|
REFER TO DRAWING M310 FOR CONTROL DIAGRAM ASSOCIATED WITH THESE
<br />GUIDELINES AND SPECIFICATIONS. ALSO REFER TO SPECIFICATION SECTION
<br />15975 FOR ADDITIONAL REQUIREMENTS.
<br />HEATING AND VENTILATING EQUIPMENT ASSOCIATED WITH THIS BOOTH SHALL
<br />BE CONTROLLED BY A PROGRAMMABLE LOGIC CONTROLLER (PLC). CONTROL
<br />DECISIONS SHALL BE MADE AT THE PLC BASED ON INPUT SIGNALS RECEIVED
<br />FROM SENSORS LOCATED IN THE SYSTEM. OUTPUT SIGNALS FROM THE PLC
<br />SHALL ENERGIZE, DEENERGIZE OR MODULATE CONTROLLED DEVICES TO
<br />MAINTAIN PROGRAMMED SET POINTS OR CONDITIONS. ANALOG AND DIGITAL
<br />INPUT AND OUTPUT SIGNALS SHALL BE UTILIZED BY THE CONTROLLER.
<br />DIGITAL INPUT OR OUTPUT SIGNALS SHALL BE USED FOR TWO POSITION
<br />CONTROL MODES. ANALOG INPUT OR OUTPUT SIGNALS SHALL BE USED FOR ALL
<br />OTHER CONTROL MODES.
<br />EQUIPMENT OPERATIONAL STATUS SHALL BE INDICATED AT THE PLC AS
<br />SENSED BY CURRENT RELAYS (XM) AT EACH MOTOR AS INDICATED ON THE
<br />CONTROL DIAGRAM.
<br />RUN LIGHTS (XI) SHALL BE PROVIDED ADJACENT TO THE OPERATIONAL MODE
<br />PUSHBUTTONS AT THE OPERATORS CONTROL PANEL AS SHOWN ON THE CONTROL
<br />DIAGRAM TO INDICATE THE MODE OF OPERATION THE SYSTEM IS OPERATING
<br />IN. RUN LIGHTS SHALL BE RED.
<br />BOOTH EXHAUST FAN (EF)
<br />GENERAL:
<br />EACH VERTICAL PAINT BOOTH HAS TWO EXHAUST FANS (EF). THE CONTROL
<br />DIAGRAM AND THE FOLLOWING SEQUENCE DESCRIBE OPERATIONS FOR ONLY ONE
<br />FAN SYSTEM, BUT ARE TYPICAL FOR BOTH UNLESS OTHERWISE NOTED.
<br />THE EF SHALL BE EITHER MANUALLY OR AUTOMATICALLY STARTED THROUGH
<br />THE H—O—A SWITCH (HS-2XX01) LOCATED AT THE MOTOR CONTROL CENTER.
<br />MANUAL ACTIVATION SHALL OCCUR IN THE HAND POSITION. AUTOMATIC
<br />ACTIVATION SHALL OCCUR THROUGH THE PLC WHEN THE H—O—A SWITCH IS
<br />POSITIONED IN THE AUTO POSITION. THE SWITCH SHOULD NORMALLY BE
<br />POSITIONED IN THE AUTO POSITION.
<br />WHEN THE EF IS EITHER MANUALLY OR AUTOMATICALLY STARTED, THE
<br />SOLENOID VALVES ON THE PLANT COMPRESSED AIR LINES SERVING THE FANS
<br />AUTOMATIC DAMPER (SnV-2XX01) AND THE BOOTH SPRAY GUN (SnV—OXXO1 AND
<br />OXXO2) SHALL BE ENERGIZED. WHEN ENERGIZED, THESE VALVES SHALL ALLOW
<br />90 PSIG AIR TO THE AUTOMATIC AIR DAMPER AND THE BOOTH DISTRIBUTION
<br />SYSTEM SERVING THE SPRAY GUN AIR OUTLETS. THE 90 PSIG AIR SHALL
<br />OPEN THE NORMALLY CLOSED (N.C.) AUTOMATIC AIR DAMPER. WHEN THE EF
<br />IS DEACTIVATED FOR ANY REASON THE SOLENOID VALVES SHALL BE
<br />DEENERGIZED, ALLOWING PLANT AIR TO BLEED OFF THE SYSTEMS. THIS
<br />SHALL DEACTIVATE THE SPRAY GUNS AND ALLOW THE AUTOMATIC DAMPER TO
<br />RETURN TO ITS FAIL SAFE (NORMAL) POSITION.
<br />AIR FLOW CONTROL:
<br />THE EF VARIABLE FREQUENCY DRIVE (VFD) SHALL CONTROL EXHAUST SYSTEM
<br />AIR FLOW BASED ON PREDETERMINED AIR FLOW SETTINGS (SEE DRAWING M3)
<br />IN RESPONSE TO PLC COMMANDS. THE CONTROL SYSTEM INSTALLER AND THE
<br />HVAC BALANCING CONTRACTOR SHALL WORK TOGETHER TO ESTABLISH THESE
<br />SET POINTS AS REQUIRED TO OBTAIN THE VARIOUS AIR FLOWS DESCRIBED
<br />BELOW UNDER OPERATIONAL MODES A, B, AND C. THESE SET POINTS SHALL
<br />BE DISPLAYED AND SHALL BE ADJUSTABLE FROM THE PLC STATION. ACCESS
<br />TO CHANGE THESE SET POINTS SHALL BE PASSWORD PROTECTED. CONTROL OF
<br />EACH OF THE THREE MODES SHALL BE AT THE LOCAL CONTROL STATION AND
<br />SHALL BE REMOTELY INDICATED AT THE PLC STATION.
