background image

QR 340

Quincy Compressor

50216-105, July 1999

26

3501 Wismann Lane, Quincy IL. - 62305-3116

WARNING !

SUCTION VALVE

UNLOADER ASSEMBLIES

Description

The Quincy suction valve unloader assembly con-

sists of unloading arrangements on the suction valves,

having a plunger to contact the suction valve disc

and an unloader pilot valve (part no.s 110832-***,

and 111422-*** & 111423-***) to automatically regu-

late the passing of receiver pressure to the unload-

ing arrangement.

Application

Suction valve unloader assemblies are recommended

for use on Quincy compressors where the compres-

sor is to run continuously and a constant pressure is

to be maintained. The purpose is to automatically

unseat the   suction valve of the compressor when the

air supply is greater than the demand.

Operation

Unloading occurs when receiver pressure is suffi-

cient to overcome pilot valve spring pressure. The

check ball is then unseated, allowing receiver pres-

sure to pass to the unloading arrangements. The

compressor will run unloaded until the receiver

pressure drops to a predetermined level. At this

time, the action of the ball is reversed, shutting off

receiver pressure to the unloader arrangement and

venting the unloader to atmosphere. This allows the

compressor to load. The drive, either electric motor

or combustion engine, runs continuously and must

be started and stopped manually.

Pilot valve 111423-*** can be locked out, for

models equipped with dual control, to provide auto-

matic start/stop operation. The knurled knob at the

top of the pilot can be turned clockwise, until it stops,

to lock it out. A pressure switch is required to stop

the motor. Failure to use a pressure switch, with the

pilot valve locked out, could result in unsafe condi-

tions.

A pressure switch must be incorporated whenever pilot

valve 111423-*** is employed as part of the control system.

The compressor will operate in the continous run

mode if the knurled knob is turned counterclockwise

until it stops.

Installation

The pilot valve is to be connected to the air receiver

using a minimum of 3/8" o.d. copper tube. Compres-

sors in the field, not equipped with a suction valve

unloader assembly, can be converted to constant

speed. Consult your local Quincy Compressor Dis-

tributor for assistance with conversion procedures.

Service

Periodically check the filter & screens in the inlet of

the pilot valve to make sure they are free of obstruc-

tions. If they become clogged, remove and clean or

replace. Inspect the "o"ring located in the opposite

end of the pilot valve body for wear or damage;

replace if necessary.

Adjustment

The unloading pressure is adjustable and is regu-

lated by turning the hex nut (marked "unload adj."

in cross sectional illustrations of pilot valves). Turn

the hex nut clockwise to increase and counterclock-

wise to decrease the unloading pressure.

The differential (difference between unloading

and loading pressure) is set by turning the hex nut

(marked "differential adj." in the cross sectional

illustrations of the pilot valves). Increase the differ-

ential pressure by turning the hex nut clockwise -

decrease by turning counterclockwise. Tighten the

locknuts after adjustment.

CHECK VALVE

ASSEMBLIES

Item

Part

#

Qty.

Number

Description

Check Valve Assembly Replacement Parts

6194X2

Check Valve Assembly

1

1

123157-010 "o"ring

2

1

6196-002

disc

6194X3

Check Valve Assembly

(for use with diester or phosphate ester synthetic lubricants)

1

1

22749-010

"o"ring

2

1

6196-003

disc

2

1

Содержание QR-25 Series

Страница 1: ...available to all personnel who operate and or maintain this product Carefully read this manual before attempting to operate or perform maintenance on this compressor Fill Out Return Warranty Registra...

Страница 2: ...iguration consult factory The Model 340 has a 5 1 4 low pressure bore a 3 high pressure bore a 3 1 2 stroke and can be run at 400 900 r p m Available options included in this manual hooded air filter...

Страница 3: ...oil from your local Authorized Quincy Distribu tor Package Part No Description Barrel 112541D032 55 gal SAE 10W Pail 112541P032 5 gal SAE 10W Gallon 112541G032 1 gal SAE 10W Gallon Case 112541X032 4...

