R and V Works FF6 Informations techniques télécharger pdf (Page 24)

Compressor Application Manual

6.3 - PTC Relay

With the help of an ohmmeter, measure

the ohmic resistance between terminals

2 and 3. At room temperature, the figures

must be near those in the above table:

EM relay with external electrical bridge

In the same way as with relays in the PW and F/EG

groups, the EM compressor relays are suitable for

using a start capacitor (fig.18).

A starting capacitor in applications where this

component is required, must be used by removing

the bridge between the terminals 3 and 4 and

connecting the capacitor between these terminals

(see fig. 18 and 19). This modification does not

alter the performance characteristics of the relays.

Figure 18 - Standard starting

relay

Electrical

Bridge

Figure 19 - With capacitor

Figure 17 – PTC

Relay – PTC*

Ohm Resistance

(! = OHMS)

8EA1BX

7M4R7XXX / 8M4R7XXX / 8EA14CX

8EA4BX / 8EA3BX / 8EA21CX

8EA5BX

7M220XXX / 8M220XXX / 8EA17CX

2,8 a 5,2 !

3,8 a 5,6 !

3,5 a 6,5 !

14 a 26 !

17,6 a 26,4 !

* The

(X)(X)

(X) can be a number or a character.

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R and V Works FF6 Informations techniques Page 24