<br />ON A CHANGE IN AIR FLOW (OPERATIONAL MODE CHANGE), THE PLC SHALL
<br />RAMP —UP THE FAN VARIABLE FREQUENCY DRIVE. THE RAMP —UP DURATION FROM
<br />NO —FLOW TO FULL —FLOW SHALL BE IN EQUAL INCREMENTS FOR A 90 SECOND
<br />TIME PERIOD (ADJUSTABLE). THE SAME STEPS ESTABLISHED FOR THE NO —
<br />FLOW TO FULL —FLOW RAMP —UP SHALL BE USED FOR RAMP —UP FROM ANY AIR
<br />FLOW MODE TO A HIGHER AIR FLOW MODE.
<br />WHEN THE SYSTEM IS OPERATING IN THE MANUAL MODE OF CONTROL (HAND
<br />POSITION AT THE H—O—A SWITCH), THE FAN SHALL NOT BE UNDER CONTROL
<br />OF THE PLC AND AIR FLOW SHALL FAIL TO THE FULL FLOW (OPERATIONAL
<br />MODE B) SETTING.
<br />FAN SAFETY CONTROLS:
<br />WHEN THE EF IS OPERATING IN EITHER THE MANUAL OR AUTOMATIC MODE AND
<br />SMOKE IS DETECTED BY THE DUCT SMOKE DETECTOR (AS-2XX01), THE
<br />EXHAUST FAN SHALL BE DEENERGIZED AND CONTROLLED COMPONENTS SHALL
<br />RETURN TO THEIR FAIL SAFE POSITIONS. SMOKE DETECTOR ALARMS, AS WITH
<br />OTHER SUMMARY ALARMS, SHALL BE REGISTERED AT THE EVERETT DISPATCH
<br />CENTER THROUGH THE EXISTING FACILITY ENERGY MANAGEMENT SYSTEM
<br />STATION. SUMMARY ALARMS SHALL BE ENTERED IN ONE OF THE LOCAL 40-51
<br />'EXCEL' PANELS FOR FORWARDING TO THE EXISTING FACILITY ENERGY
<br />MANAGEMENT SYSTEM. UPON RECEIPT OF A MALFUNCTION, DISPATCH SHALL
<br />NOTIFY THE COGNIZANT MAINTENANCE SUPERVISOR, WHO WILL, IN TURN,
<br />SEND THE APPROPRIATE MAINTENANCE PERSON WHO WILL DETERMINE THE
<br />EXACT NATURE OF THE SYSTEM MALFUNCTION AT THE 40-51 PLC STATION.
<br />INDIVIDUAL SYSTEM STATUS AND ALARMS SHALL BE REGISTERED AND
<br />DISPLAYED AT THE PLC STATION.
<br />WHEN THE EXHAUST FAN IS DEENERGIZED FOR ANY REASON, THE ASSOCIATED
<br />BOOTH SUPPLY FAN (SF) SHALL BE DEENERGIZED AND THEIR ASSOCIATED
<br />CONTROL COMPONENTS SHALL RETURN TO THEIR FAIL SAFE POSITIONS.
<br />IF EXHAUST AIR FLOW IS NOT PROVEN BY PRESSURE DIFFERENTIAL
<br />TRANSMITTER (PdT-2XX01), THE EXHAUST FAN MOTOR SHALL BE DEENERGIZED
<br />WHICH SHALL DEENERGIZE THE SOLENOID VALVES SnV—OXX01 AND OXX02) SERVING THE PAINT BOOTH SPRAY GUNS AND (SnV-2XX01) SERVING THE
<br />N.C.—AAD. THIS ALARM CONDITION SHALL BE INDICATED AT THE EXISTING
<br />FACILITY ENERGY MANAGEMENT SYSTEM.
<br />FILTER BANK:
<br />PRESSURE DROP ACROSS THE FILTER BANK SHALL BE MONITORED AT THE
<br />LOCAL PRESSURE DIFFERENTIAL INDICATOR TRANSMITTER (PdIT-2XXO1)
<br />LOCATED ON THE BOOTH CONTROL PANEL. WHEN THE DIFFERENTIAL PRESSURE
<br />ACROSS THE FILTERS EXCEEDS THE FILTER CHANGE OUT SET POINT, THIS
<br />INFORMATION SHALL BE REGISTERED AT THE EVERETT DISPATCH CENTER
<br />THROUGH THE FACILITY ENERGY MANAGEMENT SYSTEM STATION. SUMMARY
<br />ALARMS SHALL BE ENTERED IN ONE OF THE LOCAL 40-51 'EXCEL' PANELS
<br />FOR FORWARDING TO THE FACILITY ENERGY MANAGEMENT SYSTEM. UPON
<br />RECEIPT OF A MALFUNCTION, DISPATCH SHALL NOTIFY THE COGNIZANT
<br />MAINTENANCE SUPERVISOR, WHO WILL, IN TURN, SEND THE APPROPRIATE
<br />MAINTENANCE PERSON WHO WILL DETERMINE THE EXACT NATURE OF THE
<br />SYSTEM MALFUNCTION AT THE 40-51 PLC STATION. INDIVIDUAL SYSTEM
<br />STATUS AND ALARMS SHALL BE REGISTERED AND DISPLAYED AT THE PLC
<br />STATION.
<br />ACCESS TO CHANGE THE FILTER DIFFERENTIAL PRESSURE DESIGN SET POINT
<br />SHALL BE PASSWORD PROTECTED SO AS TO BE ACCESSIBLE TO HVAC
<br />MAINTENANCE PERSONNEL ONLY.
