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Replacing Power Supply 08PSS3401T (for Retrofit Kits 08PSS3401N and 08PSS3401X)

PELLERIN MILNOR CORPORATION

Figure 1: Mounting the Power Supply Board

Arrangement of Mounting Hardware

Legend

.

1.

 Power supply board

2.

 Mounting bracket, if used,

or Processor box

3.

 Nylon bolt, nuts and

spacer—three places

4.

 Metal bolt, nuts and lock

washers; nylon spacer—
one place: 

must be

located at one of the
grounded mounting
holes on the 

incoming

power side

 of the power

supply

1.1.

Kit 08PSS3401X (for Newer Machines)

—Merely swap out the old with the new power

supply. Make certain that a good connection is established between the ground trace on the

power supply board and the machine chassis, as shown in Figure 1. If the new power supply is

not a direct match for the old, contact the Milnor factory.

1.2.

Kit 08PSS3401N (for Older Machines)

—Various mounting brackets are supplied with

this kit. If your original equipment does not accommodate the new power supply, select the

hardware that permits you to loacte the new power supply about where the old one was.

The mounting hardware supplied with the kit attaches the power supply to its mounting bracket.

Hardware to attach the mounting bracket to the machine is not supplied with the kit. Use any

appropriately sized bolts, nuts and lock washers or self-tapping screws.

Recommended hardware installation is as follows:
1. If a mounting bracket will be used, determine how it will be attached. Carefully prepare the

Processor box as required to accept it, but do not install it until step 3.

2. Attach the power supply to the mounting bracket or directly to the Processor box, as shown in

Figure 1. One of the four bolts supplied with the kit is metallic. This bolt must be placed in

one of the two grounded mounting holes (hole through a metallic trace on the power supply's

printed circuit) on the incoming power side of the power supply. Ensure that the power

supply is grounded to the mounting bracket or Processor box by scraping the paint from

around the hole on the bracket or box with the metallic bolt. Be sure the metal nut and lock

washer do not touch any other component.

3. If a mounting bracket was used, install this assembly in the Processor box. Ensure that the

mounting bracket is grounded to the Processor box by scraping the paint from around one

pair of adjoining mounting holes on the bracket and the Processor box.

Summary of Contents for 08PSS3401T

Page 1: ...217 Access Date 20031217 Depth detail Applicability CUU Language Code ENG01 Purpose publication Format 1colA Document Replacing Power Supply 08PSS3401T for Retrofit Kits 08PSS3401N and 08PSS3401X PELLERIN MILNOR CORPORATION POST OFFICE BOX 400 KENNER LOUISIANA 70063 0400 U S A ...

Page 2: ...ly on machines that don t already have this resistor on the processor board It must be installed across the new power supply s 5 volt DC output conductors as shown in Figure 2 Please verify that all components listed in the kit parts list were supplied Contact the Milnor Parts Department if any items are missing WARNING 1 Electrocution and Electric Shock Hazards You can be electrocuted or seriousl...

Page 3: ...he kit attaches the power supply to its mounting bracket Hardware to attach the mounting bracket to the machine is not supplied with the kit Use any appropriately sized bolts nuts and lock washers or self tapping screws Recommended hardware installation is as follows 1 If a mounting bracket will be used determine how it will be attached Carefully prepare the Processor box as required to accept it ...

Page 4: ...ipheral boards to provide a sufficient load for the power supply If after replacing the power supply your machine experiences resets as explained in Section 4 contact Milnor Customer Service to determine if the problem is likely due to insufficient load on the power supply If this is determined to be the case you will need to install the resistor as explained in Section 3 2 2 Machines With 08BN an...

Page 5: ...h an ohmmeter measure the resistance across 5VDC and signal ground pins 3 and 10 on the 10 pin connector as shown in Figure 3 The resistor is connected in parallel with 5VDC circuit so if it is present the resistance will measure approximately 15 ohms If the resistor is not present the reading will be much higher over 1000 ohms 3 Electrical Connections The procedure for making electrical connectio...

Page 6: ...r supply 4 15 ohm 3 watt regulating resistor installed here if applicable see Section 2 5a Wire designation 5b Wire colors 6 pin harness supplied with kit Existing wire harness may be the same 6 Six pin connector processor board side 7 New power supply 8 Five pin connector incoming power side 9a Wire designation 9b Wire colors 5 pin harness supplied with kit 10 Metal oxide varistor MOV Observing c...

Page 7: ...e white caps provided Cut off the old connector the one that was attached to the old power supply and splice the new harness to the wires from the connector on the processor board matching the wires as shown in Figure 3 3 2 3 Processor to Power Supply Connections If Resistor Supplied With the Kit Is Omitted see Section 2 If your original processor to power supply wire harness has the same six pin ...

Page 8: ...PELLERIN MILNOR CORPORATION Figure 4 Milnor Tag B2T2003041 Showing Power Supply Adjustment Instructions End of BICUUR01 ...

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