Existing Installations - Danfoss FP975 Installation Manual

3.3 Existing Installation
Ensure that the power to the existing unit is switched off prior to
removal.
SYSTEMS RE-USING EXISTING WALLPLATE
Use the table on page 6 to confi rm wallplate compatibility.
• If the existing wallplate is of the SET pattern, follow instruction
5-9 from the "New Installations" section.
GB
• Should the existing product be a Danfoss Randall MK.9 time
control the instructions below should be followed:
1. Remove and discard the white test point cover fi tted to the top
of the MK.9 wallplate.
2. Slide the small switches on the rear of the module marked MK.9 -
SET to the MK.9 position.
3. Ensure that the two retaining screws on the top of the timeswitch
are fully unscrewed. Firmly press the module onto the wallplate
and tighten the two screws on the top of the module. An additional
fi xing screw to hold the bottom of the unit onto the wallplate is
packed separately and must be fi tted. The screw should be placed
into the recessed hole, beneath the programming fl ap, adjacent
to the COPY button, screwed through the plastic retaining ring
and securely tightened.
4. Follow steps 5-9 from the "New Installations" section.
SYSTEMS HAVING INCOMPATIBLE BACKPLATES
Follow the "New Installations" instructions paying particular attention
to item 3).
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FP975