UNIT EMERGENCY OPERATION

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TM-55-1925-273-10-2 Inland and Coastal Large TUG (LT) NSN 1925-01-509-7013 (EIC XAG) Manual

Figure 1. Air Conditioning Condenser Unit

TM 55-1925-273-10-2

0129 00

OPERATOR'S MANUAL

INLAND AND COASTAL LARGE TUG (LT)

OPERATION UNDER UNUSUAL CONDITIONS

AIR CONDITIONING SPLIT PLANT OPERATION AND RADIO ROOM ROOFTOP AIR CONDITIONING

UNIT EMERGENCY OPERATION

INITIAL SETUP:

References:

Personnel Required:

WP 0082 00 (volume 1)

One Watercraft Engineer, 88L

One Watercraft Operator, 88K

GENERAL

The air conditioning system normally has both air conditioning plants in operation. The Normal to Split Plant Operation

procedure aligns the system for use with one air conditioning unit operating. The Split Plant To Normal Operation proce-

dure returns the system to operation with both air conditioning plants in operation.

NORMAL TO SPLIT PLANT OPERATION

NOTE

The air conditioning system normally has both air conditioning plants in operation. This proce-

dure aligns the system for use with one air conditioning unit operating.

Shut down one condensing unit:

Close the DEHYDRATOR INLET valve (figure 1, item 1) on the condenser being shut down.

Allow the compressor to operate until it is shut down automatically by the suction pressure switch.

Align air conditioning piping:

OPEN RFAC-39, LIQUID LINE CRVR CO. (figure 2, item 1) (overhead).

OPEN RFAC-41, SUCT LINE CRSVR COV. (figure 2, item 2) (overhead).

Secure general service piping. CLOSE the following valves for the condensing unit being shut down:

Air conditioning condensing unit 1:

(1)

GS-33, A/C COND No. 1 SPLY (figure 3, item 1)

(2)

GS-37, WTR RGLTR COV (figure 3, item 2)

(3)

GS-70, WTR RGLTR COV (figure 3, item 3)

Air conditioning condensing unit 2:

(1)

GS-34, A/C COND No. 2 SPLY (figure 3, item 4)

(2)

GS-36, WTR RGLTR COV (figure 3, item 5)

(3)

GS-69, WTR RGLTR COV (figure 3, item 6)