<br />BOOTH SUPPLY FAN (S
<br />EACH VERTICAL PAINT BOOTH HAS TWO SETS OF TWO SUPPLY FANS (SF)
<br />EACH. THE CONTROL DIAGRAM AND THE FOLLOWING SEQUENCE DESCRIBE
<br />OPERATIONS FOR ONLY ONE FAN SYSTEM BUT, ARE TYPICAL FOR BOTH UNLESS
<br />OTHERWISE NOTED.
<br />THE SF SHALL BE EITHER MANUALLY OR AUTOMATICALLY STARTED THROUGH
<br />THE H—O—A SWITCH (HS-5XX01) LOCATED AT THE MOTOR CONTROL CENTER.
<br />MANUAL ACTIVATION SHALL OCCUR IN THE HAND POSITION. AUTOMATIC
<br />ACTIVATION SHALL OCCUR THROUGH THE PLC WHEN THE H—O—A SWITCH IS
<br />POSITIONED IN THE AUTO POSITION. THE SWITCH SHOULD NORMALLY BE
<br />POSITIONED IN THE AUTO POSITION.
<br />WHEN THE SF IS EITHER MANUALLY OR AUTOMATICALLY STARTED, THE 3—WAY
<br />SOLENOID VALVES ON THE PLANT COMPRESSED AIR LINE SERVING THE FAN'S
<br />AUTOMATIC DAMPER (SnV-5XX01), THE PREHEAT COIL'S FACE & BY—PASS
<br />DAMPER (SnV-3XX02), AND ON THE INSTRUMENT AIR LINE SERVING THE
<br />VARIOUS SYSTEM CONTROL VALVES (SnV-3XX01) SHALL BE ENERGIZED. WHEN
<br />ENERGIZED, THESE VALVES SHALL ALLOW 90 PSIG AIR TO THE AUTOMATIC
<br />AIR DAMPER AND THE I/P SERVING THE FACE & BY—PASS DAMPER (I/P-
<br />3XX03) AND 20 PSIG INSTRUMENT AIR TO THE I/P SERVING EACH CONTROL
<br />VALVE(I/P-3XX01 , 3XX02 AND 7XX01). THE 90 PSIG AIR SHALL OPEN THE
<br />NORMALLY CLOSED (N.C.) AUTOMATIC AIR DAMPER. WHEN THE SF IS
<br />DEACTIVATED FOR ANY REASON THE SOLENOID VALVES SHALL BE
<br />DEENERGIZED, ALLOWING PLANT AND INSTRUMENT AIR TO BLEED OFF THE
<br />SYSTEMS. THIS SHALL ALLOW THE AUTOMATIC AIR DAMPER, FACE & BY—PASS
<br />DAMPER, AND THE CONTROL VALVES TO RETURN TO THEIR FAIL SAFE
<br />(NORMAL) POSITIONS.
<br />AIR FLOW CONTROL:
<br />THE SF VARIABLE FREQUENCY DRIVE (VFD) SHALL CONTROL SUPPLY SYSTEM
<br />AIR FLOW BASED ON PREDETERMINED AIR FLOW SETTINGS (SEE DRAWING M3)
<br />IN RESPONSE TO PLC COMMANDS. THE CONTROL SYSTEM INSTALLER AND THE
<br />HVAC BALANCING CONTRACTOR SHALL WORK TOGETHER TO ESTABLISH THESE
<br />SET POINTS AS REQUIRED TO OBTAIN THE VARIOUS AIR FLOWS DESCRIBED
<br />BELOW UNDER OPERATIONAL MODES A, B, AND C. THESE SET POINTS SHALL
<br />BE DISPLAYED AND SHALL BE ADJUSTABLE FROM THE PLC STATION. ACCESS
<br />TO CHANGE THESE SET POINTS SHALL BE PASSWORD PROTECTED. CONTROL OF
<br />EACH OF THE THREE MODES SHALL BE AT THE LOCAL CONTROL STATION AND
<br />SHALL BE REMOTELY INDICATED AT THE PLC STATION. THE AIR FLOW TO
<br />THE BOOTH SHALL BE REDUCED BELOW THE PREDETERMINED QUANTITIES BY
<br />THE PLC UPON INDICATION OF EXCESSIVE POSITIVE STATIC PRESSURE
<br />INSIDE THE BOOTH AS INDICATED BY THE DIFFERENTIAL PRESSURE
<br />INDICATING TRANSMITTER (PdIT-5XX02) INSTALLED ACROSS THE VERTICAL
<br />PAINT BOOTH WALL.
<br />ON A CHANGE IN AIR FLOW (OPERATINAL MODE CHANGE), THE PLC SHALL
<br />RAMP —UP THE FAN VARIABLE FREQUENCY DRIVE. THE RAMP —UP DURATION FROM
<br />NO —FLOW TO FULL —FLOW SHALL BE IN EQUAL INCREMENTS FOR A 90 SECOND
<br />TIME PERIOD (ADJUSTABLE). THE SAME STEPS ESTABLISHED FOR THE NO —
<br />FLOW TO FULL —FLOW RAMP —UP SHALL BE USED FOR RAMP —UP FROM ANY AIR
<br />FLOW MODE TO A HIGHER AIR FLOW MODE.
<br />WHEN THE SYSTEM IS OPERATING IN THE MANUAL MODE OF OPERATION (HAND
<br />POSITION AT THE H—O—A SWITCH), THE FAN SHALL NOT BE UNDER CONTROL
<br />OF THE PLC AND AIR FLOW SHALL FAIL TO THE FULL FLOW (OPERATIONAL
<br />MODE B) SETTING.
<br />PREHEAT CONTROL:
<br />STEAM FLOW TO THE PREHEAT COIL SHALL BE CONTROLLED BY NORMALLY
<br />CLOSED (N.C.), TWO —POSITION TEMPERATURE CONTROL VALVE (TCV-3XX01).
