaller, black) ultrasonic and so this site has been upgraded. The old style (larger, blue) ultrasonics were, in fact, very pricey and probably what were originally quoted (some distributors have old stock on hand, and possibly it was not specified that the site...
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    PDQ Laser 4000 u/c issue

    I would first shut off water feed to your weep to be sure it's not coming from there. The Lexair valves are normally open, air operated valves. Getting bleed thru at the undercarriage typically means the u/c valve is not closing fully. Make sure you have around 100 psi of air going to the...
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    PDQ Laser 4000 -Low Pressure Issue

    Check the water level in the solution tank / tank level float switch during the chemical pass. If you are running low on water during the chem pass or if you are getting an intermittent false read from the level switch, the solution pump will stop but the arch or bridge will keep going around...
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    Dog Wash Water Pressure Too Low

    If all of your water feed is going thru an injector being fed by a chemical manifold and then out the sprayer head, the injector is the restriction point and the problem is probably volume and not pressure. You could plumb a "bypass" solenoid (loop) around the original solenoid and chem feed...
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    Laser 4000 printer? door?

    1. Green light on printer means power is present. Start with the basics - is it a thermal (Omni) printer and regular paper loaded by mistake? Then do a printer head self test - turn off power, hold down LF button, turn back on - printer should print a random pattern. Then try turning off...
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    R/O membranes

    I would suggest soaking the carbon media for 12 - 18 hours, then doing a manual regeneration and flush before hooking it up to your membrane(s).
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    Motor Starter for 1/3 HP Motor???

    For what it's worth, the oscillating motor on the old PDQ LaserDri (220 vac fractional HP motor, but the same principle applies) pulled power directly from the DS main fan motor contactor (first motor to start). Just be sure the setting on the overload on the motor contactor you use can be...
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