1. DL manuals
  2. Conair
  3. Thermostat
  4. UGD031/0106
  5. User manual

Conair UGD031/0106 User manual

Manual is about: Hopper Temperature Controller

Summary of UGD031/0106

  • Page 1

    Hopper temperature controller process air heater, 30 to 270 kw. For use with conair carousel plus series w dryers and hads. Corporate office: 412.312.6000 l instant access 24/7 (parts and service): 800.458.1960 l parts and service: 814.437.6861 u s e r g u i d e u g d 0 3 1 / 0 1 0 6 www.Conairnet.C...

  • Page 2

    Please record your equipment’s model and serial number(s) and the date you received it in the spaces provided. It’s a good idea to record the model and serial number(s) of your equipment and the date you received it in the user guide. Our service department uses this infor- mation, along with the ma...

  • Page 3: 1-1

    Ta b l e o f c o n t e n t s 1-1 i n t r o d u c t i o n purpose of the user guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 how the guide is organized . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 your responsibilities as a user . . . . . . . . . . . . . ...

  • Page 4: 4-1

    Location and mounting of the htc heater assembly models 180 and 270. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 connecting the htc heater assembly to the dryer or blower and hopper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6 installing the iso...

  • Page 5

    Diagnostics how to identify the cause of a problem . . . . . . . . . . . . . . . . . . . . . 6-4 shut down alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5 passive alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 repair repl...

  • Page 6

    I v l ta b l e o f c o n t e n t s.

  • Page 7

    I n t r o d u c t i o n p u r p o s e o f t h e u s e r g u i d e . . . . . . . . . . . . . . 1 - 2 h o w t h e g u i d e i s o r g a n i z e d . . . . . . . . . . . . . 1 - 2 yo u r r e s p o n s i b i l i t i e s a s a u s e r . . . . . . . . . . . 1 - 3 at t e n t i o n : r e a d t h i s s o n o ...

  • Page 8

    ✐ p u r p o s e o f t h e u s e r g u i d e this user guide describes the conair hopper temperature controller (htc) process air heater and explains step-by-step how to install, oper- ate, maintain and repair this equipment. Before installing this product, please take a few moments to read the user ...

  • Page 9

    I n t r o d u c t i o n l 1 - 3 yo u r r e s p o n s i b i l i t y a s a u s e r you must be familiar with all safety procedures concerning installation, opera- tion and maintenance of this equipment. Responsible safety procedures include: • thorough review of this user guide, paying particular atte...

  • Page 10: At T E N T I O N :

    At t e n t i o n : r e a d t h i s s o n o o n e g e t s h u r t we design equipment with the user’s safety in mind. You can avoid the potential hazards identified on this machine by following the procedures outlined below and elsewhere in the user guide. W a r n i n g : i m p r o p e r i n s t a l ...

  • Page 11

    1 introduction i n t r o d u c t i o n l 1 - 5 h o w t o u s e t h e l o c k o u t d e v i c e caution: before performing maintenance or repairs on this product, you should disconnect and lockout electri- cal power sources to prevent injury from unexpected energization or start-up. A lockable device...

  • Page 12

    1 - 6 l i n t r o d u c t i o n.

  • Page 13

    D e s c r i p t i o n l 2 - 1 d e s c r i p t i o n w h a t i s t h e h t c p r o c e s s a i r h e a t e r ? . . . . . . . 2 - 2 ty p i c a l a p p l i c a t i o n s . . . . . . . . . . . . . . . . . . 2 - 3 h o w i t w o r k s . . . . . . . . . . . . . . . . . . . . . . 2 - 4 s p e c i f i c a t i...

  • Page 14: H E A T E R ?

    W h a t i s t h e h t c p r o c e s s a i r h e a t e r ? The htc process air heater is designed to control the temperature of dry air as it enters a material hopper. This process air heater can be set to increase, or “raise”, the temperature of air that was dehumidified at a central dryer or from a...

  • Page 15

    D e s c r i p t i o n l 2 - 3 2 description ty p i c a l a p p l i c a t i o n s carousel plus “w” dryer the htc process air heater is designed for use with a dehumidifying device that supplies dry air, such as a central dehumidifying dryer in which the process heaters (if present) have been disable...

