Maintenance And Servicing; Control Switch Replacement; Heating Element Replacement - Barnstead HP2625R Operation Manual And Parts List

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Maintenance and Servicing

Warning
To avoid electrical shock, always dis-
connect from power supply before
maintenance and servicing. Refer
servicing to qualified personnel.
Note
Perform only maintenance described
in this manual. Contact an authorized
dealer or our factory for parts and
assistance.

Control Switch Replacement

1.
Disconnect hot plate from power supply.
2.
Turn hot plate upside down and remove bottom
cover.
3.
Remove the knob and the nut securing control.
4.
Disconnect six wires from control switch. Identify
or mark wires disconnected to ensure proper
placement and connection when reinstalling.
Remove defective control switch.
5.
Reconnect the wires removed in step (4) to the
new control switch. Secure control switch with
the nut and the knob.
6.
Replace bottom cover and secure with four
screws.
7.
Turn hot plate upright and reconnect to power
supply.

Heating Element Replacement

1.
Disconnect hot plate from power supply.
2.
Turn hot plate upside down and remove bottom
cover.
3.
Remove the knob and the nut securing control.
4.
Disconnect six wires from control switch. Identify
or mark wires disconnected to ensure proper
placement and connection when reinstalling.
Remove the control switch.
5.
Bend the element leads straight up and then
remove in order, the control case, insulating
spacer, top section of case, insulating plate, and
insulating block.
6.
Remove defective heating element and insert
new element in the same position. Remove
9

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This manual is also suitable for:

Hp2624rHp2620rHp2620r-26

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