background image

Section 7.0 – ROUTINE MAINTENANCE 

 
Routine Maintenance 

 

The air cooled condenser on your dryer must be kept clean.  Inspect on a regular 

basis for dirt or debris that might accumulate.  Remove any debris immediately. 
 

Although the filter on your dryer is connected to a drain timer it is recommended 
that the drain and solenoid be checked weekly.  The Y-strainer should be checked 

monthly.  (Fig. 4) 
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
                 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

                        

It is not advisable to tamper with the other adjustments unless you      
are familiar with refrigeration.  The controls interact with each other 

and, although the effect of an adjustment may not be immediately 
obvious, it will affect the dryer’s performance. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

C

H

H

A

A

R

R

G

G

E

E

 

 

L

L

I

I

Q

Q

U

U

I

I

D

D

 

 

O

O

N

N

L

L

Y

Y

,

,

 

 

D

D

O

O

 

 

N

N

O

O

T

T

 

 

V

V

A

A

P

P

O

O

R

R

!

!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ƒ

ƒ

 

 

See 

 

tag 

 

for 

 

correct 

 

refrigerant 

 

charge. 

 

See tag for correct refrigerant charge.

ƒ

ƒ

 

 

Unit 

 

needs 

 

to 

 

be 

 

pulled 

 

into 

 

vacuum 

 

500 

 

micron 

 

(minimum) 

 

Unit needs to be pulled into vacuum 500 micron (minimum)

ƒ

ƒ

 

 

The 

 

full 

 

charge 

 

might 

 

not 

 

be 

 

accepted. 

 

 

 

If 

 

this 

 

occurs, 

 

the 

 

unit 

 

can 

 

be 

 

started 

 

and 

 

then 

 

the 

 

remainder 

 

of 

 

the 

 

charge 

 

should 

 

be 

 

slowly 

 

metered 

 

into 

 

the 

 

suction 

 

side 

 

(Suction 

 

side 

 

is 

 

always 

 

the 

 

inlet 

 

to 

 

compressor 

 

side). 

 

The full charge might not be accepted. If this occurs, the unit
can be started and then the remainder of the charge should be
slowly metered into the suction side (Suction side is always the

inlet to compressor side).

ƒ

ƒ

 

 

The 

 

unit 

 

needs 

 

to 

 

maintain 

 

 

suction 

 

pressure 

 

between 

 

28…35 

 

PSI 

 

with 

 

no 

 

air 

 

load. 

 

 

 

If 

 

the 

 

full 

 

charge 

 

has 

 

been 

 

applied 

 

and 

 

suction 

 

pressure 

 

is 

 

too 

 

high, 

 

see 

 

Adjustments 

 

in 

 

Section 

 

5. 

 

The unit needs to maintain a suction pressure between 28…35

PSI with no air load. If the full charge has been applied and
suction pressure is too high, see Adjustments in Section 5.

 

 

 

 

Содержание SC80

Страница 1: ...Airtek Division SMART CYCLE COLD TRAP REFRIGERATED AIR DRYERS OPERATORS MANUAL MODELS SC CT80 SC CT3000 SERVICE DEPARTMENT 1 800 451 6023...

Страница 2: ...ection 5 0 SENSORS CONTROLS RELAYS Section 6 0 START UP PROCEDURE Section 6 0 ROUNTINE MAINTENANCE Section 7 0 DIAGNOSTIC CODES Section 8 0 TROUBLE SHOOTING Section 9 0 MAINTENACE SCHEDULE Section 10...

Страница 3: ...ase Heate r WATTS Crankcase Heater Voltage VOLT Number of Fans Fan Motor Horse Power HP Max Amp Draw AMPS copper THHN Wire Size AWG Fuse Size AMP enter n a if not used Nema Starter Size PART Overload...

Страница 4: ...ure between 50 95 F 10 35 C and free from explosive and corrosive fumes Three 3 feet 92cm of space must be allowed between all open grills walls or other objects Where ambient temperatures may periodi...

Страница 5: ...zed when the refrigeration suction gauge reads between 28 to 35 PSI Plumbing the Air Lines The dryers are shipped ready to run All connections are made to the outside of the cabinet Air piping must be...

Страница 6: ...a bypass line and gate valve to permit isolation of the dryer from the air system This is done to provide easy service and or removal of the dryer without interruption of air to the system Fig 2 Model...

Страница 7: ...c box cover from inside unit 2 Locate the wires 3 Locate hole on side of box place and tighten connector run wires through connector 4 Using wire connectors connect Black to Hot wire White to Neutral...

Страница 8: ...Section 4 0 Controls REFRIGERANT DRYER CONTROLLER FEATURES AND OPERATIONS 5 1 4 8 10 2 6 3 7 9...

Страница 9: ...s The set point will change once for each time pressed If the button is pressed and held the set point will change one step per second 5 Set Button Toggles between Actual Display mode and Set Point mo...

Страница 10: ...every 30 minutes independent to the float signal The 30 minute timed intercal setting can be adjusted down to 1 minute or raised up to 60 minutes if desired To adjust the drain Timed Interval setting...

Страница 11: ...ter cooled units 13 High Inlet Temp Display Should not be above 100 F High inlet air temp can cause overloading of dryer If lit check compressed air after cooler and or oil cooler on air compressor 12...

Страница 12: ...lay and LED alarm turns on when the dew point is 15 F above the set point This is also active during any error conditions Compressor Unloader 1 Relay CU1 FU Panel Only Turns on when the dew point is b...

Страница 13: ...panel from unit 4 Some units are shipped with the refrigeration service valve tagged These tagged service valves must not be opened until the dryer is ready to be started and the main power is perman...

Страница 14: ...ow introduce compressed air to the dryer 11 Check the automatic drain for proper operation Drain should open at regular intervals based on the drain control settings Clean Y Strainer after the first 8...

Страница 15: ...ant charge See tag for correct refrigerant charge Unit needs to be pulled into vacuum 500 micron minimum Unit needs to be pulled into vacuum 500 micron minimum The full charge might not be accepted If...

Страница 16: ...tu ua al l d de ew w p po oi in nt t f fa al ll ls s t to o 2 20 0 F F o or r l lo ow we er r U Un nl lo oa ad de er r v va al lv ve e f fa ai il li in ng g t to o o op pe en n R Re ep pl la ac ce e E...

Страница 17: ...e Contact the factory for verification prior to proceeding with this maintenance item MAINTENANCE PROCEDURES Before performing any maintenance on the machine ensure that air pressure is vented from th...

Страница 18: ...bonnets then need to be removed exposing the tube side of the condenser The tube side should be inspected for any debris and cleaned If soft deposits are found they can be cleaned using a pneumatic t...

Страница 19: ...ated by the On Time dial Removing and reapplying power will again actuate the timing cycle Second pushing the test button will actuate the valve for as long as the button is pressed Third once the tim...

Страница 20: ...Section 11 0 MAINTENANCE CHARTS Maintenance Log Date Service Performed Parts Replaced Initials...

Страница 21: ...Section 11 0 MAINTENANCE CHARTS cont Element Replacement Log Part No Date Initials...

Страница 22: ...Section 12 0 ASSOCIATED DRAWINGS...

Страница 23: ......

Страница 24: ......

Страница 25: ......

Страница 26: ......

Страница 27: ......

Страница 28: ......

Страница 29: ......

Страница 30: ......

Страница 31: ......

Страница 32: ......

Страница 33: ......

Страница 34: ......

Страница 35: ......

Страница 36: ......

Страница 37: ......

Страница 38: ...om FINAL OPERATION CHECK LIST Inlet air temperature is Inlet PSIG is The dew point temperature controller reads between and Air compressor HP or Max SCFM is Is the dryer a minimum of 3 from any struct...

Страница 39: ......

Отзывы: