Tank thermostat replacement
Tank RTD replacement
(continued)
Disassembly and Repair
7-25
8. Connect the leads from the RTD to the 2-station porcelain connector.
,
9. Replace the cut-away piece of insulation with the foil side facing out.
It should not be necessary to tape the insulation in place. If tape is
used, it should be high-temperature tape, such as aluminum furnace
tape.
10. Install the hose-connector assembly plate with four screws.
11. Resume normal operation.
1. Remove the pump as detailed in steps 1 through 8 of Pump
replacement earlier in this section.
2. Remove the seven screws securing the tank enclosure, then remove
the tank enclosure and the tank cover.
3. Remove the hose connector assembly by removing the four screws
that secure it to the base and then disconnecting the hose electrical
plugs from the circuit board.
4. Remove the tank insulation and the bottom insulation.
5. Pull the rubber thermostat insulator from the tank thermostat and
slide it back along the thermostat leads.
6. Remove the tank thermostat by removing the two screws that secure
it to the tank (see Figure 7.54).
7. Untwist the two wire nuts which connect the leads of the tank
thermostat to two other wires, then discard the old thermostat.
8. Twist each lead of the new tank thermostat into one of the ceramic
wire nuts with one of the other wires.
NOTE: It does not matter which lead is connected to which wire
because the thermostat is not polarity sensitive.
9. Replace the thermostat with two screws.
10. Slide the rubber insulator over the thermostat.
Figure 7.54 -
Tank Thermostat Details:
1 TanWManifold Assembly
2 Ground Wire
3 Lo&washer
4 Ground Wire Screw
5 Thermostat Securing Screw
6 Thermostat
7 Porcelain Connector
0 Nordson Corporation 1994
All Rights Reserved
P/N 106 701A
41.2300SP - Issued l&4
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