<br />THE PLC SHALL OPEN THE TCV WHEN THE OUTSIDE AIR TEMPERATURE DROPS
<br />BELOW THE DESIGN SETPOINT TEMPERATURE AS SENSED BY OUTSIDE AIR
<br />TEMPERATURE TRANSMITTER (TT-3XX03). THE PLC SHALL MODULATE THE
<br />PREHEAT COIL'S INTEGRAL FACE & BY—PASS DAMPERS TO MAINTAIN PREHEAT
<br />COIL LEAVING AIR DESIGN SET POINT TEMPERATURE AS SENSED BY DUCT
<br />MOUNTED SUPPLY AIR TEMPERATURE TRANSMITTER (TT-4XX01). THE INTEGRAL
<br />FACE & BY—PASS DAMPER FUNCTION SHALL BE ACTIVE IN THE CURE MODE
<br />ONLY.
<br />WHEN TT-3XXO3 SENSES A OUTSIDE AIR TEMPERATURE OF 36 DEGREE F AND
<br />THE SYSTEM IS IN AN OPERATIONAL MODE OTHER THAN THE CURE MODE, THE
<br />TCV-3XXO1 SHALL FULLY OPEN AND THE COIL'S INTEGRAL FACE AND BY—PASS
<br />DAMPERS SHALL GO TO THE BY—PASS POSITION. WHEN THE OUTSIDE AIR
<br />TEMPERATURE RISES ABOVE 36 DEGREES F THE TCV SHALL CLOSE.
<br />ACCESS TO CHANGE THE PREHEAT CONTROL SET POINTS SHALL BE PASSWORD
<br />PROTECTED SO AS TO BE ACCESSIBLE TO HVAC MAINTENANCE PERSONNEL
<br />ONLY.
<br />HEATING CONTROL (FIRST STAGE):
<br />STEAM FLOW RATE FOR THE FIRST STAGE HEATING SHALL BE CONTROLLED BY
<br />NORMALLY CLOSED (N.C.) TEMPERATURE CONTROL VALVE (TCV-3XX02). THE
<br />PLC SHALL MODULATE THE TCV TO MAINTAIN THE SPACE DESIGN SET POINT
<br />TEMPERATURE AS SENSED BY SPACE TEMPERATURE TRANSMITTER (TT-3XX01).
<br />ACCESS TO CHANGE THE HEATING CONTROL (FIRST STAGE) SET POINTS SHALL
<br />BE PASSWORD PROTECTED SO AS TO BE ACCESSIBLE TO HVAC MAINTENANCE
<br />PERSONNEL ONLY.
<br />HEATING CONTROL (SECOND STAGE):
<br />STEAM FLOW RATE FOR THE SECOND STAGE HEATING SHALL BE CONTROLLED BY
<br />NORMALLY CLOSED (N.C.) TEMPERATURE CONTROL VALVE (TCV-3XX03). THE
<br />PLC SHALL MODULATE THE TCV TO MAINTAIN THE SPACE DESIGN SET POINT
<br />TEMPERATURE AS SENSED BY SPACE TEMPERATURE TRANSMITTER (TT-3XX01).
<br />THE HIGH TEMPERATURE TRANSMITTER (TT-3XX02) LOCATED DOWNSTREAM OF
<br />THE HEATING COIL SHALL PREVENT OVER HEATING OF THE SUPPLY AIR
<br />STREAM. WHEN EXCESSIVE TEMPERATURE IS SENSED, THE PLC SHALL REDUCE
<br />STEAM FLOW TO THE HEATING COIL AS REQUIRED TO MAINTAIN TT-3XX02
<br />HIGH TEMPERATURE SET POINT. ONCE THE SPACE TRANSMITTER DEMAND DROPS
<br />BELOW THE DUCT TRANSMITTER, THE SPACE TRANSMITTER SIGNAL SHALL BE
<br />USED BY THE PLC TO RESUME CONTROL.
<br />ACCESS TO CHANGE THE HEATING CONTROL (SECOND STAGE) SET POINTS
<br />SHALL BE PASSWORD PROTECTED SO AS TO BE ACCESSIBLE TO HVAC
<br />MAINTENANCE PERSONNEL ONLY.
<br />CURE HUMIDIFICATION CONTROL:
<br />STEAM FLOW RATE TO THE HUMIDIFIER SHALL BE CONTROLLED BY NORMALLY
<br />CLOSED (N.C.) STEAM CONTROL VALVE (MCV-7XX01). THE PLC SHALL
<br />MODULATE THE MCV TO MAINTAIN THE SPACE DESIGN SET POINT HUMIDITY AS
<br />SENSED BY SPACE HUMIDITY TRANSMITTER (MT-7XX01).
<br />THE HIGH HUMIDITY TRANSMITTER (MT-7XXO2) LOCATED DOWNSTREAM OF THE
<br />HUMIDIFIER SHALL PREVENT OVER HUMIDIFICATION OF THE SUPPLY AIR
<br />STREAM. WHEN EXCESSIVE HUMIDITY IS SENSED, THE PLC SHALL REDUCE
<br />STEAM FLOW TO THE HUMIDIFIER AS REQUIRED TO MAINTAIN MT-7XXO2 HIGH
<br />HUMIDITY SET POINT. ONCE THE SPACE TRANSMITTER DEMAND DROPS BELOW
<br />THE DUCT TRANSMITTER, THE SPACE TRANSMITTER SIGNAL SHALL BE USED BY
<br />THE PLC TO RESUME CONTROL.
<br />PASSWORD PROTECTED SO AS TO BE ACCESSIBLE TO HVAC MAINTENANCE
<br />PERSONNEL ONLY.
