Xylem MM 714C Replacement Pump and Burner Switch Arm Con Manual do Utilizador descarregar pdf (Página 3)

3

NOTCH

NOTCH

5 / 5-M

TERMINAL PANEL

ORIENTATION

24

1

BLUE RED

3

31

42

A

C

E

TOWER

TUBE

FITTIN

G

H

U

B

S

WITC

H



H

O

U

S

IN

G

T

E

RMINA

L

CO

NNE

CT

IO

NS

S

WIT

C

H



C

O

V

E

R

P

U

MP



T

E

R

MIN

A

L

P

A

N

E

L

B

U

R

N

E

R



T

E

R

MIN

A

L

P

A

N

E

L

C

O

N

D

U

I

T



C

O

N

N

E

C

T

O

R

N

AM

EPLAT

E

NA

ME

P

L

A

TE

BASE



PLAT

E

B

D

d. Replace Switch Housing, Switch

Assembly and Reconnect Wiring

• Replace switch housing and fasten to

base plate with four screws (E).

•

Move burner switch arms to upright position

by reaching through nameplate opening

and holding burner switch lever midway

between stops. Carefully set burner

terminal panel in position and fasten with

screws (D). Do not force. (See diagram at

lower right for proper orientation of

terminal panel).

•

Move pump switch arms to upright position

by reaching through nameplate opening

and holding pump switch lever midway

between stops. Carefully set pump

terminal panel in position and fasten with

screws (D). Do not force. (See diagram

at lower right for proper orientation of

terminal panel).

• Check visually to see that contact arms

are in proper position between terminal

panel contacts and move lever up and

down to see that switch operates freely

and smoothly.

• Carefully slide switch assembly over

tower tube and secure with four hex

nuts (B).

• Install conduit connector and wires to

the integral fitting hub on switch

assembly.

• Reconnect wiring to terminal panel in

exactly the same position as removed.

• Replace switch cover and fasten with

two screws (A).

• Replace nameplate and fasten with

two screws (C).

F

G

H

I



c. Remove and Replace Switch Arm Contacts

• Remove two screws (F) and lift off bus bar

(G), contact arms (H) and insulator (I).

• Place new insulator (I), contact arms (H) and

bus bar (G) in position and fasten with two

screws (F). Make sure the contact arm blades (H)

are in alignment and at right angle to insulator.

Proceed to Step 2 to Test Control

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