  • Page 16

    2 - 4 l d e s c r i p t i o n h o w i t w o r k s the htc process air heater works a lot like the thermostat and heater in your house. The rtd probe measures the temperature of the air entering the hopper. If this air is not warm enough to properly dry the material in the hopper, the rtd sends a mes...

  • Page 17

    D e s c r i p t i o n l 2 - 5 h o w i t w o r k s ( c o n t i n u e d ) how the had works drying hopper temperature control 2 1 3 4 5 6 8 7 1 centrifugal blower assembly 2 control center 3 electric heater assembly 4 hose (15 ft) 5 insulated hose (3 ft) 6 rtd process temperature 7 rtd process protect...

  • Page 18

    S p e c i f i c a t i o n s : h t c m o d e l s 6 0 0 - 5 0 0 0 2 - 6 l d e s c r i p t i o n a b c d e f g i model htc htc-30h* htc-60h* htc-90h* htc-120h* htc-180h* htc-270h* carousel plus dryer mode l w600 w800 w1000 w1600 w2400 w3200 w5000 performance characteristics temperature range 150° - 375...

  • Page 19

    D e s c r i p t i o n l 2 - 7 s p e c i f i c a t i o n s : h t c f o r h o t a i r d r y e r s ( h a d ) a b c d e f h g i 2 description model htc htc-30b* htc-30a* htc-60a* htc-90a* htc-120a* htc-180a* hot air dryer mode l 600 800 1000 1600 2400 3200 5000 performance characteristics temperature ra...

  • Page 20

    2 - 8 l d e s c r i p t i o n.

  • Page 21

    I n s t a l l a t i o n l 3 - 1 i n s t a l l a t i o n u n p a c k i n g t h e b o x e s . . . . . . . . . . . . . . . . . 3 - 2 p r e p a r i n g f o r i n s t a l l a t i o n . . . . . . . . . . . . . . 3 - 3 i n s t a l l a t i o n o f t h e h t c c o n t r o l m o d e l s h t c 3 0 , 6 0 a n d ...

  • Page 22

    3 - 2 l i n s t a l l a t i o n u n p a c k i n g t h e b o x e s the htc process air heater comes in two boxes. Depending on the model and options ordered, the boxes could include: standard equipment • heater assembly; • control center; • 1 insulated hose; • 1 non-insulated hose; • 4 hose clamps; •...

  • Page 23

    I n s t a l l a t i o n l 3 - 3 3 description p r e p a r i n g f o r i n s t a l l a t i o n the htc process air heater is easy to install, if you prepare the mounting area properly. 1 make sure the mounting area provides: ❒ ❒ a grounded power source supplying the correct current for your htc model...

  • Page 24

    3 - 4 l i n s t a l l a t i o n i n s t a l l a t i o n o f t h e h t c c o n t r o l m o d e l h t c 1 2 0 caution: you are responsible for the structural integrity of this installation. 1 securely bolt the htc control to the left side of the floor stand. Use the supplied locking fasteners to secur...

  • Page 25: 6 0   A N D   9 0

    Caution: always disconnect and lock out the main power sources before making electrical connections. Electrical connec- tions should be made only by qualified personnel. Caution: check the discon- nect with a volt meter to insure that the power is off. I n s t a l l a t i o n l 3 - 5 l o c a t i o n...

  • Page 26

    C o n n e c t i n g t h e h t c h e a t e r a s s e m b l y t o t h e d r y e r o r b l o w e r a n d h o p p e r the inlet of the htc heater assembly should be plumbed to the air source (usually a blower or central dehumidification dryer). This inlet hose should be at least the size of the heater i...

  • Page 27

    3 description i n s t a l l a t i o n l 3 - 7 i n s t a l l i n g t h e i s o l a t i o n v a l v e s note: isolation valves should be installed when multiple hoppers are connected to a single dryer or blower. 1 turn the disconnect dial on the control center door to the off or “o” posi- tion. Lock o...

  • Page 28

    3 - 8 l i n s t a l l a t i o n c o n n e c t i n g t h e p o w e r o n m o d e l s h t c 1 8 0 a n d 2 7 0 the electrical connection consists of bringing power into the control center and wiring the heater power from the control center to the heater assembly. The incom- ing power should match the r...