<br />FAN SAFETY CONTROLS:
<br />WHEN THE SF IS OPERATING IN EITHER THE MANUAL OR AUTOMATIC MODE AND
<br />SMOKE IS DETECTED BY THE DUCT SMOKE DETECTOR (AS-5XX01), THE SUPPLY
<br />FAN SHALL BE DEENERGIZED AND ASSOCIATED CONTROL COMPONENTS SHALL
<br />RETURN TO THEIR FAIL SAFE POSITIONS. SMOKE DETECTOR ALARMS, AS WITH
<br />OTHER SUMMARY ALARMS, SHALL BE REGISTERED AT THE EVERETT DISPATCH
<br />CENTER THROUGH THE EXISTING FACILITY ENERGY MANAGEMENT SYSTEM
<br />STATION. SUMMARY ALARMS SHALL BE ENTERED IN ONE OF THE LOCAL 40-51
<br />'EXCEL' PANELS FOR FORWARDING TO THE EXISTING FACILITY ENERGY
<br />MANAGEMENT SYSTEM. UPON RECEIPT OF A MALFUNCTION, DISPATCH SHALL
<br />NOTIFY THE COGNIZANT MAINTENANCE SUPERVISOR, WHO WILL, IN TURN,
<br />SEND THE APPROPRIATE MAINTENANCE PERSON WHO WILL DETERMINE THE
<br />EXACT NATURE OF THE SYSTEM MALFUNCTION AT THE 40-51 PLC STATION.
<br />INDIVIDUAL SYSTEM STATUS AND ALARMS SHALL BE REGISTERED AND
<br />DISPLAYED AT THE PLC STATION.
<br />WHEN THE LOW LIMIT TEMPERATURE SENSOR (TSL-5XX01) SENSES A LEAVING
<br />HEATING COIL TEMPERATURE OF 40 DEGREES F, THE SUPPLY FAN SHALL BE
<br />DEENERGIZED AND CONTROLLED COMPONENTS SHALL RETURN TO THEIR FAIL
<br />SAFE (NORMAL) POSITIONS. THE PLC SHALL INDICATE SYSTEM SHUTDOWN AT
<br />THE EXISTING FACILITY ENERGY MANAGEMENT SYSTEM.
<br />WHEN THE SUPPLY FAN IS DEENERGIZED FOR ANY REASON THE ASSOCIATED
<br />BOOTH EXHAUST FAN (EF) SHALL BE DEENERGIZED AND THEIR CONTROLLED
<br />COMPONENTS SHALL RETURN TO THEIR FAIL SAFE (NORMAL) POSITIONS.
<br />IF SUPPLY AIR FLOW IS NOT PROVEN BY PRESSURE DIFFERENTIAL
<br />TRANSMITTER (PdT-5XX01), THE SUPPLY FAN MOTOR SHALL BE DEENERGIZED
<br />WHICH SHALL DEENERGIZE THE ASSOCIATED EXHAUST FAN AND THE SOLENOID
<br />VALVE (SnV—OXXO1) SERVING THE PAINT BOOTH SPRAY GUN. THIS CONDITION
<br />SHALL BE INDICATED AT THE EXISTING FACILITY ENERGY MANAGEMENT
<br />SYSTEM.
<br />FILTER BANK:
<br />PRESSURE DROP ACROSS THE FILTER BANK SHALL BE MONITORED AT THE
<br />LOCAL PRESSURE DIFFERENTIAL INDICATOR TRANSMITTER (PdIT-5XX01)
<br />LOCATED ON THE BOOTH CONTROL PANEL. WHEN THE DIFFERENTIAL PRESSURE
<br />ACROSS THE FILTERS EXCEEDS THE FILTER CHANGE OUT SET POINT, THIS
<br />INFORMATION SHALL BE REGISTERED AT THE EVERETT DISPATCH CENTER
<br />THROUGH THE FACILITY ENERGY MANAGEMENT SYSTEM STATION. SUMMARY
<br />ALARMS SHALL BE ENTERED IN ONE OF THE LOCAL 40-51 'EXCEL' PANELS
<br />FOR FORWARDING TO THE FACILITY ENERGY MANAGEMENT SYSTEM. UPON
<br />RECEIPT OF A MALFUNCTION, DISPATCH SHALL NOTIFY THE COGNIZANT
<br />MAINTENANCE SUPERVISOR, WHO WILL, IN TURN, SEND THE APPROPRIATE
<br />MAINTENANCE PERSON WHO WILL DETERMINE THE EXACT NATURE OF THE
<br />SYSTEM MALFUNCTION AT THE 40-51 PLC STATION. INDIVIDUAL SYSTEM
<br />STATUS AND ALARMS SHALL BE REGISTERED AND DISPLAYED AT THE PLC
<br />STATI 0 N .
<br />ACCESS TO CHANGE THE FILTER DIFFERENTIAL PRESSURE DESIGN SET POINT
<br />SHALL BE PASSWORD PROTECTED SO AS TO BE ACCESSIBLE TO HVAC
<br />MAINTENANCE PERSONNEL ONLY.
<br />BOOTH HEAT RECOVERY WHEEL (HRW) HRW-3 & HRW-4
<br />GENERAL:
<br />EACH VERTICAL PAINT BOOTH HAS TWO HEAT RECOVERY WHEELS (HRW). THE
<br />CONTROL DIAGRAM AND THE FOLLOWING SEQUENCE DESCRIBE OPERATIONS FOR
<br />ONLY ONE HEAT RECOVERY SYSTEM, BUT ARE TYPICAL FOR BOTH UNLESS
<br />OTHERWISE NOTED.
