TMG TMG-HW28, Руководство по эксплуатации продукта

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FLUID SYSTEM DIAGNOSTICS - Trigger Gun/Spray Nozzle
PROBLEM POSSIBLE CAUSE SOLUTION
No nozzle flow from nozzle
when trigger depressed.
Broken piston rod in trigger gun If water flows through discharge hose without gun, check
trigger gun valve piston rod and replace ifnecessary.
Missing metal insert in trigger
gun (European style gun)
Inspect to assure insert is in place.
Blockage in system past gun Check nozzle or spray accessory for blockage and clear it.
Excess pressurewhen
trigger gun isreleased
Excessive pressure spikes
After unloader increases pressure to a maximum, further
adjustment will only increase the
pressure spikes. Re-adjust.
Flow not stopping when
trigger gun released
Broken return spring on trigger
gun
If trigger action is too loose, return spring may need replaced.
Debris in gun valve Debris in gun valve can stop piston return. Clear debris.
Trigger action sticks Keeper plug too tight
It may be possible to loosen plug slightly without leakage but
it will likely need replaced.
Trigger gun leaks
Worn or bad o-ring Check trigger gun o-rings for ware or damage and replace.
Stripped or loose connections
Physical damage may not be apparent but unseen warping
from freezing or sever overpressure
maystill cause leaking.
No chemical
Chemical valve closed
Black nozzle
Open chemical valve. If It chatters with no chemical delivery,
air is being drawn from the
upstream side of the pump. Check fittings, connections and
ensure the inlet line is fully submerged into the chemicaljug.
Chemical dried up in the injector Inspect and clean as necessary.
Chemical foot strainer clogged May be a strainer or check valve. Ensure that the ball is not
stuck or clogged.
Chemical line kinked Chemical line kinking or binding prevents chemical delivery.
Chemical line too long
An overly long chemical line can prevent the pump from
drawing chemical into the system. Try
installing a shorter line.
Chemical too dilute Verify chemicalstrength.
No adjustment for low pressure Downstream injectors only - Low pressure is required for
most injectors to draw chemical. If no
adjuster exists it may need low pressure spray nozzle
installed on the lance.
Incorrect injector orifice
If not properly sized for the systems rated output, chemical
delivery problems will result. Check
serial plate for specs.
Excessive chemical
Valve improperly adjusted, check
knob on injector
To properly adjust, a chemical flow meter may be used to
precisely measure chemical flow.
Chemical dilutionto strong Verify chemicalstrength.
Spray pattern irregular Clogged nozzle Spray pattern will be distorted if nozzle is clogged.
Volume proper, pressure
low
Nozzle to large Ensure that the nozzle is sized properly sized for the system
Internal nozzle wear A loss of pressure may result form gradual nozzle wear.
Replace a nozzle of correct size.
Pressure proper, volume
low
Clogged nozzle
Spray pattern will be distorted if nozzle is clogged. Check
nozzle for clogging if the unit has a
pressure unloader.
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