  • Page 29

    I n s t a l l a t i o n l 3 - 9 3 description c o n n e c t i n g t h e p o w e r ( c o n t i n u e d ) o n m o d e l s h t c 1 8 0 a n d 2 7 0 6 insert the supplied heater power wire through a knockout in the side or bottom of the control center. Secure the wire with a rubber compression fit- ting ...

  • Page 30

    3 - 1 0 l i n s t a l l a t i o n c o n n e c t i n g t h e c o n t r o l w i r e s m o d e l s h t c 1 8 0 a n d 2 7 0 1 refer to the wiring diagram that came with your control. 2 insert the supplied control wires encased in conduit through a knockout in the side or bottom of the htc control center...

  • Page 31

    I n s t a l l a t i o n l 3 - 1 1 3 description c o n n e c t i n g t h e r t d s e n s o r s the lower rtd could be the return air sensor for the setback option if installed or the process protection sensor depending on the configuration of the system. The routing of the sensor cables should be nea...

  • Page 32

    C o n n e c t i n g t h e r t d s e n s o r s ( c o n t i n u e d ) 3 route the process temperature rtd cable to the control center. Plug the con- nector into receptacle in the side of the control center labeled “process”. Hand tighten the connector. Coil any excess cable and secure it with a wire t...

  • Page 33

    3 description i n s t a l l a t i o n l 3 - 1 3 c o n n e c t i n g t h e r t d s e n s o r s ( c o n t i n u e d ) 3 route the process protection rtd cable to the control center. Plug the con- nector into the receptacle in the side of the control center labeled “protection”. Hand tighten the connec...

  • Page 34

    3 - 1 4 l i n s t a l l a t i o n c o n n e c t i n g t h e r t d s e n s o r s ( c o n t i n u e d ) 3 route the process setback rtd cable to the control center. Plug the connector into the lower receptacle in the side of the control center. Hand tighten the con- nector. Coil any excess cable and s...

  • Page 35

    I n s t a l l a t i o n l 3 - 1 5 3 description te s t i n g t h e i n s t a l l a t i o n you have completed the htc installation. Now it’s time to make sure everything works. 1 make sure there is no material in the hopper. If there is a loader or vacuum receiver mounted on the hopper, disconnect t...

  • Page 36

    3 - 1 6 l i n s t a l l a t i o n te s t i n g t h e i n s t a l l a t i o n ( c o n t i n u e d ) 7 adjust the setpoint to the desired hopper inlet temperature. Use the setpoint adjust ▲ or ▼ buttons to set the temperature. Move the heater enable switch to the enable position. The temperature shoul...

  • Page 37: O P E R A T I O N

    S e c t i o n 4 4 opera tion o p e r a t i o n t h e h t c p r o c e s s a i r h e a t e r : c o n t r o l p a n e l d c . . . . . . . . . . . . . . . . . . . . . . 4 - 2 h t c d c c o n t r o l f u n c t i o n s . . . . . . . . . . . . . . 4 - 3 c o n t r o l f u n c t i o n f l o w c h a r t s . ....

  • Page 38

    Heaters startup / shutdown for startup: 1. With heaters in standby, turn on blower or dryer. 2. Enable heaters. For shutdown: 1. Switch heaters to standby. 2. Wait 60 seconds before turning off blower or dryer. Enable standby 4 - 2 l o p e r a t i o n t h e h t c p r o c e s s a i r h e a t e r : c ...

  • Page 39

    H t c d c c o n t r o l f u n c t i o n s htc functions are values that you can set or monitor. Press the scroll button until the function you want to set or monitor appears in the led display. C o n t r o l f u n c t i o n f l o w c h a r t s the following flow charts provide a quick summary of the...

  • Page 40

    Power on 1 888 888 2 sec all leds on 2 dc 004 2 sec software version 3 res in (default screen) 4 250 250 process setpoint and actual temp (default screen) press + or - to change setpoint. Press scroll button for process deviation alarm setpoint (dev) 5 5 dev + or - deviation band press + or - to cha...

  • Page 41

    4 opera tion 36 37 38 setup screens test mode screens press scroll button and + key at the same time for 10 sec to get in. To get out at any time press scroll to get out at any time press scroll button and - key at the same time button and - key at the same time set up 43 te st press scroll again to...

