Nordson NH-4, Руководство пользователя по изделию

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NH-4 Fluid Heaters
19
Part 1602369-03
E
2020 Nordson Corporation
Heat Limiter Replacement
WARNING: Remove power, relieve fluid and air pressure, and allow heater
to cool down before performing any maintenance. Failure to observe this
warning may cause serious injury to personnel and/or damage to
equipment.
1. Remove the thermostat. Refer to Thermostat Removal on page 17.
2. Disconnect the lead wire L1 from the heat limiter.
3. See Figure 8. Carefully pull the heat limiter out of the HL bore (2) in the
fluid passage body.
4. Install the heat limiter into the HL bore (2) in the fluid passage body.
5. Connect the lead wire L1 to the heat limiter.
6. Install the thermostat. Refer to
Thermostat Installation on page 17.
Heater Cartridge Replacement
1. Remove the thermostat. Refer to Thermostat Removal on page 17.
2. Disconnect the wire lead L2 from the cartridge.
3. Remove the heater cartridge.
Standard Heaters:
a. Remove the socket head screw and lock washer located in the
bottom of the fluid passage body.
b. Place a 6.4 mm (
1
/
4
in.) diameter rod, approximately 254 mm (10 in.)
in length, into the socket head screw hole against the drive-out plug.
c. Carefully drive the heater cartridge out of the fluid passage body.
Stainless Steel Heaters: Remove the heater cartridge from the top of
the fluid passage body.
4. Install the heater cartridge into the fluid passage body.
Standard heaters: Make sure the drive-out plug is installed in the fluid
passage body before installing the heater cartridge. Install the socket
head screw and lock washer into the bottom of the fluid passage body
and tighten securely.
5. Connect wire lead L2 to the heater cartridge.
6. Install the thermostat. Refer to
Thermostat Installation on page 17.
Fluid Heating Reservoir Replacement
WARNING: Remove power, relieve fluid and air pressure, and allow the
heater to cool down before performing any repairs. Failure to observe this
warning may cause serious injury to personnel and/or damage to
equipment.