<br />THE HRW SHALL BE EITHER MANUALLY OR AUTOMATICALLY STARTED THROUGH
<br />THE H—O—A SWITCH (HS-4XX01) LOCATED AT THE MOTOR CONTROL CENTER.
<br />MANUAL ACTIVATION SHALL OCCUR IN THE HAND POSITION. AUTOMATIC
<br />ACTIVATION SHALL OCCUR THROUGH THE PLC WHEN THE H—O—A SWITCH IS
<br />POSITIONED IN THE AUTO POSITION. THE SWITCH SHOULD NORMALLY BE
<br />POSITIONED IN THE AUTO POSITION.
<br />WHEEL SPEED CONTROL:
<br />THE HRW VARIABLE FREQUENCY DRIVE (VFD) SHALL CONTROL SPEED OF THE
<br />HRW ROTATION IN RESPONSE TO THE PLC COMMANDS. THE PLC SHALL MONITOR
<br />HRW INLET AND OUTLET TEMPERATURES OF BOTH THE SUPPLY AND EXHAUST
<br />AIR STREAMS TO DETERMINE THE MOST EFFICIENT WHEEL SPEED. THE
<br />CONTROL SYSTEM INSTALLER/PROGRAMMER SHALL COORDINATE WITH THE HRW
<br />MANUFACTURER TO VERIFY THAT THE FOLLOWING CONTROL REQUIREMENTS
<br />APPLY TO THE UNIT ACTUALLY PURCHASED.
<br />THE SUPPLY AIR TEMPERATURE TRANSMITTER (TT-4XX02) LOCATED DIRECTLY
<br />DOWNSTREAM OF THE HRW SHALL BE USED BY THE PLC TO CONTROL THE HRW
<br />WHEEL SPEED BETWEEN 20 RPM MAXIMUM AND 1/4 RPM MINIMUM TO MAINTAIN
<br />THE TEMPERATURE TRANSMITTER SET POINT.
<br />THE SUMMER/WINTER CHANGE OVER TEMPERATURE TRANSMITTERS (TT-4XXO1 &
<br />4XX03) LOCATED IN THE OUTDOOR AIR STREAM (SUPPLY SIDE UPSTREAM OF
<br />HRW) AND THE RETURN AIR STREAM (EXHAUST SIDE UPSTREAM OF HRW) SHALL
<br />BE USED BY THE PLC TO SWITCH TO THE SUMMER OR WINTER MODE OF
<br />OPERATION. DURING THE SUMMER MODE OF OPERATION THE HRW WHEEL SPEED
<br />SHALL BE REDUCED TO ITS MINIMUM SPEED TO KEEP FROM TRANSFERRING
<br />UNWANTED HEAT FROM THE EXHAUST AIR STREAM TO THE SUPPLY AIR STREAM.
<br />THE SWITCHOVER SHALL BE OVERRIDDEN IN THE CURE MODE, AND CONTROL
<br />SHALL REVERT TO MAXIMIZING HEAT RECOVERY EFFICIENCY.
<br />WHEN THE HRW IS OPERATING IN THE MANUAL MODE OF CONTROL (HAND
<br />POSITION AT THE H—O—A SWITCH), THE HRW SHALL NOT BE UNDER CONTROL
<br />OF THE PLC AND WHEEL ROTATION SHALL FAIL TO ITS MAXIMUM RPM
<br />SETTING.
<br />Ur LfCHI IUINHL IVIUUL /A — VVIINIj rfCGr/1fV1I IUIN
<br />WHEN OPERATIONAL MODE A PUSH BUTTON (HS—OXX02) IS SELECTED AND THE
<br />HOA'S ARE IN THE AUTO POSITIONS, THE PLC SHALL AUTOMATICALLY
<br />ACTIVATE THE BOOTH EXHAUST FANS (EF), SUPPLY FANS (SF),
<br />SEQUENCE OF OPERATION FOR EACH OF THE
<br />SELECTED SYSTEMS SHALL BE AS PREVIOUSLY DESCRIBED WITH THE
<br />FOLLOWING MODE SPECIFIC REQUIREMENTS.BOOTH EXHAUST FANS (EF) SHALL
<br />OPERATE IN THE 25,000 CFM (EACH) SETTING.BOOTH SUPPLY FANS (SF)
<br />SHALL OPERATE IN THE 25,000 CFM (PER SET OF 2) SETTING. TWO STAGE
<br />HEATING SHALL BE ACTIVATED. PREHEAT HEATING SHALL NORMALLY BE
<br />DEACTIVATED (UNLESS OUTDOOR TEMPERATURE IS 36 DEGREES F OR LOWER).
<br />HUMIDIFICATION CONTROL SHALL BE DEACTIVATED.
<br />OPERATIONAL MODE B — PAINTING
<br />WHEN OPERATIONAL MODE B PUSH BUTTON (HS—OXX03) IS SELECTED AND THE
<br />PROFESSIONAL STAMP & SIGNATURE
<br />APPLIES TO WORK WITHIN THE CLOUDED
<br />REVISION AREAS ONLY AS INDICATED
<br />pfKENGINEERS
<br />Seattle H Spokane H Baltimore
<br />HOA'S ARE IN THE AUTO POSITIONS, THE PLC SHALL AUTOMATICALLY
<br />ACTIVATE THE BOOTH EXHAUST FANS (EF), SUPPLY FANS (SF),
<br />SEQUENCE OF OPERATION FOR EACH OF THE SELECTED SYSTEMS SHALL BE AS
<br />PREVIOUSLY DESCRIBED WITH THE FOLLOWING MODE SPECIFIC REQUIREMENTS.
<br />BOOTH EXHAUST FANS (EF) SHALL OPERATE IN THE 64,000 CFM (EACH)
<br />SETTING.
