Relay Board Component Explanation - Pitco MGII Technical Service And Exploded Parts

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Service manual (44 pages)

Table Of Contents

Table of Contents

Fuse:

F1 -

If fuse is blown, A.C. will not be lit.

Trouble Shooting Lights:

A.C. -

When lit, F1 Fuse and T1 Transformer are good.

S.O. -

When lit, A1 Computer is on and K10 Contactor should be energized.

H.D. -

When lit, A1 Computer is on and calling for heat, K11 Contactor should be energized

Relays:

K1 -

Heat Demand Relay, will be energized when A1 Computer calls for heat and when H.D. is lit.

K3 -

Side On Relay, will be energized when A1 Computer is on and A.C. is lit.

Connectors:

J31 -

Connects to A1 Computer

J32 -

To Side On and Heat Demand Contactors and Heat Feed Back.

J33 -

To 24VAC jumper harness.

J34 -

To Drain Switch and optional Basketlifts

J35 -

Input voltage from transformer

Relay Board:

Note:

J connectors are marked on the

relay board.

•With 24 VAC supplied to pin #2 at

connector J35 and a good F1 fuse, the

relay board will have a 24 VAC output

at pin #2 on connectors J33 and J34

and the A.C. indicator will be

illuminated.

Note: If the fryer is equipped with a

computer or solid state digital, at

connection J33 there will be a

jumper from pin #2 to pin #10 to

supply 24 VAC to pin # 2 at

connection J31 to supply the

controller with 24VAC.

•When the board receives a 24 VDC

side on input at pin #7 on connectors

J31 or J33, the S.O. indicator will

illuminate, the side on relay (S.O.) will

energize and there will be a 24 VAC

output at pin #4 on connector J32.

•When the board receives a 24 VDC

heat demand input at pin #6 on

connectors J31 or J33, the H.D.

indicator will illuminate, the heat

demand relay (H.D.) will energize and

there should continuity between pin #1

and pin #2 at connector J32.

L22-236 Rev 0 (04/03)