Repair

Repair

WARNING

Read warnings, pages 4-5. Make sure the main power is off and heater is cool before repairing.

Hazardous Location Heaters: See FIG. 15 & 17

Non-hazardous Location Heaters: See FIG. 16 & 18

Primary Thermostat & Probe

1.Follow Pressure Relief Procedure, page 14.

2.Remove housing cover (18).

3.Hazardous Location Heater only: Loosen nut (27).

Non-hazardous Location Heater only: Loosen screws (25).

4.Loosen setscrew (26) in switch shaft (28).

5.Remove screw (16) and bracket (19) holding probe (EE).

6.Remove wires from the primary thermostat termi- nals (FF).

7.Pull thermostat probe (EE) out of heater block (3). Remove thermostat (24) from housing (1).

8.Hazardous Location Heater only: Remove screws (25).

Non-hazardous Location Heater only: Remove screw standoff (35) with washer (27).

9.Remove bracket from thermostat (24) and secure to new thermostat.

CAUTION

To avoid damaging capillary tube (GG), which can cause heater malfunction, do not kink or nick the tube.

To avoid shorting out the heater, do not allow capillary tube to contact the block terminal (3A). Follow step 10, below.

10.Liberally apply thermal lubricant (part no. 110009) to probe (EE) of new thermostat (24). Loop capillary tube (GG) several times and wrap the loops with tie strap (42-not shown). Insert probe in the heater block (3).

11.Continue reassembling in reverse order of disas- sembly. See Reassembly Notes, below.

Backup Thermostat

1.Follow Pressure Relief Procedure, page 14.

2.Remove housing cover (18).

3.Remove screws (HH) on backup thermostat (10) tabs, and remove the wires – one from heater block (3A) and one from line in (9B).

4.Remove the two screws (16), then remove the ther- mostat (10).

5.Liberally apply thermal lubricant (part no. 110009) to the bottom of the thermostat (10) and reinstall it in reverse order of disassembly.

Reassembly Notes

•Refer to FIG. 15 or 16 for wiring connections.

•Non-hazardous Location Heater only: Make sure gasket (47) is installed and aligned with electrical housing screw holes.

•Secure cover (18) with lockwashers (5) and screws (6 or 52); torque screws to 89 in-lb (10 N•m).

18

309524L

Page 17 Page 19
Page 18
Image 18
Graco 309524L important safety instructions Repair, Primary Thermostat & Probe, Backup Thermostat, Reassembly Notes
Page 17 Page 19

309524L specifications

The Graco 309524L is a versatile and high-performing airless paint sprayer designed for both professional contractors and DIY enthusiasts. This innovative tool stands out for its efficiency, ease of use, and excellent finish quality, making it a top choice for various painting projects, from small residential jobs to larger commercial applications.

One of the main features of the Graco 309524L is its robust power system, which delivers consistent pressure and flow. This ensures that users can achieve even coverage and a superior finish, reducing the likelihood of roller marks or brush strokes. The unit also boasts an adjustable pressure control system, allowing users to fine-tune the paint output according to the specific needs of the project. This feature enhances precision, particularly when working on intricate surfaces or detailed projects.

The Graco 309524L employs advanced technology in its design. It utilizes a "TruPulse" technology that continuously monitors and adjusts the pressure based on the requirements of the job. This results in a smoother application and optimal performance, leading to reduced paint waste and faster completion times. Additionally, the sprayer is equipped with a durable and lightweight frame, making it easy to transport and maneuver around job sites.

Another significant characteristic is the Rapid Clean technology, which simplifies the cleanup process. After completing a painting task, users can easily flush the system with water or solvent, ensuring that the sprayer is ready for future use without the hassle of a complicated disassembly process.

The Graco 309524L is compatible with a wide range of coatings, including latex, stains, and primers, broadening its utility for various projects. Its easy setup and intuitive controls enable users of all experience levels to achieve professional-quality results with minimal effort.

Moreover, the unit comes with a selection of spray tips and a flexible paint hose, providing versatility for different applications. Whether it's interior walls, ceilings, or exterior surfaces, this sprayer meets the demands of various projects with ease and efficiency.

In summary, the Graco 309524L is a reliable and innovative airless paint sprayer that combines power, precision, and user-friendly features. Its advanced technologies and versatile capabilities make it an excellent investment for anyone looking to enhance their painting experience, ensuring high-quality results on every job.
Top Page Image Contents