380000 pages

TEDDINGTON APPLIANCE CONTROLS LTD

38000
MINIATURE PRESSURE CONTROL
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Small
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Adjustable Range with Scale
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Dual psi/bar Scales
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SPDT 15A Switch
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TAB Terminals for Easy Fitting
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Alternative Pressure Connections
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Mounting Bracket Provided

Application
These miniaturised controls are designed for use with
compact refrigeration plant where space is at a premium
and precise control is essential. Unlike other similar
controls the 38000 can be adjusted against a calibrated
scale.

Operation

The 38000 is suitable for use in refrigeration plant to

Settings can be adjusted by screwdriver using the black

control evaporator pressure or as a high pressure limit

plastic screw at the top of the case which will increase

switch and may also be used on other systems using air,
water, steam, and domestic heating and pumping
systems.

the setting when rotated ACW. Approximate operating
values are shown on the calibrated scale. A knob pack is
available if adjustment is a regular occurrence.

Physical Description

Installation Considerations

The 38000 range of pressure switches are versatile and
robust, with easily adjustable range settings. The 38000
is made up of three elements, the case, the pressure unit
and the switch. The pressure unit is a seamless brass
bellows (normally used on refrigeration or pressurised
heating system applications). A restrictor can be

Two mounting holes are provided in the body. These are
3.2mm diameter with 16mm centres. A bracket is
supplied which may be used as an alternative.

incorporated into the pressure element to minimise the
effect of pump pulsation's. The switch is a single pole
change over switch that enables wiring for make on rise
or break on rise.

Weight 115g nominal.