  • Page 42: General Screens

    4 - 6 l o p e r a t i o n general screens screen 1 screen 2 screen 3 screen 4 setpoint actual screen 5 888 f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s 888 dc 004 res in 250 250 20 dev once the power is turned on, this screen is displayed for 2 seconds while the control perf...

  • Page 43: General Screens

    O p e r a t i o n l 4 - 7 general screens screen 5a screen 5b f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) setback screen 1 (setback setpoint). When setback is enabled, this is the hopper outlet temperature at which the setback becomes active. Setback s...

  • Page 44: Process Screens

    To access the process screens, press the “scroll” and “+” buttons at the same time and hold for two seconds . To get out of the process screens at any time, press the scroll and “-” buttons at the same time. After two minutes, you will be returned to the default screen. This is the process header sc...

  • Page 45: Process Screens

    4 opera tion o p e r a t i o n l 4 - 9 this is the process loop break time screen. It is used to set the temperature band time for the loop break alarm. The “+/-” but- tons can be used to change the temperature band time. When the actual temperature is outside the deviation band, if the tempera- tur...

  • Page 46: Process Screens

    4 - 1 0 l o p e r a t i o n process screens screen 14 screen 15 f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) this is the process heater autotune screen. (see page 4-22 for detailed information on the autotune function.) the autotune pro- cedure should b...

  • Page 47: F U N C T I O N

    O p e r a t i o n l 4 - 1 1 4 opera tion f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) p r o c e s s p r o t e c t i o n s c r e e n s * screen 16 protection screen 17 screen 18 when at screen 6, page 4-8, (or the process screens), to access the process ...

  • Page 48: F U N C T I O N

    4 - 1 2 l o p e r a t i o n f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) p r o c e s s p r o t e c t i o n s c r e e n s screen 19 screen 20 screen 21 this is the process protection high alarm delay screen. It is used to set the delay time for the proce...

  • Page 49: F U N C T I O N

    4 opera tion o p e r a t i o n l 4 - 1 3 f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) d c r e s i n s e t u p s c r e e n screen 30 screen 31 screen 32 to access the dc resin setup screens, press the scroll and “+” buttons at the same time and hold for ...

  • Page 50: F U N C T I O N

    4 - 1 4 l o p e r a t i o n f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) d c r e s i n s e t u p s c r e e n screen 33 screen 34 screen 34a screen 34b this is the setback load rate setpoint. (not available at this time.) this is the load rate reading. (...

  • Page 51: F U N C T I O N

    4 opera tion o p e r a t i o n l 4 - 1 5 f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) d c r e s i n s e t u p s c r e e n screen 35 screen 35a this is the process heater alarm delay. It is used to delay the process heater alarm. This number is the delay...

  • Page 52: F U N C T I O N

    4 - 1 6 l o p e r a t i o n f u n c t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) s e t u p s c r e e n s screen 36 screen 37 screen 38 screen 39 screen 41 screen 42 to access the setup screens, press the scroll and “+” buttons at the same time and hold for ten ...

  • Page 53: Te S T   M O D E

    C o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) te s t m o d e s c r e e n s screen 43 screen 44 * screen 45 screen 47 f u n c t i o n to access the test mode screens, press "+" button when you are in the test screen (screen 41). To get out of the test mode screens at any...

  • Page 54: Te S T   M O D E

    4 - 1 8 l o p e r a t i o n c o n t r o l f u n c t i o n d e s c r i p t i o n s ( c o n t i n u e d ) te s t m o d e s c r e e n s * screen 50 screen 52 screen 53 f u n c t i o n this is the output 3 screen. Press the "+" key to jog output 3. Output 3 on a heater is the process heater solid-state ...

  • Page 55

    O p e r a t i o n l 4 - 1 9 4 opera tion h t c d c c o n t r o l a l a r m s p assive a larms passive alarms flash the alarm code and display process temperature until the alarm condition goes away, or it becomes a shutdown alarm. C o d e d e s c r i p t i o n a l a r m l e d p1 process temperature ...

  • Page 56

    4 - 2 0 l o p e r a t i o n i n i t i a l o p e r a t i o n ( f o r h a d o n l y ) 1 hopper material: fill the hopper with the material to be heated. 2 blower inlet filter: verify that the area around the inlet filter is clean and free of debris. This will extend the time between service of this fi...

