UPS 1000S/ UPS 1200S Uninterruptible Power Supplys Caterpillar

Door Latch

Usage:

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Illustration 1	g01292186
(1) Door Latch

There are two door latches (1) that are installed on each door in the UPS 1200. Both are on the right side of the cabinet door. One of the latches is located at the top of the door. The other latch is located at the bottom of the door. Refer to Illustration 1.

There are two styles of latches in the UPS 1200 depending on safely requirements.

One style requires a 5/16 inch hex key to open and the other does not require a key. it is hand operable to allow users access to user operable functions inside the cabinet.

The Maintenance Bypass Cabinet bottom latch differs from the top latch in that the bottom latch has a 20 degree offset pawl. Refer to Illustration 8.

Removal

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Illustration 2	g01292407
Hand Operable Latch Assembly (2) Knob (3) Gasket (Outer) (4) Large Lock Washer (Inner) (5) Large Nut (6) Small Nut (7) Small Lock Washer (8) Pawl (9) Small Lock Washer (10) Small Nut (11) Cabinet Door (Edge View)

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Illustration 3	g01292409
Hex Key Operable Latch Assembly (3) Gasket (Outer) (4) Large Lock Washer (Inner) (5) Large Nut (6) Small Nut (7) Small Lock Washer (8) Pawl (9) Small Lock Washer (10) Small Nut (11) Cabinet Door (Edge View) (15) Hex Key Aperture

Open the cabinet door to gain access to internal latch assembly.

Remove the small nut (10) at the end of the latch assembly.

Remove the small lock washer (9) .

Remove the Pawl (8) .

Remove the next small lock washer (7) .

Remove the second small nut (6) .

Remove the large nut (5) .

Remove the Large Lock Washer (Inner) (4) .

Remove the following parts out the front of the door: Knob (2), Gasket (Outer) (3) and the remaining latch assembly.

Installation

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Illustration 4	g01292407
Hand Operable Latch Assembly

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Illustration 5	g01292409
Hex Key Operable Latch Assembly Hex Key Operable Latch Assembly (3) Gasket (Outer) (4) Large Lock Washer (Inner) (5) Large Nut (6) Small Nut (7) Small Lock Washer (8) Pawl (9) Small Lock Washer (10) Small Nut (11) Cabinet Door (Edge View) (15) Hex Key Aperture

Refer to Illustration 4 for a diagram of the latch assembly and part placement.

Place the Gasket (Outer) (3) over the end of the door latch assembly and seat it next to the Knob (2) .
Gasket (Outer) (3)

Diameter ... 2.5 cm (1 1/8 inch)

Place the threaded end of the assembly through the latch hole from the front of the door.
The Gasket (Outer) (3) should fit against the outer skin of the door.

Turn the Knob (2) fully counterclockwise.
The Knob (2) should be horizontal. The small threaded area should fully extend. If this is not the case, remove the Knob (2), refer to Step 4.a through Step 4.b.
1. Turn the Knob (2) over.
1. Insert the Knob (2) again.

Place the Large Lock Washer (Inner) (4) over the threaded end of the assembly. Move Large Lock Washer (Inner) (4) next to the inner skin of the door.

Place the Large Nut (5) onto the large threaded area of the latch assembly. Tighten the nut to 20.3 N·m (15 lb ft).

Tighten the Small Nut (6) onto the small threads of the latch assembly.
Do not tighten the Small Nut (6) all the way down.

Place the Small Lock Washer (7) over the end of the assembly, against the small nut.

Place the Pawl (8) onto the assembly next to the small washer so that it is standing up in a vertical position.
Note: Some cabinets have custom pawls and offsets.
Refer to "Latch Open Orientation" for specific applications.