Instructions - Parts ® Viscon LT 3A2824B Fluid Heater EN For variable heating of fluids. Not approved for use in explosive atmospheres or hazardous locations. Model No. 16T525 1750 W; 7.3 A; 240VAC; 50/60Hz, 1 Phase 2000 psi (14 MPa, 138 bar) Maximum Working Pressure Important Safety Instructions Read all warnings and instructions in this manual. Save these instructions. TI19998a 9902471 Conforms to UL Std. 499 CSA Std. 22.2 No.
Contents Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical Installation Drawing . . . . . . . . . . . . . . . . 5 Component Identification . . . . . . . . . . . . . . . . . . . . 6 General Information . . . . . . . . . . . . . . . . . . . . . . 7 Selecting Tubing . . . . . . . . . . . . . . . . . . . . . . . . . 7 Mounting Heater . . . . . . . . . . . . . . . . . . . . . . . . .
Warnings Warnings The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
Warnings WARNING TOXIC FLUID OR FUMES HAZARD Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed. • Read MSDSs to know the specific hazards of the fluids you are using. • Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
Installation Installation Typical Installation Drawing The typical installation drawing is only a guide. Your Graco distributor can assist in designing your system.
Component Identification Component Identification AB AA AE AD AF AH AG AC ti19998a Key: AA Temperature control AB Heater light (illuminated while heating) AC Heater inlet, 3/8 npt(f) AD Heater outlet, 1/4 npt(f) AE AF AG AH Outlet thermometer Mounting bracket Heater plug Insulating washers FIG.
Component Identification Selecting Tubing General Information • Select system components that meet temperature and pressure ratings listed in Technical Data, page 20. The heater’s normal output range is adjustable from 84-180°F (29-82°C). • To prevent fire and explosion, locate heater away from all flammable materials and where operators will not come in contact with hot metal surfaces. • To avoid burns, insulate and/or label lines and components exiting heater that may become hot.
Component Identification Mounting Heater Heater controls must be easily accessible. The mounting surface must be able to support the weight of the heater and fluid, and any stress caused during operation. Wall Mounting Use included wall bracket 16R988 and insulating washers (29), part number 167002, quantity 2. See FIG. 4. Use wall bracket as a template to mark bolt holes. Bracket 16R988 (FIG. 4) 1. Use 1/4 in. bolts of appropriate length and lock-washer (CC), not supplied, to mount bracket. 2.
Component Identification Fluid Connections and Accessories To prevent serious injury caused by component or equipment rupture: • Never install a shutoff device between the heater and gun as this will trap the heated fluid and not allow for expansion. • Never use a fluid regulator as a shutoff device if it is installed between the heater and gun • Provide a means for adequately handling fluid expansion caused by heat.
Component Identification Electrical Connections Power Cable Connections The heater power cable uses a 3 conductor cable and a NEMA L6-20P twist lock connector. If another connector is used, follow the table below for correct wiring. This equipment must be grounded. All electrical wiring must be done by a qualified electrician and comply with all local codes and regulations.
Operation Operation Pressure Relief Procedure Initial Flushing Follow the Pressure Relief Procedure whenever you see this symbol. This equipment stays pressurized until pressure is manually relieved. To help prevent serious injury from pressurized fluid, such as skin injection, splashing fluid and moving parts, follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or servicing the equipment.
Operation Setting Heater Control (Refer to FIG. 6) 1. Set the heater control knob (9) to a trial setpoint of 4 or 5. 2. Start the pump and circulate fluid through the system at a very low flow rate of about 10-12 oz/min (0.30-0.35 liter/min). 3. After the red heater light (AB) turns off, read the temperature on the thermometer (38). If it does not match the desired temperature, adjust the setpoint. AB 9 35 ti20002a FIG.
Troubleshooting Troubleshooting PROBLEM No heat and heater indicator light is off. No heat but heater indicator light is on. Heat but heater indicator light is off. CAUSE Heater power off or circuit breaker tripped. Bad thermostat (17). Bad overtemperature sensor (19). This is a high temperature limit fuse and must be replaced if blown. Bad heater cartridge (20). Bad light. SOLUTION Turn heater power on or reset circuit breaker.
Repair Heater Temperature Controls See FIG. 7. Control knob (9) sets temperature of heater. Indicator light (8) turns on when thermostat is heating and off when heater reaches setpoint. 22 21 17 8 12 9 1 12 ti7008b Power in FIG.
Repair Heater Cartridge Thermal Limit Sensor 1. See Before Beginning Repair, page 14. Relieve pressure. 1. See Before Beginning Repair, page 14. Relieve pressure. 2. Wait for heaters to cool. 2. Wait for heaters to cool. 3. Testing: Use a multimeter to check resistance across cartridge leads per the Technical Data chart. Also check that neither lead has continuity to the cartridge case. 3. Testing: Check that you have continuity across the two leads.
Repair Indicator Light Heater Thermostat Switch 1. See Before Beginning Repair, page 14. Relieve pressure. 1. See Before Beginning Repair, page 14. Relieve pressure. 2. Wait for heaters to cool. 2. Wait for heaters to cool. 3. See FIG. 7. Loosen two screws (12) and remove shield (21). 3. Testing: See FIG. 10. With thermostat probe (JJ) above 75°F (24°C), and below 160°F (71°C), the continuity across the contacts should open when turned off, and close when turned up toward 8.
Repair mostat switch from bracket. Pull thermostat probe (JJ) slowly out of heater core (2). 8. Insert new thermostat probe into core with heat sink compound 110009. Use screws (25) to install new thermostat switch behind bracket face and install control knob. 9. Reattach jumper wires (22) and reassemble heater in reverse order of disassembly. • • Stretch thermostat probe coils (KK) down to contact top of core.
Parts Parts ; ; ; 723 Blue Brown .. ; ; Green/ Yellow Green/ Yellow Power from Brown Blue Control Box & ) 240 V Lamp 5 OFF 240 V 1750 Watt & 1 Apply a thin film of heatsink compound (26). 2 Stretch capillary coils (KK) down to contact top of core (2).
Accessories Ref Part 1 24K987 2 24K988 3 24K992 4 101754 5 24K991 7 166863 8 114286 9 24K979 10 119924 11 16T187 12 --13 --15▲ 189930 16 249521 17 24K978 18 116343 19 24K980 20 16T173 Description Qty HOUSING, heater 1 CORE, heater, spiral 1 INSULATOR, heater 1 PLUG, pipe 1 BUSHING, reducing, 1-1/5 x 3/8 1 FITTING, nipple, reducing 1 LIGHT, indicator, 240V 1 KNOB, control, heater 1 BUSHING, strain relief, 90 degree 1 HARNESS, power, heater 1 SCREW, machine, hex serrated 4 LABEL, identification 1 LABEL, ele
Technical Data Technical Data Maximum Working Pressure . . . . . . . . . . . . . . . . . . . . . . Maximum Amps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum Fluid Temperature . . . . . . . . . . . . . . . . . . . . . . Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Heater Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Heated Core Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Fluid Path . . . . . . .
Technical Data Dimensions 2.9 in. (7.3 cm) 2.5 in. (6.35 cm) 15.3 in. (38.7 cm) 1/4 npsm Fluid Outlet 70 in.
Graco Standard Warranty Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective.
