D-1000B Heater
Operations & Maintenance
Installation of Photocell procedures (Cont)
4. Slide control panel assembly (29) back into base (30). Ensure that electrical wires do not get pinched when
sliding control panel assembly into base.
5. Using a Phillip head screwdriver, install and tighten two screws (81) securing control panel assembly (29) to base.
6. Install upper heat shield (05).
7. Using an 8mm nut driver, install and tighten six screws (79) and two sheet metal screws (78).
8. Install the top cover and four quick release pins as shown in Figure 5-1.
9. Test heater in accordance with the operations manual. (See Chapter 6).
5.4.13 Removal and Installation of the Pressure Switch
5.4.13.1
Removal procedures:
1. Disconnect power cord from power source and allow heater to cool.
2. Remove four quick release pins and remove top cover (see Figure 5-1).
3. Using a Phillip head screwdriver, remove two screws (81) securing control panel assembly (29). Pull assembly
straight out and lay down exposing internal components and electrical wires.
4. Using an 8mm nut driver, remove two screws (79) securing pressure switch bracket (99) to base (30).
5. Pull pressure switch assembly and bracket (99) out of base.
6. Disconnect the red and white wire connector from back of the pressure switch (43) (see Figure 5-13).
7. Disconnect two silicone hoses (31) (see Figure 5-13) from the side of the pressure switch (43).
8. Using a Philips head screwdriver, remove two screws (100) securing pressure switch (43) to bracket (99).
9. Discard pressure switch.
Figure 5-13 – Pressure Switch
MAINTENANCE, and REPAIR PROCEDURES
5-18
DHS SYSTEMS LLC
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