manualshive.com logo in svg
background image

5

WHAT IS 

T

RUE 

T

RACK 

T

ECHNOLOGY 

?

True Track Technology is a unique control system that conditions power to the compressor varying the refrigeration
system’s capacity to match the requirements for dry air.

As the load is reduced the compressor will be slowed until its output capacity matches the load. The speed of the compressor
(RPM) will vary directly with the changing need for refrigeration capacity, maintaining a consistent dew point. The power
consumption of the unit is directly proportional to the refrigeration capacity of the system, it is subsequently minimized. The fan
motor will be controlled in the same manner. This results in control of the heat transfer from the high temperature reservoir. Flow of
refrigerant in the system is dynamic. Changes in load, ambient, fan on/off all result in reactions by the refrigerant control devises as
they attempt to maintain a constant flow rate. These fluctuations in flow change the capacity of the system and consequently
change the measured output of the system, in this case the Dew Point of the outlet air.

Controlling the fan speed as opposed to cycling the fan reduces the fluctuation of the refrigerant flow improves the system
efficiency and stabilizes the output air dew point. The key to successfully applying True Track Technology to the dehumidification
process is in sensing the incoming load.

The load is indicated by :

The inlet flow rate
The inlet air temperature
The moisture content of the incoming air.

The refrigeration system indicators are:

The Evaporator Outlet temperature
The Low side pressure

This design monitors the Low-side pressure as the measure of the load on the refrigeration system. A pressure transducer
provides the control signal.
The controller maintains a fixed suction pressure over the dryers full flow range. The low-end frequency is set at the minimum
motor speed that provides
adequate oil distribution in the compressor.

The unit has three control modes:

Start-up Mode

 

Controlled Acceleration

 

The control gradually increases the input frequency and voltage until the motor is at full speed.

 

The industry term for this is "SOFT START".

 

It greatly reduces the current inrush, necessary to initiate rotation.

 

It reduces winding temperatures and prolongs motor life

.

Pressure Monitor

 

The control monitors the input from the sensing device, decreasing motor speed to raise the pressure or increasing
the speed to lower the pressure.

 

As the load on the refrigeration system increases, the pressure rises. The control reacts by increasing the frequency
and voltage to the motor. It speeds up improving its capacity and

 returning the pressure to the set point.

 

As the load on the refrigeration system decreases, the pressure drops. The control reacts by decreasing the
frequency and voltage to the motor. It slows down reducing its capacity and returning the pressure to the set point.

Hot Gas Mode

 

As the load on the refrigeration system continues to be reduced and the motor is slowed to the predetermined
minimum (RPM), the control switches to the Hot Gas Mode.

 

The control locks the motor speed and initiates hot gas bypass. 

 

Injecting hot gas from the high side of the refrigeration system in to the low side prevents evaporator and drain
freeze-ups during extremely low demand.

 

Increasing the load at this time will switch the control back into the pressure monitor mode and the unit will function
as described above.

All of this creates tight control of the evaporating pressure resulting in tight control of the output pressure dew point. Regulating the
refrigeration system capacity to match the load reduces the overall power consumption of the unit. Locking the hot gas by-pass out
during, the pressure monitor mode increases the full load capacity of the unit.

Содержание VSS Series

Страница 1: ...VSS SERIES REFRIGERATED DRYER OPERATIONS MAINTENANCE 300 1000 SCFM PRINTED IN THE USA 2 2 645 REV A 10 00...

Страница 2: ...on Pg 11 16 Location Typical Installation Piping and Connections Recommended Filters Electrical Connections Drain Valve Time Settings Remote Contact Hook up SECTION 5 Start up and Shutdown Procedures...

Страница 3: ...MANUFACTURE V S S FLOW SCFM OPTIONS VOLTAGE A AIR COOLED W WATER COOLED 300 400 500 650 800 1000 C REMOTE OPERATION CONTACTS 48V MAX INPUT F PACKAGED FILTERS P IN OUT AIR PRESSURE GAUGES R REFRIGERANT...

Страница 4: ...to condense Liquid water is entrained in the air stream where it enters a high efficiency water separator and is removed from the system by means of an automatic drain Refrigerant circuit Refrigerant...

