d.Re-solder the wire lead to the replacement di- ode.

e.Apply a layer of RTV over the top of the Diode Assembly to encapsulate the lead and top of the diode.

Wire Lead

70 Amp

RTV

Diode

 

A-01166

f.Close up the Power Supply.

B.Relay Replacement

1.Remove the Right Side Panel per Section 5.04-B.

2.Move the Relay Hold-Down Spring to the side of the Relay Assembly.

3.Pull the Relay Assembly from the Relay Socket.

4.Install the replacement Relay Assembly by revers- ing the above procedure.

C.150 Amp REV Diode Replacement

The Diode Replacement Kit (Cat # 8-6152) is a direct parts replacement for the failed Diode Assembly in the Power Supply.

The following parts are supplied with each replace- ment assembly:

150 Amp, 800V Rev Diode Assembly (1 each)

1.06 inch diameter Thermal Interface Pad (1 each)

1.Turn OFF main input power to the Power Supply both at the Power Supply ON/OFF switch and at the main power disconnect.

2.Wait at least two minutes to allow the input ca- pacitors to discharge.

3.Open the Power Supply to gain access to the faulty Diode Assembly.

4.Locate the old Diode Assembly inside the Power Supply.

5.Remove the nut and washer securing the old diode assembly to the mounting surface.

6.Remove the nut securing the diode wire lead to the PC Board.

7.Make sure the replacement diode is a direct re- placement for the old one.

8.Install the replacement diode by reversing the above procedure and noting the following:

a.Wipe the surface clean where the replacement diode is to be installed.

NOTE

The thermal interface pads must be properly aligned when replacing the diode.

b.Position the thermal interface pad between the diode and contact surface where the diode will be installed.

CAUTION

Diodes can overheat if not properly installed.

c.Install the diode. Torque the nut securing the diode to 34 in-lbs (3.8 Nm).

d.Reinstall the nut and washer securing the re- placement diode wire lead to the PC Board.

D.150 Amp STR Diode Replacement

The Diode Replacement Kit (Cat # 8-6153) is a direct parts replacement for the failed Diode Assembly in the Power Supply.

The following parts are supplied with each replace- ment assembly:

150 Amp, 800V Str. Diode Assembly (1 each)

1.06 inch diameter Thermal Interface Pad (1 each)

1.Turn OFF main input power to the Power Supply both at the Power Supply ON/OFF switch and at the main power disconnect.

2.Wait at least two minutes to allow the input ca- pacitors to discharge.

3.Open the Power Supply to gain access to the faulty Diode Assembly.

4.Locate the old Diode Assembly inside the Power Supply.

5.Remove the nut and washer securing the old diode assembly to the mounting surface.

6.Remove the nut securing the diode wire lead to the PC Board.

REPLACEMENT PROCEDURES

46

Manual 0-2533

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Thermal Comfort 3000 manual Relay Replacement, Amp REV Diode Replacement, Amp STR Diode Replacement

3000 specifications

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