Grant FF Series User manual

Revised January 2012
FF SERIES OF FLAKE ICE MACHINES COMPLETE UNIT
（ ）
SERVICE MANUAL FOR FF 1 - 3.2 AR MODELS
380v – 415v 3 Phase 50Hz
（）
Refrigerant: R404A

Revised January 2012
Table of Contents
IV. Operating Principles
Maintenance & Trouble Shooting
III. Packing, Transportation and Installation
I. Overview ............................................................................................................................. 4
II. Operation Conditions & Performance Parameters
VI. Electrical Information ..................................................................................................... 17
a) Control Panel ............................................................................................................. 17
b) Electrical Wiring Diagram of the Slice Ice Machine .................................................. 18
c) Timer Control Wiring Diagram .................................................................................. 23
VII. PC Board Explained ..................................................................................................... 24
1. Circuit Board Layout ................................................................................................ 24
a) Ice making machine PC Board layout (back) ...................................................... 24
b) ice making external indicator small board layout .............................................. 24
c) Ice full sensor sensitivity small board layout ..................................................... 25
2. Fault Indicator ........................................................................................................... 25
3. Dip Switch .................................................................................................................. 26
V.
1. Water Circulation System ............................................................................................................. 12
2. Ice level Control System ............................................................................................................. 12
3. The Gearbox ................................................................................................................................. 13
4. P.C. Board Controlling System .......................................................................................................
13
1. Packing, Transporting and Storing ..................................................................................................
9 2. Installation ......................................................................................................................................
9 3. Installation Procedures .................................................................................................................
10 5. Operating Instructions ................................................................................................................
11
1. Equipment Maintenance .............................................................................................................. 14
2. Cleaning Procedures .....................................................................................................................
15 3. Trouble Shooting ..........................................................................................................................
16
1. Conditions for Operation of FF Series Scale Ice Machine ...............................................................
4 2. Diagram for Ice Output of Scale Ice Machine
................................................................................. 5 3. Parameters of Scale Ice Machine
.................................................................................................... 6
4. Working Pressure (Ambient temperature : 25℃) ...........................................................................
7
5. Refrigerant Charge .......................................................................................................................... 7
6. Dimensions ..................................................................................................................................... 8

Revised January 2012
a) 8-bit DIP Switch .................................................................................................. 26
b) 4-bit DIP Switch .................................................................................................. 27
4. Electrical Wiring Diagram .......................................................................................... 28
a) Ice machine PC Board wiring diagram ............................................................... 28
b) Ice Machine external indicator (small board) wiring diagram ........................... 29
c) Ice Making sensor wiring diagram ..................................................................... 29
5.Ice Full Sensor sensitivity and DIP switch settings ..................................................... 30
a)Full sensor sensitivity settings ............................................................................ 30
b) Ice Full sensor sensitivity and adjustment method ........................................... 30
VIII. Timer Switch ....................................................................................................... 31
a)Parts Identification .............................................................................................. 31
b)Operating Instructions ........................................................................................ 31
c)Specifications....................................................................................................... 32
IX. Technical Notes ...................................................................................................... 34
X. Service Bulletins .............................................................................................................. 35

Revised January 2012
4
I. Overview
II. Operation Conditions & Performance Parameters
1. Conditions for Operation of FF Scale Ice Machine
Minimum Operating
Conditions
Ambient Temperature 5℃
Water Temperature 5℃
Water Pressure 0.15MPa
Voltage Variation -10%
Maximum Operating
Conditions
46℃
35℃
0.5MPa
+10%
Read this service manual carefully before installation, troubleshooting and operation of this sub-zero ice
machine.
This Service Manual gives an introduction of operation conditions, performance parameters, installation,
troubleshooting and operating procedures of FF series sub-zero ice machines. The ice making system has
a vertical, static evaporator with a rotating auger. The machine is equipped with a solid state PC board,
which controls and monitors the functionality of the ice machine, indicating:
(1) Ice level
(2) Water level
(3) Motor and gearbox operation
(4) Temperature of condenser
(5) Level of refrigerant