Страница 4: ...1 2 20 unf 3 1 1466 taper key Item Part Number Qty Number Description 1 1 110519 crankshaft assembly includes 1 1 1 110518R crankshaft 1 2 1 40775 bearing cone 1 3 1 2788 bearing cone 1 4 1 110234 ori...

Страница 5: ...3 8 16 unc x 1 00 grade 5 30 ft lbs 9 2 1315 inspection plate gasket 10 1 1249 1 inspection plate 11 1 6849 1 inspection plate 12 12 123478 K12 hex screw 5 16 18 unc x 1 00 grade 5 17ft lbs 13 1 6726...

Страница 6: ...QR 340 Quincy Compressor 50216 105 July 1999 5 3501 Wismann Lane Quincy IL 62305 3116 BEARING CARRIER GROUP 110820 001 with oil filter...

Страница 7: ...6 ft lbs 1 10 2 2719 pipe plug 1 4 npt 1 11 1 5489 adjustment screw 1 12 1 123157 011 o ring 1 16 wide x 44 o d oil pressure adjustment screw 1 13 1 124369 P02 jamnut 9 16 18 unf 1 14 1 1160 spring 1...

Страница 8: ...QR 340 Quincy Compressor 50216 105 July 1999 7 3501 Wismann Lane Quincy IL 62305 3116 BEARING CARRIER GROUP 110820 less oil filter...

Страница 9: ...de 5 6 ft lbs 1 10 2 2719 pipe plug 1 4 npt 1 11 1 5489 adjustment screw 1 12 1 123157 011 o ring 1 16 wide x 44 o d oil pressure adjustment screw 1 13 1 124369 P02 jamnut 9 16 18 unf 1 14 1 1160 spri...

Страница 10: ...50216 105 July 1999 9 3501 Wismann Lane Quincy IL 62305 3116 CONNECTING ROD PISTON GROUP 110749 low pressure 8 1 4 2 1 1 7 1 3 3 4 6 1 2 5 6 6 2 RING GAPS TO BE STAGGERED WHEN ASSEMBLED PIP MARKS INDI...

Страница 11: ...replacement connecting rod bearing 4 1 8642 010 piston low pressure 010 oversize 4 1 8642 020 piston low pressure 020 oversize 1 7595A Piston Ring Set standard includes piston rings oil ring 1 4450 0...

Страница 12: ...105 July 1999 11 3501 Wismann Lane Quincy IL 62305 3116 CONNECTING ROD PISTON GROUP 110750 high pressure 9 1 4 1 1 2 8 4 2 3 5 6 1 2 5 7 7 7 RING GAPS TO BE STAGGERED WHEN ASSEMBLED PIP MARKS INDICAT...

Страница 13: ...serts connecting rod 1 pair 010 undersize 4 1 2008 011 piston high pressure 010 oversize 4 1 2008 021 piston high pressure 020 oversize 1 6452A Piston Ring Set standard includes piston rings oil ring...

Страница 14: ...QR 340 Quincy Compressor 50216 105 July 1999 13 3501 Wismann Lane Quincy IL 62305 3116 CYLINDER HEAD GROUP 110751 001 control version P...

Страница 15: ...er 12 6 123115 05C lockwasher 5 16 13 6 123478 K12 hex screw 5 16 18 unc x 1 00 grade 5 17 ft lbs 14 5 1478 1 flatwasher 15 5 5863 counterbore screw 1 2 13 unc x 4 25 grade 8 65 ft lbs 16 7 90386 N14...

Страница 16: ...QR 340 Quincy Compressor 50216 105 July 1999 15 3501 Wismann Lane Quincy IL 62305 3116 CYLINDER HEAD GROUP 110752 001 control versions L S LS LVD...

Страница 17: ...15 5 5863 counterbore screw 1 2 13 unc x 4 25 grade 8 65 ft lbs 16 7 90386 N14 counterbore screw 1 2 13 unc x 1 25 grade 8 65 ft lbs 17 15 123115 08C lockwasher 1 2 18 8 123478 N15 hex screw 1 2 13 u...

Страница 18: ...pressor 50216 105 July 1999 17 3501 Wismann Lane Quincy IL 62305 3116 HEAD ASSEMBLY 6661P control version P 11 4 2 5 13 7 9 12 10 12 10 9 7 5 3 4 4 3 5 8 6 5 3 1 3 4 3 2 3 3 4 10 12 8 6 5 2 2 2 5 5 2...

Страница 19: ...114545 R15 bolt and nut assembly 3 4 16 unf x 1 50 grade 5 60 ft lbs 11 1 2614 tube fitting 90 male elbow 3 8 tube x 1 4 npt 12 20 7480 hex screw 7 16 14 unc x 1 38 grade 5 50 ft lbs 13 1 2961 100 pre...

Страница 20: ...QR 340 Quincy Compressor 50216 105 July 1999 19 3501 Wismann Lane Quincy IL 62305 3116 HEAD ASSEMBLY 6661UU control versions L S LS LVD...

Страница 21: ...8 2 7532X unloader piston assembly 19 1 6928 plate 20 1 6927 valve cover plate 21 2 3008 holddown screw 60 ft lbs 22 2 1556 gasket valve 23 1 40055 unloader assembly 75 ft lbs N S S order 7483X 23 1 1...

Страница 22: ...25 copper tube 1 4 o d 4 1 1665 1665 tube fitting male branch tee 1 4 tube x 1 4 tube x 1 8 npt 113225 113225 Hydraulic Unloader Repair Kit includes diaphragm stem assembly inlet filter fitting assemb...

Страница 23: ...8 unf x 38 grade 5 1 5 1 2719 2719 pipe plug 1 4 npt hex socket 2 4 ft 110515 025 110515 025 copper tube 1 4 o d 3 1 1665 1665 tube fitting male branch tee 1 4 tube x 1 4 tube x 1 8 npt 4 1 1642 1642...

Страница 24: ...tting straight male connector 3 8 tube x 1 4 npt 2 4 ft 110515 025 110515 025 copper tube 1 4 o d 3 1 1665 1665 tube fitting male branch tee 1 4 tube x 1 4 tube x 1 8 npt 4 1 1642 1642 tube fitting 90...

Страница 25: ...le elbow 1 4 tube x 1 4 npt 1 10 1 2616 2616 tube fitting straight male connector 3 8 tube x 1 4 npt 2 4 ft 110515 025 110515 025 copper tube 1 4 o d 3 1 1665 1665 tube fitting male branch tee 1 4 tub...

Страница 26: ...997 30 70 adjustable unload pressure customer to set see differen tial setting chart 998 71 150 adjustable unload pressure customer to set see differen tial setting chart 999 151 400 adjustable unload...

Страница 27: ...tor Failure to use a pressure switch with the pilot valve locked out could result in unsafe condi tions A pressure switch must be incorporated whenever pilot valve 111423 is employed as part of the co...

Страница 28: ...AULIC UNLOADER ASSEMBLIES Item Part Qty Number Description Hydraulic Unloader Assembly Repair Kit 113225 1 1 diaphragm 2 1 stem assembly includes 2 o rings 3 1 filter assembly includes fitting screens...

Страница 29: ...valve spring 6 1848 gasket valve 2 6682 valve cover gasket 2 1852 gasket valve cover 2 1556 gasket valve 2 1855 diaphragm 1 6680 cylinder to head gasket 1 110377E100 air filter element 2 5702 interco...

Страница 30: ...be used for custom built units Make sure the components you order are rated within the safe operating limits of your system If you are doubtful about which components to order contact you local Quinc...

Страница 31: ...lists are factory trained and will help keep you in business Call for Authorized Quincy Service Quincy Compressor Reciprocating Systems 217 222 7700 Rotary Vacuum Systems 334 937 5900 Nearest Distribu...

Отзывы: