3
PENBERTHY
MODEL MGS-314 SERIES AND MGS-314D SERIES LEVEL CONTROL SWITCH
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
4.2 Mounting the switch
Due to shipping vibration, it is possible the
magnet toggle will not be in the 'normal'
position for proper operation. If this occurs,
simply cycle the float past the switch once.
This will initialize it automatically.
1. Measure the distance from the top of the
indicating scale, on the magnetic level
meter, to the top of the communicating
chamber. Record this distance.
2. Loosen the clamps holding the indicating
scale to the communicating chamber.
3. Open the mounting band supplied with the
MGS-314/314D Series and put it around
the communicating chamber, under the
indicating scale.
4. Place the MGS-314/314D Series on
the communicating chamber with the
cooling fins facing 180° away from the
communicating chamber and with the
conduit opening facing down.
Position 'A'
Position 'B'
Position 'B'
Figure 2
MGS-314D SERIES
Figure 1
MGS-314 SERIES
Position 'A'
Toggle
Toggle
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Toggle
4.3 Wiring connection
1. If you are using conduit for the switch wiring
use a conduit seal with a drain or a drip-loop to
prevent condensate from entering the housing.
Condensate can cause electrical shorts.
The switch housing has a ½" NPT-F
connection for the wiring conduit.
2. We recommend attaching an aluminum
condulet, via a 300 Series stainless steel
nipple, to the conduit opening of the switch
housing. This will give you an accessible point
to terminate the control wires. DO NOT USE
any ferromagnetic material such as: carbon
steel, duplex, 400 Series stainless steel or
cast iron.
5. Put the mounting band between the cooling
fins in the channel provided.
6. Loosely tighten the mounting band. Move
the MGS-314/314D Series either up or down
to the desired position, and tighten the band.
7. The switch must be mounted within the
indication range for the magnetic gauge.
The mounting band for the switch should be
a minimum of 1" inside the indication range.
This will insure sufficient float movement to
operate the switch.
8. If more than one switch is used on a
single magnetic gauge, the minimum
recommended distance between mounting
bands is 3".
9. Adjust the position of the indicating scale so
that the distance from the top of the scale
to the top of the communicating chamber
is the same as in Step 1. Tighten the
clamps holding the indicating scale to the
communicating chamber.
