Figure 2-1 (1). Control panel, block-off plate, thermostat sensing bulb and control box back panel removal and installation.

TM 5-4120-273-15

NOTE: TAG AND DISCONNECT ELECTRICAL LEADS AS NECESSARY.

CONTROL PANEL:

STEP 1 - REMOVE THERMOSTAT CONTROL KNOB BY LOOSENING SETSCREW.

STEP 2 - REMOVE NUT FROM FAN SPEED SWITCH.

STEP 3 - REMOVE SELECTOR SWITCH KNOB BY LOOSENING SETSCREWS.

STEP 4 - UNSCREW ELECTRICAL CONNECTOR.

STEP 5 - REMOVE CONTROL BOX BY REMOVING SCREWS (4).

MEC 4120-273-15/2-1

Figure 2-1 (1). Control panel, block-off plate, thermostat sensing bulb and

control box back panel removal and installation.

Note. Remove discharge and intake grilles and filter,

d. Power Sources.

if unit is to be used with ducts carrying air to and from

the conditioned- space. Install grilles and filter into the

(1) Model CV-6-3-08-400. Operates on

duct.

208 volt, 400 cycle, 3 phase power.

Note. Remove the CB inlet cover (fig. 3-4) if a

(2) Model CV-6-1-15-60. Operates on 115

chemical and biological filter unit is to be attached to the

volts 50/60 cycle, single phase power.

unit.

c. Installing Unit. Bolt unit to floor or other

(3) Power receptacle connector. Receptacle

flat surface. Refer to base plan (fig. 1-4) for di-

is located at rear of unit above the condenser coil

mensions. An additional fastening device (fig.

air inlet. Connect the proper electrical power sup-

13) is provided on the upper rear side of the unit

ply source to this receptacle using a plug or recep-

for additional mounting rigidity if required. Con-

tacle alternate. Alternate electrical power connec-

nect drain hose to drain fitting at bottom of unit

tion openings are provided at both sides and front

to lead condensate away from unit. The units are

of the unit, any location may be used by inter-

provided with four drain plugs installed. Remove

changing the power receptacle at rear of the unit

plug prior to installing the drain hose.

and one of the cover plates at sides or front of the

2-2