Страница 5: ...the dryers full flow range The low end frequency is set at the minimum motor speed that provides adequate oil distribution in the compressor The unit has three control modes Start up Mode Controlled...

Страница 6: ...ILL NOT BE HELD LIABLE FOR FAILURE TO FOLLOW THESE INSTRUCTIONS AND GUIDELINES Before starting or installing the dryer be sure that all power to the unit is off valves are shut and the air circuit is...

Страница 7: ...CORRECT AND UP TO APPLICABLE CODES Read and understand the MSDS and first aid instructions for Refrigerant 22 R 22 2 3 OPERATION DO NOT OPERATE THE DRYER ABOVE THE STATED WORKING PRESSURE SEE SPECIFIC...

Страница 8: ...TNMQMTN PLS PLS PLS PLS PLS PLS PLS PLS OLT OLT OLT OLT QQ QQ QQ QQ PT PT PT PT RS RS RS RS PWLN PWLN PWLN PWLN QRLV QRLV QRLV QRLV QPLU QPLU QPLU QPLU OSLW OSLW OSLW OSLW M M M M QLO QLO QLO QLO ONLO...

Страница 9: ...H qrb mncp_rgle qrb mncp_rgle qrb mncp_rgle jmu qgbc fgef qgbc kmbcj dj_ dsqc FpKPPG gljcr _gp npcqqL gljcr _gp rcknL _k gclr g_p rcknL rcqr npcqqL rcqr npcqqL tqqQNN_KQ U OS RV L ONN nqge ONNm d ONNm...

Страница 10: ...NMQ ONLQ UNLN TLNN OSLN ONLV tqqONNNuKQ ONNN qadk PQNMTNMQ tqqONNNuKR ONNN qadk RTNMTNMQ K QVNMQMSN ONLQ UNLN TLNN OSLN ONLV tqqONNNuKS ONNN qadk SUSMTNMQ k_v af_pecH qrbL mncp_rgle qrbL mncp_rgle qrb...

Страница 11: ...sure room for maintenance and proper air circulation to air cooled components Some jurisdictions have codes requiring specific clearances around equipment Check with all local authorities to ensure co...

Страница 12: ...ll pipe should be deburred and threaded to a proper depth and length before installation Threads should be inspected for cleanliness and depth of cut Good quality pipe compound should be used in the m...

Страница 13: ...oalescing filters should be used in conjunction with a good particulate filter The particulate filter is used to extend the life and the function of the coalescing element Recommended filters are as f...

Страница 14: ...NSTALL THE PROPER ELECTRICAL PROTECTION CAN RESULT IN PERSONAL INJURY FIRE EQUIPMENT DAMAGE OR DEATH THE MANUFACTURER IS NOT RESPONSIBLE FOR DAMAGE OR INJURY CAUSED BY LACK OF OR IMPROPERLY INSTALLED...

Страница 15: ...NG DIAGRAM DRAIN TIMING SEC JUMPER SELECTION 2 3 4 1 5 8 7 6 L A C O L E T O M E R NO VOLTAGE CONTACT RUNNING SIGNAL OUTPUT DEW POINT ALARM SIGNAL OUTPUT ALARM SIGNAL OUTPUT ON WHEN DEW POINT IS ABNOR...

Страница 16: ...he diagram of the option terminal board when making connections PLEASE NOTE CONTACT RATINGS ON REMOTE OPTION BOARD ARE 48 VAC DC a Terminals 1 and 5 are connected Power is supplied to one side of the...

Страница 17: ...ead Start Mode II Turn dryer ON 5 With valves in position 2 SLOWLY pressurize the airside of the system by opening the inlet valve to the dryer As pressure increases the dryer will turn on and begin t...

Страница 18: ...ed You will hear the Motor Speed change Go to Operation Monitor to follow speed and kW change INITIALIZE Press Menu Arrow up until display reads Initialize Press Enter Arrow up until the display reads...

Страница 19: ...he drain by depressing the drain switch on the main control panel 2 Inspect and log pressure differential readings across filters Inspect filters if they are out of range Change as necessary MONTHLY 1...

