MASTER Q Q-DRY11 User manual

[e-mail] 1300 696 199 masterq.com.au
!
!
!
MASTERQ
Refrigerant Air Dryers
Q-DRY11, Q-DRY15, Q-DRY22, Q-DRY32,
Q-DRY45, Q-DRY57, Q-DRY72, Q-DRY84,
Q-DRY107, Q-DRY138, Q-DRY171, Q-DRY200
!
!
!
!
!
!
!
!
!
!
!
!
Instruction booklet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
!
!

Refrigerant compressed air dryers
Q-DRY11, Q-DRY15, Q-DRY22, Q-DRY32,
Q-DRY45, Q-DRY57, Q-DRY72, Q-DRY84,
Q-DRY107, Q-DRY138, Q-DRY171, Q-DRY200
Instruction booklet
Original instructions
Copyright notice
Any unauthorised use or copying of the contents or any part thereof is prohibited.
This applies in particular to trademarks, model denominations, part numbers and
drawings.
NO. 1639 6909 96/2018-03 Printed

CONTENTS
1 GENERAL SAFETY STANDARD ............................................................................. 1
1.1 DESCRIPTION OF DANGER SIGNALS ................................................................... 1
2 GENERAL DESCRIPTION ........................................................................................ 2
2.1 GENERAL VIEW ........................................................................................................ 2
2.2 AIR SYSTEM ............................................................................................................. 4
2.3 REFRIGERATION SYSTEM ...................................................................................... 5
2.4 AUTOMATIC REGULATION SYSTEM ...................................................................... 6
2.5 CONDENSATE DRAIN SYSTEM .............................................................................. 7
3 INSTALLATION ......................................................................................................... 9
3.1 DRYER ROOM .......................................................................................................... 9
3.2 EXAMPLES OF INSTALLATION .............................................................................. 10
4 OPERATING INSTRUCTIONS ................................................................................ 11
4.1 WARNING ................................................................................................................ 12
4.2 CONTROL PANEL ................................................................................................... 12
4.3 PDP CONTROLLER ................................................................................................ 13
4.4 STARTING ............................................................................................................... 15
4.5 DURING OPERATION ............................................................................................. 15
4.6 STOPPING ............................................................................................................... 16
5 DIMENSIONS AND TECHNICAL DATA ...................................................................... 17
5.1 CONNECTIONS ...................................................................................................... 17
5.2 DIMENSIONS .......................................................................................................... 18
5.3 TECHNICAL DATA ................................................................................................... 18
5.4 REFERENCE CONDITIONS ................................................................................... 19
5.5 LIMITATIONS ........................................................................................................... 19
6 TRANSPORT AND HANDLING .................................................................................. 20
7 ROUTINE MAINTENANCE ......................................................................................... 21
8 TROUBLESHOOTING ................................................................................................. 22

ADDRESSES OF ASSISTANCE CENTERS
In the event of breakdown or malfunction of the machine, switch it off and do not
tamper with it.
If repairs are needed, contact a technical assistance center approved by the
manufacturer and insist on the use of original spare parts.
Failure to comply with the above may endanger the safety of the machine.
Keep this manual with care for future consultation; the use and maintenance manual
is an integral part of the machine.
Read this manual carefully before carrying out any operations on the compressor
unit. The installation of the compressor unit and all operations involving it must be
performed in conformity with the regulations in force concerning electric plants and
personal safety.

1
1 GENERAL SAFETY STANDARD
BEFORE REMOVING THE PROTECTION DEVICES FOR ANY MAINTENANCE WORK ON
THE MACHINE, DISCONNECT THE ELECTRICAL POWER SUPPLY. MAKE SURE THAT
THERE IS NO INTERNAL RESIDUAL PRESSURE.
ALL WORK ON THIS MACHINE MUST BE CARRIED OUT BY AUTHORISED &
PROFESSIONALLY SKILLED PERSONNEL.
Note: Any tampering with the machine or alterations not approved beforehand by the
manufacturer relieve the latter of responsibility for any damage resulting from the above
actions.
1.1 DESCRIPTION OF DANGER SIGNALS

2
2 GENERAL DESCRIPTION
2.1 GENERAL VIEW
4
5
6
7
Rear View
Front View
Inside View
Inside View
17
15
9
10
11
12
13
14
16

3
Reference
Name
1
Air outlet
2
Air Inlet
3
Data plate
4
Electrical cable outlet
5
Condensate drain outlet
6
Dew point indicator
7
Dryer on/off switch
8
High pressure switch
9
Heat exchanger
10
Electrical timer drain
11
Condenser
12
Capacity
13
Motor fan
14
Refrigerant filter
15
Capillary
16
Hot gas by-pass valve
17
Refrigerant compressor
Introduction
The dryer is a chilling machine with direct expansion and dry evaporator. The air to be dried
is sent to the heat exchanger in which the water vapor present is condensed: the
condensate gathers in the separator and is discharged outside through a steam trap.

4
2.2 AIR SYSTEM
Reference
Name
4
Evaporator
5
Condensate separator
6
Condensate drain
10
Heat exchanger
11
Dew point indicator
Description
Compressed air enters heat exchanger (10) and is cooled by the outgoing, cold, dried air.
Water in the incoming air starts to condense. The air then flows through heat
exchanger/evaporator (10 & 4) where the refrigerant evaporates causing the air to be
cooled further to close to the evaporating temperature of the refrigerant. More water in the
air condenses. The cold air then flows through separator (5) where all the condensate is
separated from the air. The condensate is automatically drained in the condensate drain (6).
The cold, dried air flows through heat exchanger (10) where it is warmed up by the incoming
air to approx. 10˚C (18˚F) below the incoming air temperature. Condensation in the air net
cannot occur unless the air is cooled to below the pressure dew point indicated by the digital
dew point indicator (11).

5
2.3 REFRIGERATION SYSTEM
Reference
Name
1
Refrigerant compressor
2
Condenser
4
Evaporator
7
Capillary tube
8
filter
9
Liquid separator
12
High pressure switch
13
Hot gas by-pass valve
Description
Compressor (1) delivers hot, high-pressure refrigerant gas which flows through condenser
(2) where most of the refrigerant condenses. The liquid flows through liquid refrigerant
dryer/filter (8) to capillary tube (7). The refrigerant leaves the capillary tube at evaporating
pressure. The refrigerant enters evaporator (4) where it withdraws heat from the
compressed air by further evaporation at constant pressure. The heated refrigerant leaves
the evaporator and flows through the liquid separator (9) back to the compressor (1).

6
2.4 AUTOMATIC REGULATION SYSTEM
Reference
Name
1
Refrigerant compressor
3
Motor fan
9
Liquid separator
12
High pressure switch
13
Hot gas by-pass valve
Description
The condenser pressure must be kept as constant as possible to obtain stable operation. Fan
control switch therefore stops and starts the cooling fan (3). If, under partial or no load, the
evaporator pressure drops below a certain level, the hot gas by-pass valve (9) opens and hot,
high-pressure gas is fed to the evaporator circuit to prevent the evaporator pressure from
dropping any further.