  • Page 57

    I n i t i a l o p e r a t i o n ( f o r c a r o u s e l p l u s d r y e r h t c ) 1 hopper material: fill the hopper with the material to be heated. Warning: fire potential - the electric heating elements are exposed to the air going into the hopper. It is important that there is no debris in this a...

  • Page 58: A U T O T U N I N G

    4 - 2 2 l o p e r a t i o n a u t o t u n i n g follow the procedure below to “autotune” the htc. 1 use the selector switch and put the htc control into “standby”. 2 adjust the setpoint to a “normal” setting. 3 establish the normal operating air flow. 4 access the process menu by pressing and holdin...

  • Page 59: A U T O T U N I N G

    O p e r a t i o n l 4 - 2 3 a u t o t u n i n g ( c o n t i n u e d ) 10 to return to the normal control, cycle the heater to standby and then back to enable. 11 if “tune error 1” is displayed, the autotune was not successful and the process must be repeated. The most likely reason for this error is...

  • Page 60

    N o r m a l o p e r a t i o n to s t a r t h e a t i n g 1 determine what the htc’s setpoint must be for your process and material. 2 make sure there is material in the hopper. 3 start the dryer or process blower to begin air flow. Set the proper flow on the blower if equipped. 4 turn on the main po...

  • Page 61

    4 opera tion o p e r a t i o n l 4 - 2 5 n o r m a l o p e r a t i o n to s t o p h e a t i n g 1 turn the heater to “standby”. Important: always turn off the htc before the dryer or process blower. 2 allow the htc to cool to below 100°f (37.8°c). 3 turn off the blower or dryer. 4 be sure to disconn...

  • Page 62

    4 - 2 6 l o p e r a t i o n.

  • Page 63

    M a i n t e n a n c e p r e v e n t a t i v e m a i n t e n a n c e c h e c k l i s t . . . . . . . 5 - 2 s e c t i o n 5 maintenance 5 m a i n t e n a n c e l 5 - 1.

  • Page 64: C H E C K L I S T

    5 - 2 l m a i n t e n a n c e p r e v e n t a t i v e m a i n t e n a n c e c h e c k l i s t the htc process air heater requires little maintenance. We recommend the fol- lowing maintenance schedule and tasks. • w h e n e v e r y o u c h a n g e m a t e r i a l o r p r o c e s s ❒ ❒ change the htc ...

  • Page 65

    Tr o u b l e s h o o t i n g b e f o r e b e g i n n i n g . . . . . . . . . . . . . . . . . . . . 6 - 2 a f e w w o r d s o f c a u t i o n . . . . . . . . . . . . . . 6 - 3 d i a g n o s t i c s h o w t o i d e n t i f y t h e c a u s e o f a p r o b l e m . . . . 6 - 4 s h u t d o w n a l a r m s...

  • Page 66

    B e f o r e b e g i n n i n g you can avoid most problems by following the recommended installation and maintenance procedures outlined in this user guide. If you do have a problem, this section will help you determine what caused it and how to fix it. Before you start disassembling the htc process ...

  • Page 67

    B e f o r e b e g i n n i n g ( c o n t i n u e d ) ❏ find the wiring and equipment diagrams that were shipped with your heater. These dia- grams are the best reference for correcting a problem. The diagrams also will note any custom features, such as special wiring or alarm capabilities, not covere...

  • Page 68: P R O B L E M

    6 - 4 l tr o u b l e s h o o t i n g h o w t o i d e n t i f y t h e c a u s e o f a p r o b l e m most heater malfunctions are indicated by an illuminated alarm light on the htc process air heater control panel. A problem can trigger two types of alarms: • shut down: the heater has automatically sh...

  • Page 69: Possible Cause

    6 troubleshootin g s h u t d o w n a l a r m s if the red acknowledge alarm led is solid, the alarm is a shutdown alarm. The heater will shutdown automatically to prevent damage to the equipment or personnel. Possible cause the process high temperature is not at least 10°f (5.6°c) above the setpoint...

  • Page 70: Problem

    6 - 6 l tr o u b l e s h o o t i n g s h u t d o w n a l a r m s ( c o n t i n u e d ) problem a3 process heater high temperature – the snap switch in the process heater tube opens due to excessive temper- ature. A10 rtd integrity – if a rtd is faulty. A39 eeprom write error. Possible cause there is...

  • Page 71: Problem

    Tr o u b l e s h o o t i n g l 6 - 7 s h u t d o w n a l a r m s ( c o n t i n u e d ) problem a49 process protection high temperature – if the process protection temperature exceeds the process protection high temperature setpoint, it shuts down the dryer. Defaults are set to 600°f (315.6°c) for 10...

  • Page 72: Problem

    P a s s i v e a l a r m s if the red alarm led is blinking, the alarm is a passive alarm. The heater contin- ues to operate, but this problem could prevent correct heating of your material. Note that once the acknowledge alarm button is pressed once, the blinking red led becomes solid. A passive ala...

  • Page 73

    6 troubleshootin g tr o u b l e s h o o t i n g l 6 - 9 r e p l a c i n g f u s e s 1 disconnect and lockout the main power supply. 2 open the control center. 3 check the fuse. If necessary, pull the fuse out and replace it with a fuse of the same type and rating. Fuse blocks to locate the appropria...

  • Page 74

    C h e c k i n g h e a t e r s o l i d s t a t e r e l a y s 1 disconnect and lockout the main power supply. 2 open the control center door. 3 locate the process solid state relays (ssrs). Refer to the wiring diagrams that came with your heater. 4 check the resistance using an ohmmeter. 6 - 1 0 l tr ...

  • Page 75: S E N S O R S

    6 troubleshootin g tr o u b l e s h o o t i n g l 6 - 1 1 c h e c k i n g o r r e p l a c i n g te m p e r a t u r e s e n s o r s the htc process air heater uses rtd sensors to monitor the process temperature in the hopper inlet, the setback temperature in the hopper outlet, and the process protect...

  • Page 76

    6 - 1 2 l tr o u b l e s h o o t i n g r e p l a c i n g t h e h e a t i n g e l e m e n t s 1 disconnect and lockout the main power. 2 gain access to the heating elements by removing screws that secure the heating element cover to the enclosure. 3 remove the heating element cover by tilting the top...

  • Page 77: E L E M E N T S

    6 troubleshootin g tr o u b l e s h o o t i n g l 6 - 1 3 r e p l a c i n g t h e h e a t i n g e l e m e n t s ( c o n t i n u e d ) 7 remove the hose clamp securing the insulated hose to the outlet of the heat- ing element. Remove the hose. 8 remove the hose clamps securing the heating element to ...

  • Page 78

    R e p l a c i n g t h e a i r f l o w d i f f e r e n t i a l p r e s s u r e s w i t c h if the air flow differential pressure switch fails to detect the pressure drop between the heater inlet and outlet, it should be replaced. 1 stop the heater, disconnect and lockout the main power. 2 gain access...

  • Page 79

    6 troubleshootin g tr o u b l e s h o o t i n g l 6 - 1 5 r e p l a c i n g t h e a i r f l o w d i f f e r e n t i a l p r e s s u r e s w i t c h ( c o n t i n u e d ) 6 remove the mounting hardware securing the pressure switch to the heating element enclosure. 7 align the new pressure switch with...

  • Page 80

    6 - 1 6 l tr o u b l e s h o o t i n g.

  • Page 81

    W e ’ r e h e r e t o h e l p conair has made the largest investment in customer support in the plastics indus- try. Our service experts are available to help with any problem you might have installing and operating your equipment. Your conair sales representative also can help analyze the nature of...

  • Page 82

    A - 2 l a p p e n d i x e q u i p m e n t g u a r a n t e e conair guarantees the machinery and equipment on this order, for a period as defined in the quotation from date of shipment, against defects in material and workmanship under the normal use and service for which it was recommended (except f...

  • Page 83: R E C E I V I N G

    B l o w e r i n s t a l l a t i o n a n d m a i n t e n a n c e this addendum will assist you in installing and maintaining your had blower. By following the general instructions presented, you will prolong the life of the equipment, while preventing unexpected downtime. R e c e i v i n g all shipme...