Страница 20: ...ITCH TO MANUAL AND REPLACE SWITCH ALARM LAMP IS ON SAFETY IS TRIPPED REMOVE POWER AND CLEAR SAFETY MANUAL MODE DEWPOINT LAMP DOES NOT TURN ON MAIN SWITCH IS NOT ON SUPPLY VOLTAGE IS OUT OF RANGE OR NO...

Страница 21: ...N HEAT EXCHANGER AIR PRESSURE IS TOO LOW SAFETY IS ON DUE TO LOSS OF REFRIGERANT HIGH AMBIENT TEMP HIGH INLET TEMP LOW INLET AIR PRESSURE FLOW TOO HIGH PLUGGED FILTER NON FUNCTIONAL FAN MOTOR LIQUID I...

Страница 22: ...lM_ UNNWQPT UNNWQPT OR fc_r cvaf_lecp _qqwL UNOROPO UNOROPO UNOROPO UNOROPO OS n_lcjJjcdr qgbc UNNWPVO UNNWPVO UNNWPVO UNNWPVO OT n_lcjJjmstcpcb UNNWPWT lM_ UNNWPWT lM_ OU n_lcjJjmucp dpmlr UNQUNSO U...

Страница 23: ...JamknL bgqaf_pec UNNWQQN UNNWQQN UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp UNNWQOO UNNWQOO lM_ lM_ PT t_jtcJc...

Страница 24: ...gqrcpJamknL bgqaf_pec UNNWQQN UNNWQQN UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp UNNWQPQ UNNWQPQ UNNWQPR UNNWQ...

Страница 25: ...rfcpkgqrcpJamknL bgqaf_pec UNNWQQN UNNWQQN UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp lM_ lM_ UNNWQPQ UNNWQPQ...

Страница 26: ...knL bgqaf_pec UNNWQQN UNNWQQN UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp UNNWQPR UNNWQPR lM_ lM_ PT t_jtcJcvf_...

Страница 27: ...mknL bgqaf_pec UNNWQQN UNNWQQN UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp UNNWQNU UNNWQNU UNNWQPR UNNWQPR PT t...

Страница 28: ...UNNWQQN UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp lM_ lM_ UNOOOTQ UNOOOTQ PT t_jtcJcvf_sqr UNNWPRV UNNWPRV U...

Страница 29: ...QQN UNNWQQN UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp UNNWQPR UNNWQPR lM_ lM_ PT t_jtcJcvf_sqr UNNWPRV UNNWPR...

Страница 30: ...UNNWQQN UNNWQQN PQ rfcpkgqrcpJbcu nmglr UNNWQPW UNNWQPW UNNWQPW UNNWQPW PR rfcpkmqr_r UNNWQNV UNNWQNV UNNWQNV UNNWQNV PS rp_lqdmpkcp UNOOOTQ UNOOOTQ UNNWQPR UNNWQPR PT t_jtcJcvf_sqr UNNNWPRV UNNNWPRV...

Страница 31: ...31 WIRING DIAGRAMS...

Страница 32: ...32...

Страница 33: ...33...

Страница 34: ...34...

Страница 35: ...35...

Страница 36: ...36...

Страница 37: ...ers option to repair or replace the heat exchanger This extended warranty is limited to parts only and will be prorated in the following manner year 1 100 of current cost year 2 100 year 3 75 year 4 5...

Страница 38: ...solve it over the phone If the problem cannot be resolved over the phone arrangements will be made for an outside service source to look at the dryer and determine a course of action for repairs The c...

Страница 39: ...ir freight is required the manufacturer will pay the cost of normal ground transportation and the customer will be liable for costs above those charges Removal or reinstallation of equipment or extra...

Страница 40: ...RANTY CLAIM INITIATION FORM FILL IN INFORMATION AND FAX TO 303 783 2333 UNIT MODEL NUMBER UNIT SERIAL NUMBER INSTALLATION DATE DISTRIBUTOR P O NUMBER INITIATES SERVICE CALL FAX NUMBER WHERE WARRANTY C...

Отзывы: