Stulz CeilAir CW - 4 Maintenance; Periodic General Maintenance

68 OCH0006F08/13/2024
CEILAIR
®
CW & DX IOM
4.0 MAINTENANCE
4.0 MAINTENANCE
4.1 Periodic General Maintenance
Systematic, periodic general maintenance of the CeilAir unit is required for optimum system performance.
General maintenance should include, but not be limited to, the following: Replacing filters and humidifier
cylinders; tightening loose fasteners and electrical connections; checking the condensate line to ensure
it is free of debris; cleaning the interior of the unit; visually inspecting the units’ components; checking belt
tension; checking the level of refrigerant; and ensuring no moisture is in the refrigerant.
Use copies of the OHS Preventive Maintenance Inspection Checklist in Appendix A to record periodic general
maintenance inspections. For assistance, contact STULZ Product Support. Follow all safety instructions
while performing any type of maintenance.
STULZ recommends a general schedule of quarterly preventive maintenance inspections. Some items, such
as filters or coil fins, may need more frequent inspection and maintenance, depending on environmental
conditions.
WARNING
OHS equipment should be serviced and repaired by a journeyman refrigeration mechanic or air
conditioning technician only.
WARNING
If refrigerant gas is released in an enclosed area it will displace oxygen and can suffocate those nearby.
Always ensure adequate ventilation during refrigeration repairs.
Always recover all refrigerant prior to any system repairs. Failure to do so may result in system over
pressurization and rupture. Follow the guidelines in Recovering Refrigerant (see section 3.4.1).
WARNING
Turn off power to the unit at the service disconnect switch unless you are performing tests that require
power. With power and controls energized, the unit could begin operating automatically at any time.
Hazardous voltage will still be present at the evaporator, condenser, heater/reheater and humidifier, even
with the unit turned off at the controller. To isolate the unit for maintenance, turn off power at a non-fused
service switch.
Always disconnect main power prior to performing any service or repairs. To prevent personal injury, stay
clear of rotating components because automatic controls may start them unexpectedly.
WARNING
This unit employs high voltage equipment with rotating components. Exercise extreme care to avoid
accidents and ensure proper operation.