<br />BOOTH SUPPLY FANS (SF) SHALL OPERATE IN THE 64,000 CFM (PER SET OF
<br />2) SETTING. TWO STAGE HEATING SHALL BE ACTIVATED. PREHEAT HEATING
<br />SHALL NORMALLY BE DEACTIVATED (UNLESS OUTDOOR TEMPERATURE IS 36
<br />DEGREES F OR LOWER). HUMIDIFICATION CONTROL SHALL BE DEACTIVATED.
<br />OPERATIONAL MODE C — CURE
<br />WHEN OPERATIONAL MODE C PUSH BUTTON (HS—OXX04) IS SELECTED AND THE
<br />HOA'S ARE IN THE AUTO POSITIONS, THE PLC SHALL AUTOMATICALLY
<br />ACTIVATE THE BOOTH EXHAUST FANS (EF), SUPPLY FANS (SF)
<br />SEQUENCE OF OPERATION FOR EACH OF THE SELECTED SYSTEMS SHALL BE AS
<br />PREVIOUSLY DESCRIBED WITH THE FOLLOWING MODE —SPECIFIC REQUIREMENTS.
<br />THERE ARE FOUR PHASES WITHIN THIS OPERATING MODE: PURGE, RAMP —UP, STEADY
<br />STATE, AND RAMP —DOWN. THE PHASES ARE PROGRESSIVE BASED UPON AN
<br />ADJUSTABLE TIME SCHEDULE. IN ALL PHASES OF MODE C, THE PREHEAT
<br />FUNCTION SHALL BE ACTIVE. THE PREHEAT FUNCTION SHALL PREVENT THE
<br />TEMPERATURE OF THE SUPPLY AIR ENTERING THE HEAT WHEEL FROM BEING
<br />LESS THAN 32 DEGREES F.
<br />DUE TO THE EXPANSION OF THE SUPPLY AIR FLOW RESULTING FROM HEATING
<br />AND HUMIDIFICATION, THE DIFFERENTIAL PRESSURE INDICATING
<br />TRANSMITTER (PdIT-5XX02) MOUNTED ACROSS THE BOOTH WALL SHALL
<br />MONITOR THE RELATIVE PRESSURIZATION OF THE BOOTH. THE PLC SHALL
<br />CONTROL THE PRESSURIZATION UTILIZING THE SUPPLY FAN VFD'S.
<br />PURGE PHASE: BEFORE ANY TEMPERATURE OR HUMIDITY RAMP —UP OCCUR, THE
<br />BOOTH SHALL BE VENTILATED FOR 10 MINUTES.
<br />RAMP —UP PHASE: THE RAMP —UP PHASE CONSISTS OF A DRY BULB TEMPERATURE
<br />RAMP —UP FOLLOWED BY A HUMIDITY RAMP —UP. FOR THE RAMP —UP PHASE, THE
<br />FOLLOWING REQUIREMENTS APPLY.
<br />BOOTH EXHAUST FANS (EF) SHALL OPERATE IN THE 25,000 CFM (EACH)
<br />SETTING.
<br />BOOTH SUPPLY FANS (SF) SHALL OPERATE IN THE 25,000 CFM (PER SET OF
<br />2) SETTING. BOTH STAGES OF HEATING CONTROL SHALL BE ACTIVATED.
<br />PREHEAT CONTROL SHALL BE ACTIVATED. DURING THE DRY BULB TEMPERATURE
<br />RAMP —UP, THE TEMPERATURE OF THE BOOTH SHALL BE ELEVATED FROM THE
<br />MODE B TEMPERATURE TO 120 DEGREES F OVER A PERIOD OF 40 MINUTES. AT
<br />THE END OF THE DRY BULB RAMP —UP, THE HUMIDIFICATION CONTROL SHALL
<br />BE ACTIVATED. DURING THE HUMIDIFICATION RAMP —UP PERIOD, THE BOOTH
<br />HUMIDITY SHALL BE INCREASED FROM THE UNCONTROLLED LEVEL TO 40
<br />PERCENT IN A PERIOD OF 30 MINUTES.
<br />STEADY STATE PHASE: AFTER THE RAMP —UP PERIOD IS OVER AND SPACE CURE
<br />TEMPERATURE AND HUMIDITY LEVELS STABILIZE, THE PLC SHALL CONTROL
<br />THE OPERATION OF ALL SUPPLY AND EXHAUST SYSTEM COMPONENTS TO
<br />MAINTAIN THE CURE MODE TEMPERATURE AND HUMIDITY IN THE BOOTH FOR
<br />THE SELECTED PERIOD OF TIME.
<br />RAMP —DOWN PHASE: AFTER THE END OF THE CURE HOLD PERIOD, THE RAMP —
<br />DOWN PHASE SHALL BE INITIATED. DURING THE RAMP —DOWN PHASE,
<br />HUMIDIFICATION SHALL BE DEACTIVATED FOR A PERIOD OF 30 MINUTES WITH
<br />THE DRY BULB TEMPERATURE BEING MAINTAINED FOR THAT PERIOD. AT THE
<br />END OF 30 MINUTES OF HUMIDIFIER DEACTIVATION, THE DRY BULB
<br />TEMPERATURE SHALL BE REDUCED FROM 120 DEGREES F TO THE INDOOR
<br />AMBIENT TEMPERATURE OVER A PERIOD OF 40 MINUTES.
<br />VERTICAL PAINT BOOTH LID AND DOOR CONTROL
<br />THE BOOTH CLOSURE LID AND HORIZONTAL SLIDING DOOR CONTROLS WILL BE
<br />PROVIDED BY THE VERTICAL PAINT BOOTH SUPPLIER. OPERATIONAL MODES A,
<br />B AND C SHALL NOT BE ALLOWED TO OPERATE UNTIL A SIGNAL IS RECEIVED
<br />FROM THE WING PREPARATION AND PAINT CONTROL PLC, SUPPLIED BY THE
<br />BOOTH VENDOR, INDICATING THE LID AND SLIDING DOORS ARE COMPLETELY
<br />CLOSED.
