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Operation
Doc No: OMMB00301 Revision: 1 – Nov 2019
6.1.3 Manual override (if fitted)
CAUTION
Manual override is for emergency use only. If operated
incorrectly, damage to the valve can occur.
1. If emergency cooling is required then firstly loosen the locknut
on the top of the override (reference Section 7.1, Figure 2, Item
38).
2. Turn adjusting nut (reference Section 7.1, Figure 2, Item 33)
clockwise until indicator pin (reference Section 7.1, Figure 2,
Item 36) has reached ‘manual’ position or desired cooling has
been achieved then tighten locknut. Do not over adjust.
3. In valves with multiple elements, adjust the other overrides
accordingly.
4. When returning to Auto mode, loosen the locknut, turn adjusting
nut anti-clockwise until indicator pin has reached auto position
and adjuster slackens then tighten locknut. Do not over adjust
or damage may occur to the adjuster nut retaining pins.
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