Purpose:

The purpose of this procedure is to document the steps necessary to put the HVAC system for the Main Office into "Summer Mode" in order to maintain a 72°F comfort level.

Scope:

This procedure applies the following equipment located in the Main Office Building: 1) Chiller, 2) Cooling Tower, 3) Condensate Pump HP-2. The HVAC computer system and the changes made to it when this procedure occurs are beyond the scope of this procedure and should be written as a separate procedure.

Materials:

No special materials are required for this procedure, however you do need to check change the HVAC computer settings.

Definitions: HVAC - Heating, Ventilation and Air Conditioning

General Description:

At this time building maintenance person is responsible for the following procedure No supporting documents have been identified at this time.

Procedure:

1. The feed water for the cooling tower is turned on. This happens automatically when the controller variable 'FREEZE' is off. You should check to make sure 'FREEZE' is not in 'ON' in 'OPER' (manual mode). At this time it is good to check that the water fill line drain valves are working properly. This is the small copper pipe with a ball valve and solinoid valve located on the wall near HP-1.

1a. Turn the main disconnect on the cooling tower to "ON".

2. Make sure the cooling tower sump is full.

3. Summerize the S2 and S3 coils

4. Make sure the selector knob on the main motor control for HP-2 is in the "AUTO" position.

5. Turn ON the main power for the chiller: Make sure the selector switch on the chiller control panel is in "AUTO" then press "START". The chiller should start and HP-2 should be running. The Air Conditioning System is now running.

6. Check that the cooling tower float control is functioning properly and that there is not water running out of it and onto the roof.

7. Switch ON the Chemical feed and unplug the Cooling Tower corrosion inhibitor pump. Make sure they are working.

8. After a day check the chemical feed meter. Should read between 500-700 Mohms.

 

Measurement: If any problems arise with any of the equipment mentioned above, or if any settings are changed on any of the equipment, it is to be documented. On or near each piece of equipment, is a sheet of paper where the date, time, problem/action, and initials of the person who made the correction are to be recorded.