Revised January 2012
5
2. Diagram for Ice Output of sub Zero Ice Machine

Revised January 2012
6
Note:
3. Parameters of Sub Zero Ice Machine
FF1AR
FF1AS
FF1.2AR
FF1.2AS
FF1.5AR
FF1.5AS
FF2AR
FF2AS
FF2.5AR
FF2.5AS
FF3.2AR
FF3.2AS
FF3.2WR
(V)
380V/50Hz/3N
(A)
11.5
11.5
15
15
16
16
18.5
18.5
21
21
23
23
23
Air-cooled
unit
Air-cooled
split unit
Air-cooled
unit
Air-cooled
split unit
Air-cooled
unit
Air-cooled
split unit
Air-cooled
unit
Air-cooled
split unit
Air-cooled
unit
Air-cooled
split unit
Air-cooled
unit
Air-cooled
split unit
Water-coole
d unit
6 6
6.5
6.5
8
8
10
10
12
12
12
12
12
(HP) (W)
3400
3400
5100
5100
6700
6700
7500
7500
9800
9800
10500
10500
10500
5×2.5
5×2.5
5×2.5
5×2.5
5×2.5
5×2.5
5×4
5×4
5×4
5×4
5×4
5×4
5×4
(mm2)
42
42
50
50
63
63
85
85
100
100
125
125
125
(l/h)
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
3/4
″
21
21
21
21
21
21
21
21
21
21
21
21
21
315
320
320
325
380
385
470
475
550
560
590
595
570
(kg)
Daily ice output is directly related to the air temperature at the condenser and inlet water temperature. In
order to keep optimum operation performance of FF series sub-zero ice machines maintenance must be
performed on a regular basis as per service manual section V.
Model description: FF×××AR model is a complete unit including refrigeration system ready for connection to
power, water and drainage. The FF×××AS is a split system comprising two components, low side evaporator
with control system and air cooled refrigeration condensing unit. To be installed by qualified refrigeration
technician only. The FF×××WR is a complete system with water cooled condenser, ready to connect to water
supply, power and drainage and condenser water (to be supplied by others).
Model Voltage Current Condensing
Type
Compressor Power Wiring
Size
Water
usage
Inlet
pipe
(outside
thread)
Drain
pipe
(outsid
e
diamet
er)mm
Weight

Revised January 2012
7
Model
Discharge Pressure
Suction Pressure
FF2AR/FF2AS
1800Kpa
200Kpa
5 Refrigerant Charge
Model FF 1 AR FF 1.2 AR
Refrigerant Charge 4800g 5300g
Note:
This may vary if machine parameters change
4. Working Pressure (Ambient temperature 25℃,R404A)
Model FF1AR/FF1AS FF1.2AR/FF1.2AS
Discharge Pressure 1850Kpa 1850Kpa
Suction Pressure 200Kpa 200Kpa
FF2.5AR/FF2.5AS
1800Kpa
200Kpa
FF 1.5 AR
6500g
FF 2 AR
10000g
FF1.5AR/FF1.5AS
1800Kpa
200Kpa
FF3.2AR/FF3.2AS
1650Kpa
200Kpa
FF 2.5
AR
11500g
FF3.2W
R
1550Kpa
200Kpa
FF 3.2
AR
15000g

Revised January 2012
8
6. Dimensions (See figure 1)
Model
FF1AR
FF1AS(Split unit)
FF1.2AR
FF1.2AS(Split unit)
FF1.5AR
FF1.5AS(Split unit)
FF2AR
FF2AS(Split unit)
FF2.5AR
FF2.5AS(Split unit)
FF3.2AR
FF3.2AS(Split unit)
FF3.2WR(Water-cooled unit)
W(mm)
1320
1320
1320
1320
1320
1320
1620
1620
1620
1620
1620
1620
1620
D(mm)
1050
1050
1050
1050
1050
1050
1050
1050
1050
1050
1050
1050
1050
H(mm)
870
870
890
890
1050
1050
1150
1150
1250
1250
1500
1250
1250
------
1100
------
1200
------
1200
------
1250
------
1400
------
1500
------
×475×835
×475×630
×475×630
×475×630
×475×835
×475×935
condenser size for split unit

Revised January 2012
9
E.
1.
B
.
C
.
2.
A.
A.
B.
C.
D.
Packing,Transportation and Storing The ice machine is packed in plywood.
Beware of collision, vibration, tilting, inversion, etc. in transportation and storage. Ice machine should
be kept below 40C, dry, and well-ventilated
Before you begin:
Check your paperwork to determine the model received matches your order.
After uncrating and removing all packing material, inspect equipment for any shipping damage.
Check whether all connections (water system, refrigerant system, etc.), electrical connections (wires,
PC board, etc.) and mechanical system are in good condition.
Installation (See figure 2)
Electrical connections must comply with local standards and requirements on the rating plate of the
machine.
An isolation switch must be installed
Constant water supply (Pressure between 0.15 to 0.5 MPa) and stop cock shall be supplied within 1
metre of the ice machine. Suitable drainage point shall be within 1 metre of ice machine. Two
separate water drainage lines shall be required for draining the ice machine and the ice storage bin.
The ice machine shall not be placed (1) without suitable ventilation; (2) next to heat sources; or (3)
outdoors.
To ensure ice quality a water filter should be installed in icemaker inlet water line.
Packing/ Transportation/ Storing and Installation

Revised January 2012
10
3.Installation Procedures
(1) Place the ice machine on appropriate ice storage bin and fix. See figure 2.
(2) Ensure machine is level
(3) Connect water supply with a hose.
(4) Connect the drains with sufficient fall.
(5) Open the water supply stop cock.
(6) Connect power to approved outlet.
(7) Use a qualified service technician for installation.
(8) See figure 3 for installation of split unit.(See figure 3)
Figure 2