Dover Markem-Imaje 5200, Service Manual

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SECTION 6 Field Replaceable Parts
6–40
0855855eng 6/08
17.4.2 Melt Chamber Cartridge Heater with Thermostat (200W)
1. Remove the ink delivery module. See Section 6, Replacing the
Ink Delivery Module and the Ink Delivery Module parts
illustration.
2. Disassemble the melt chamber assembly from the heat shield by
removing the two screws.
3. Remove the screw (1), split washer (2), flat washer (3), and
thermostat (4) trapping the melt chamber thermistor (5) and
cartridge heater (6) and slide the cartridge heater out.
4. Disconnect the cartridge heater with thermostat wires, from
positions #1 and #2 of the green 8-position plug. Refer to Figure
6-9 and Table 6-1.
5. To replace the heater with thermostat, reverse steps 1 through
4 above, retaining the stacking order of the screws and washers.
Make sure there are no wires pinched between the melt chamber
assembly and the heat shield (3, Figure 6-27).
NOTE: Be careful plugging the connector into the backplane, as
it is possible to plug one pitch position off.
17.5 Limit Switch
The limit switch may need to be replaced in two places.
• Ink Door Lock
• Pump Stroke Counter (Figure 6-28)
17.5.1 Replacing the Ink Door Lock Limit Switch
1. Remove the limit switch by unfastening the two screws, two
split lock washers and two hex nuts. Refer to the
Print Station
parts illustration.
2. Disconnect the two wires from the terminals of the limit switch,
one at a time, to the same position on the new switch.
3. Mount the new limit switch onto the motor bracket using the
two screws, two split lock washers and two hex nuts.
1
2
3
4
6
5