<br />THE PREVIOUSLY MENTIONED WING PREPARATION AND PAINT CONTROL PLC
<br />WILL NOT ALLOW WING PREPARATION ACTIVITIES OR PAINTING ACTIVITIES
<br />TO BEGIN UNTIL THE LID AND SLIDING DOORS ARE COMPLETELY CLOSED AND
<br />THE APPROPRIATE OPERATIONAL MODE IS PROVEN. PROVIDE A SIGNAL TO THE
<br />WING PREP AND PAINT CONTROL PLC INDICATING THE SYSTEMS ARE
<br />OPERATING IN THE APPROPRIATE OPERATIONAL MODE.
<br />THE CONTROL SYSTEM SUPPLIER AND THE VERTICAL PAINT BOOTH SUPPLIER
<br />SHALL WORK TOGETHER TO COORDINATE INTERFACE REQUIREMENTS BETWEEN
<br />THE WING PREPARATION AND PAINT CONTROL PLC AND THE HVAC SYSTEM
<br />CONTROL PLC.
<br />EMERGENCY SHUTDOWN — VENTILATION SYSTEM EMERGENCY SHUTOFF
<br />WHEN THE EMERGENCY SHUTDOWN SWITCH (HS—OXX01, BREAK GLASS TYPE) IS
<br />SELECTED, THE PLC SHALL AUTOMATICALLY OVERRIDE ALL OTHER MODES OF
<br />OPERATION AND DEACTIVATE THE BOOTH EXHAUST FANS (EF), SUPPLY FANS
<br />(SF). WHEN THESE SYSTEMS ARE
<br />DEACTIVATED THEIR ASSOCIATED CONTROL COMPONENTS (AUTOMATIC AIR
<br />DAMPERS, TEMPERATURE CONTROL VALVES, ETC.) SHALL RETURN TO THEIR
<br />FAIL SAFE (NORMAL) POSITIONS.
<br />WHEN V THE OFF MODE VPUSH BUTTON J(HS—OXXO5) IS SELECTED AND THE HOA'S
<br />ARE IN THE AUTO POSITIONS, THE PLC SHALL AUTOMATICALLY DEACTIVATE
<br />THE BOOTH EXHAUST FANS (EF), SUPPLY FANS (SF).
<br />WHEN THESE SYSTEMS ARE DEACTIVATED THEIR ASSOCIATED
<br />CONTROL COMPONENTS (AUTOMATIC AIR DAMPERS, TEMPERATURE CONTROL
<br />VALVES, ETC.) SHALL RETURN TO THEIR FAIL SAFE (NORMAL) POSITIONS.
<br />EQUIPMENT START—UP PRIORITY
<br />THE START—UP SEQUENCE FOR EQUIPMENT ASSOCIATED WITH THIS BOOTH
<br />SHALL BE AS LISTED IN THE START—UP PRIORITY LIST THAT FOLLOWS. ONCE
<br />A COMMAND IS ISSUED TO INITIATE A PARTICULAR OPERATIONAL MODE, THE
<br />FIRST SYSTEM SHALL BE ENERGIZED. THE SUBSEQUENT SYSTEMS SHALL BE
<br />SEQUENTIALLY ENERGIZED AS LISTED IN THE START—UP PRIORITY LIST WITH
<br />A MINIMUM 5 SECOND TIME DELAY (ADJUSTABLE) BETWEEN EACH GROUPING OF
<br />EQUIPMENT FOR THAT PARTICULAR OPERATIONAL MODE. ALL AUTOMATIC
<br />SHUTDOWN SAFETIES SHALL BE OVERRIDDEN FOR 90 SECONDS (ADJUSTABLE)
<br />TO ALLOW THE SYSTEM TO STABILIZE.
<br />START—UP PRIORITY LIST:
<br />1 — BOOTH EXHAUST FANS (EF). BOTH CAN START SIMULTANEOUSLY.
<br />2 — BOOTH SUPPLY FANS (SF). BOTH SETS CAN START SIMULTANEOUSLY.
<br />ISSUED FOR CONSTRUCTION
<br />DESIGN BY FSi
<br />DATE 06.27.2022
<br />SYM REVISION BY APPROVED DATE SYM REVISION BY APPROVED DATE ACCEPTABILITY DRAWNzis D7-22 A ESUBTITLE VERTICAL PAINT BOOTH CURRENT REVISION SYMBOL DATE
<br />C� M. C/jj THIS DESIGN AND/OR CHECKED W5523782 0 R I G 06.27.2022
<br />ORIG 767 VERTICAL PAINT BOOTH VENTILATION -PHASE 2W5523782 FSi KMC 06.27.2022 �pS���'� SPECIFICATION IS APPROVED KMC 01-07-22 SYST. GUIDELINES & SPECS. SHEET
<br />BOE//VO® y ENGINEER TITLE 767 VERTICAL PAINT BOOTH VENTILATION —PHASE 2 M31 Ob
<br />APPROVED BY DEPT. DATE ENGINEER
<br />01-07-22
<br />CHECKED
<br />N a s e �2 KMC D, -D7-22 BUILDING 40-051 JOB N0. COMPND.
<br />psi F � APPROVED
<br />fS61ONAL E
<br />oez7
<br />APPROVED MECHANICAL MASTER COL. EVERETT, WA DWG NO. 40-051—M310b
<br />smmxsn
<br />
|