Troubleshooting
3A3489T 27
Troubleshooting
Problem Cause Solution
Unable to fill or
pressurize the pot with
water.
The emergency stop
(L) is engaged.
Disengage the emergency stop (L).
The air supply is
inadequate.
Make sure the air compressor is capable of suppling the minimum
air flow requirements for your system. See , page 50. Make sure
the air inlet pressure gauge reads 100-175 psi (6.8-12 bar,
0.68-1.2 MPa). If the gauge does not read 100-175 psi, check the
air compressor for proper setup. Make sure the air inlet filters are
clean, and replace if necessary.
Inadequate water
supply to the pump.
Systems with water tanks: Make sure the water tank is full and
the inlet ball valve is open. Clean or replace water inlet filter if
necessary. Make sure all fittings connections are tight.
Systems with pressurized supply connections: Ensure water
supply connection is connected and pressurized. Check that water
supply meets appropriate pressure and flow requirements. Ensure
all fitting connections are tight. Check inlet water pressure
regulator for proper flow direction installation. See Parts, page 36.
Check inlet water pressure regulator screen filter for debris, clean if
possible. Replace regulator if no flow can be passed through
regulator.
The water pump air
regulator is
malfunctioning.
Disengage the blast control switch (A). Adjust the pump inlet air
pressure regulator until the pump air pressure regulator gauge
reads 100 psi (6.9 bar, 0.69 MPa). If you are unable to attain this
setting, check the air inlet filters and make sure the supply air
pressure is greater than or equal to 100 psi. If the above steps do
not resolve issue, replace the pump air pressure regulator.
The water pump is
malfunctioning.
Rotate 3-way selector valve to OFF position. Open rinse valve and
ensure pump cycles, and water flows from rinse hose. Close rinse
valve and verify that pump stalls. If pump continues to creep or will
not prime, refer to manual 333397 for pump service.
The pop-up cannot
seal.
Make sure the pop-up is clean and free of debris in the o-ring
sealing area. Check for proper pop-up alignment in the closed
position (there should be no gaps between the o-ring and the
pop-up). Remove the o-ring and make sure the o-ring gland is
clear of debris. Replace the o-ring and /or pop-up if worn.
The water pressure
regulator is
malfunctioning.
Adjust the water pressure regulator until the pot pressure gauge
reads 185 psi (12.75 bar, 1.275 MPa). If this adjustment is not
possible, service the water pressure regulator. Refer to your
regulator manual. See Related Manuals, page 3.
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