Related Manuals for Graco RTX 650
Summary of Contents for Graco RTX 650
- Page 1 Texture Sprayers First choice when quality counts. Electrical & Mechinical Rev. C 10/11 /07 Troubleshooting Manual ti4305a WARNING This manual should only be used by a qualified Service Technician.
- Page 2 Table of Contents Basic meter terminology and testing procedures....................3-9 Electric Texture Sprayers RTX 650 and TX 65: • Motor will not start..........................10 RTX 900,1250 and TX 90,125: • Motor will not start..........................11 RTX 750 and RTX 1000: •...
- Page 3 BASIC ELECTRICAL TERMINOLOGY In any discussion of electricity, there are three basic terms you will need to understand. CURRENT VOLTAGE RESISTANCE CURRENT: Current is the movement of the electrical charge. Current Flows through the wires from the power source to the load. Current is measured in AMPERES (AMPS, A or I).
- Page 4 BASIC ELECTRICAL TERMINOLOGY RESISTANCE: Resistance is anything that causes an opposition to the fl ow of current in a circuit. Resistance is used to control the amount of voltage and/or amperage in a circuit. Resistance is measured in OHMS - Ω. See Figure 3. A common component check would be motor and clutch field windings.
- Page 5 CONTINUITY TESTING Checking “continuity” is one of the most common tests in electrical troubleshooting. Continuity is the ability of a wire or electrical component to conduct current. When you use a continuity tester, you connect a circuit (the continuity tester) that you know works, to a wire or a component that may or may not work.
- Page 6 WIRE CONTINUITY TESTING Continuity testing will “NOT” fi nd wire fragmentation!! Example: 120 Vac input static voltage and drops to 119Vac load voltage. A good piece of wire will carry line and load voltage. Damaged / Fragmented Wire Damaged / Fragmented Wire Pinched Wire 120 Vac input static voltage and drops to 76Vac load voltage.
- Page 7 GROUND TESTING Improper installation or alteration of grounding plug could results in risk of electric shock, fire or explosion that could cause serious injury or death. The other function of the grounding plug is to protect the control board from static build up. If the plug is missing this could cause permanent damage to the control board.
- Page 8 CAPACITOR TESTING: A capacitor is an electrical component that stores electricity. Capacitors are usually used to help start a motor or make a motor run more eff The following instructions can be used to test any capacitor. WARNING! A CAPACITOR CAN SHOCK YOU EVEN WHEN A MACHINE IS UNPLUGGED. NEVER TOUCH CAPACITOR TERMINALS WITH YOUR FINGERS.
- Page 9 RECTIFIER (See Fig. 1) Now we come to the most popular application of the diode: rectifcation. Simply rectifcation is the conversion of alternating current (AC) to direct current (DC). This almost always involves the use of some device that only allows one-way fl ow of electrons. As we have seen, this is exactly what a diode does.
- Page 10 Motor will not run. RTX 650 and TX 65 Repair or See step 1.Do you have Step 1 Step 2 replace the 110-120 AC 110-120 AC Power switch ON. Power switch ON. over 100 AC volts? power Cord. Cord plugged in.
- Page 11 Motor will not run. RTX 900, 1250 and TX 90, 125 Green Wire (GND) Repair or Power Cord See step 1.Do you have Green replace the over 100 AC volts? White White Motor power Cord. Step 1 110-120 AC Power switch ON. Cord plugged in.
- Page 12 RotoFlex Motor or Compressor motor will not run. RTX 750 and RTX 1000 See pages 00, for the steps. Repair or See step 1.Do you have replace the over 100 AC volts? power Cord. Repair or See step 2. Do you have replace White over 100 AC volts? wire or wire splice.
- Page 13 RotoFlex Motor or Compressor motor will not run. RTX 750 and RTX 1000 Step 1 Step 2 Step 3 110-120 AC 110-120 AC 110-120 AC Cord plugged in. Cord plugged in. Power switch ON. Wires connected. Wires connected. Cord plugged in. Meter on AC Volts Meter on AC Volts Wires connected...
- Page 14 RotoFlex Motor motor will not run. RTX 750 and RTX 1000 Does the See Motors Air Compressor will not run. Step 1 motor run? 110-120 AC Power switch ON. Cord plugged in. Wires connected to selector switch. Selector switch ON. See step 1.
- Page 15 Air Compressor Motor motor will not run. RTX 750 and RTX 1000 Step 1 Does the 110-120 AC Power switch ON. See Motors Rotoflex motor will not run. Cord plugged in. run? Meter on AC Volts Step 2 110-120 AC Power switch ON.
- Page 16 RTX 1500 Electrical and Air Ladder Diagram Power cord plugged in and Power Switch Load Blk Neutral Wht 120V Grnd Main Motor/Air Power Switch Compressor 117693 Main Valve Coil 15D559 287326 Valve assembly Air Flow The Switch will remain closed Sensor Switch until air flow is present.
- Page 17 RTX 1500 Electrical and Air Ladder Diagram Power cord plugged in and Power Switch Load Blk Neutral Wht 120V Grnd Main Motor/Air Power Switch Compressor 117693 Main Valve Coil 15D559 287326 Valve assembly Air Flow The Switch will remain closed Sensor Switch until air flow is present.
- Page 18 RTX 1500 Electrical and Air Ladder Diagram Power cord plugged in and Power Switch ON and IN the PRIME MODE Load Blk Neutral Wht 120V Grnd Main Motor/Air Power Switch Compressor 117693 Main Valve Coil 15D559 287326 Valve assembly Air Flow The Switch will remain closed Sensor Switch until air flow is present.
- Page 19 RTX 1500 Electrical and Air Ladder Diagram Power cord plugged in and Power Switch ON and Gun Trigger Closed Load Blk Neutral Wht 120V Grnd Main Motor/Air Power Switch Compressor 117693 Main Valve Coil 15D559 287326 Valve assembly Air Flow The Switch will remain closed Sensor Switch until air flow is present.
- Page 20 RTX 1500 Electrical and Air Ladder Diagram Power cord plugged in and Power Switch ON and Spray Gun Trigger Open Load Blk Neutral Wht 120V Grnd Main Motor/Air Power Switch Compressor 117693 Main Valve Coil 15D559 287326 Valve assembly Air Flow The Switch will remain closed Sensor Switch until air flow is present.
- Page 21 1030FC Electrical and Air Ladder Diagram Rotary Switch in the Engine Clutch Coil Power 15B671 Wht. Com. Engine ROTORY Red High SWITCH 12-18VAC Blk. Off Yel. Med. Used Blu. Prime Thermistor Grn. Low Pinion Assembly 245399 234234 Control Board Control Board must 30psi to operate! Compressor...
- Page 22 1030FC Electrical and Air Ladder Diagram Rotary Switch in the Prime Mode When the rotary switch is in the Prime position the Control Board will send out 8-12VDC to the clutch and the pump will engage and prime the system. Note: The dump valve remains open. Engine Clutch Coil Power...
- Page 23 1030FC Electrical and Air Ladder Diagram Spraying Mode: In order to spray the control board must senses 30psi or higher and the rotary switch must be in one of the 3 settings Low/Med./High. When the spray gun is triggered the flow switch will close, sending a signal to the control board.
- Page 24 GM 1030 Tex Sprayer 1. PRESSURE SWITCH (normal open) Closes when 30 psi of pressure is maintained. 2. Differential PRESURE SWITCH (normal open) Closes when 5 cfms of air flow is maintained or when a air leak is present. 3. Combination gauge and SAFTEY SWITCH (normal closed)Interrupts electrical flow to the clutch stopping pumping (not engine) when pressure reaches 1000 psi.