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10 - OPERATION AND MAINTENANCE
10.4 - Heating/cooling coil
■ Assembly and disassembly of the coil:
If the coil is located just upstream or downstream of a unit junction, first remove the connection cleats
face, then the retaining screws
D
B
Notes:
■ It is recommended that the condition of the clipped baffle gasket is checked each time the coil is removed. This must be replaced
if necessary.
■ If the coil is taken out, the tube holder gripper must be replaced.
10.4.1 - Cooling coil
■ Maintenance:
- Make sure the water inlet and outlet ducts are in good condition. Check the tightness of the connections and retighten if necessary.
- If the coil is not operating, we recommend bleeding it fully. Blow all the circuits with compressed air to bleed them fully.
Without this additional pressure, significant amounts of fluid may remain, posing a serious risk of damage in the event of freezing
(not covered by the warranty).
- If the fins are damaged, straighten them using a comb suited to the width of the fins.
- For glycol/water mix heat exchangers, check the level of frost protection using a refractometer.
- Cleanliness is a determining factor in the unit's performance, therefore carefully check the condition of the coil, the corrosion level
and for any damage.
- The coils can be cleaned without being disassembled. However, if they are not easily accessible, or if the fouling level is excessive,
the coils are positioned on runners and can be removed for complete cleaning or replacement.
■ Assembly and disassembly of the coil:
- Remove the front panel, then the mounting screw (detail A) to remove the coil.
A
64
C
D
and the tube holders
.
Detail A
B
before removing the front
C
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