  • Page 84: H A N D L I N G

    A d - 2 l a d d e n d u m h a n d l i n g small units should be handled carefully and lifted only by the base, never by the shaft, coupling, motor, or housing. Large units should be lifted by the base or by the lifting eyes. Precautions should be taken to avoid dropping or jarring the equipment as t...

  • Page 85

    W i r i n g t h e s t a r t e r the electrical connection consists of bringing power to the starter on the blower assembly. The incoming power should match the rated nameplate power required on the serial tag on the blower. This power should be clean and have a voltage variation of no more that +/- ...

  • Page 86

    B e f o r e s t a r t - u p before start-up, the following should be verified. 1 fasteners - all foundation bolts, wheel hub setscrews, wheel locking bolts, and bearing locking collars must be tight. 2 bearings - check the bearings and make certain they are properly lubricated. 3 fan wheel - turn ov...

  • Page 87: S T A R T - U P

    S t a r t - u p 1 using the start/stop button, ”jog" the motor to check for proper wheel rotation. The motor should be started in accordance with the manufac- turer's recommendations. Arrows on the fan indi- cate the proper direction of rotation and airflow. 2 throttle the blower discharge damper ¼ ...

  • Page 88

    B a l a n c e a n d v i b r a t i o n all fan impellers are dynamically balanced prior to installation in the fan assembly. After assembly, fans supplied with motors are test run and fine-tune balanced to reduce vibration levels to acceptable limits as shown in table below (from amca standard 204-96...

  • Page 89

    G e n e r a l m a i n t e n a n c e 1 inspection - a definite time schedule for inspecting all rotating parts and accessories should be established. The frequency of inspection depends on the severity of operation and the locality. Inspections might be weekly at first in order to set up the schedule...

  • Page 90

    F a n b e a r i n g m a i n t e n a n c e for most applications, a lithium base grease (such as mobilith aw2) conform- ing to a nlgi grade 2 consistency should be used. This type of grease inhibits rust, is water resistant, and has a temperature range of -30 to 200°f (-34.3 to 93.3°c), with intermit...

  • Page 91

    M o t o r m a i n t e n a n c e lubricate the motor bearings to the manufacturer's recommendations. Lubrication recommendations are included with the packet attached to the fan. Should this packet be missing, the following will apply: integral horsepower ball bearings motors: motors having pipe plug...

  • Page 92: I M P E L L E R S

    V i b r a t i o n l e v e l o f r e p l a c e m e n t i m p e l l e r s all replacement impellers are dynamically balanced by the manufacturer prior to shipment. Occasionally, an impeller that has been factory-balanced will yield poor balance/vibration results when installed and operated. This does ...

  • Page 93: Problem

    A d d e n d u m l a d - 1 1 b l o w e r tr o u b l e s h o o t i n g in the event that trouble is experienced in the field, the following troubleshooting table lists the most common blower difficulties. These points should be checked before contacting conair customer service. Problem the blower does...

  • Page 94: Problem

    A d - 1 2 l a d d e n d u m b l o w e r tr o u b l e s h o o t i n g ( c o n t i n u e d ) problem excessive vibration and/or noise (continued). Possible cause worn bearings. Damaged wheel or motor. Broken or loose bolts and setscrews. Bent shaft. Fan wheel or driver unbalanced. 120 cycle magnetic h...

  • Page 95: Problem

    A d d e n d u m l a d - 1 3 b l o w e r tr o u b l e s h o o t i n g ( c o n t i n u e d ) problem overheated bearings. Possible cause too much grease. Damaged wheel or driver. Bent shaft. Abnormal end thrust. Dirt in bearings. Solution remove and excess grease (see "fan bearing maintenance" [page a...

  • Page 96

    O r d e r i n g s p a r e p a r t s contact conair's parts department and supply the following information: 1 conair order number/serial number. 2 fan serial number stamped on nameplate. 3 fan code and model stamped on nameplate. 4 fan arrangement. 5 description of the part required. 6 part number, ...

  • Page 97

    A d d e n d u m l a d - 1 5 s p e c i f i c a t i o n s : h o t a i r d r y e r ( h a d ) b l o w e r a b c hot air dryer mode l (had) 600 800 1000 1600 2400 3200 5000 recommended model htc* htc-30b† htc-30b† htc-30a† htc-60a† htc-90a† htc-120a† htc-120a† performance characteristics flow rate cfm 30...