Follett MC825 Service Manual
MC825 Series Icemaker
with Remote Condensing Unit
Order parts online
www.follettice.com
Installation, Operation and Service Manual
Remote condensing unit
Evaporator unit
Following installation, please forward this manual
to the appropriate operations person.
801 Church Lane • Easton, PA 18040, USA
Toll free (800) 523-9361 • (610) 252-7301
Fax (610) 250-0696 • www.follettice.com
00108647R03
Table of contents
Welcome to Follett Corporation
Specifications
Installation
System layout
Condenser unit installation
Evaporator unit installation
Installing to ice storage and transport bin, top mount
Installing to VU155 or VU300 series dispenser
Refrigeration line installation
System startup
Operation
Cleaning
Weekly exterior evaporator unit care
Recommended semi-annual evaporator unit cleaning
Service
Condenser unit operation
Evaporator unit operation
Technical specifications
Refrigeration system diagram
Evaporator unit wiring diagram
Condensing unit wiring diagram
Water system diagram
Harvest system diagram
Refrigerant charges
Evaporator unit electrical control system operation
Service procedures
Evaporator disassembly
Evaporator reassembly
Gearmotor replacement
Troubleshooting
Replacement parts
3
3
5
5
5
6
6
7
9
9
10
10
10
10
12
12
12
13
13
14
14
15
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Follett Corporation
Equipment Return Policy
Follett equipment may be returned for credit under the following conditions:
1. The equipment is new and unused.
2. A return authorization number has been issued by customer service within 30 days after shipment.
3. Follett receives the equipment at the factory in Easton, PA within 30 days after the issuance of the return authorization number.
4. The equipment must be returned in Follett packaging. If the packaging has been damaged or discarded, Follett will forward, at the customer’s expense,
new packaging.
Note: Return freight charges are the responsibility of the customer. If equipment is returned and is damaged because of improper packaging, Follett
Corporation will not be held responsible.
Credit will be issued when:
The equipment has been inspected by Follett and deemed suitable to be returned to stock.
Note: A 15% restocking charge will be deducted from the credit. If the cost to return the product to stock exceeds 15%, the actual cost will be deducted.
2
Welcome to Follett
Follett icemakers enjoy a well-deserved reputation for excellent performance, long-term reliability and outstanding
after-the-sale support. To ensure that this icemaker delivers that same degree of service, we ask that you take
a moment to review this manual before beginning the installation. Should you have any questions or require
technical help at any point, please call our technical service group, (800) 523-9361 or (610) 252-7301.
Before you begin
After uncrating and removing all packing material, inspect the equipment for concealed shipping damage. If
damage is found, notify the shipper immediately and contact Follett Corporation so that we can help in the filing of
a claim, if necessary.
Important cautions
!
Ice is slippery. Maintain counters and floors around dispenser in a clean and ice-free condition.
Ice is food. Follow recommended cleaning instructions to maintain cleanliness of delivered ice.
Should local codes require a hard-wired connection and/or shielded wiring, eliminate the cord(s)
and plug(s) and follow the appropriate field wiring diagram on the following page.
Always disconnect power before cleaning dispenser.
Failure to remove all sanitizing solution may result in health hazard.
MC825RVR
Icemaker configuration
R = Satellite-fill
T = Top mount
Application
B = Bin
H = Harmony
V = Vision
Condenser type
R = air-cooled, remote condensing unir
N = air-cooled, no condensing unit (for connection to parallel rack system)
Icemaker capacity and refrigerant
825 = 611 lbs (277kg)/day, R404A
Icemaker model series
MC = Maestro Chewblet
Specifications
Electrical
Separate circuit and equipment ground required.
Evaporator unit
Standard electrical – 120V, 60Hz, 1 phase. Max. fuse – 15 amps
Condenser unit
Standard electrical – 220V, 60Hz, 1 phase. Max. fuse – 30 amps
Minimum circuit ampacity – 17.6 amps
Refrigeration
Liquid line – 3/8"
Suction line – 5/8"
Note: A rack system requires a reserve
capacity of 8000 BTU/hr at
2°F (-17°C) evaporator temperature.
Evaporator plumbing
Water – 3/8" push-in water inlet
Drain – 3/4" MPT
Note: Drains should be hard-piped and insulated. Maintain at
least 1/4" per foot (1cm per 31cm run) slope on drain line run.
3
Weight
Evaporator unit
130 lbs (59kg)
Condenser unit
265 lbs (102kg)
Evaporator connections
Ice tranport tube outlet
(remote only)
Low pressure
refrigerant line
(suction line)
High pressure
refrigerant line
(liquid line)
Bin thermostat cord
(remote only)
Ice transport tube outlet
(remote only)
Low pressure refrigerant line
(suction line)
Ice transport tube outlet
(remote only
High pressure
refrigerant line
(liquid line)
Power cord
Water line (3/8" OD tubing)
Drain (3/4" MPT)
Condenser connections
High pressure line
(liquid line)
Power connection
Low pressure line
(suction line)
System details
Evaporator Unit
Front view
24.25"
(616mm)
Top mount
evaporator unit
Side view
18.00"
(458mm)
Service
loop
Remote mount
evaporator unit
Side view
14.00"
(356mm)
Power cord
Water line (3/8" OD tubing)
Drain (3/4" MPT)
Evaporator unit
plug configuration
Service
loop
NEMA 5-15
Condenser unit
Rear view
(432mm)
1.9"
(49mm)
17.00"
22.63"
(575mm)
4"
(102mm)
HEIGHT MAX
(H)
Condenser unit
Top view
WIDTH MAX
4
(W)
30.75"
(781mm)
LENGTH MAX
25.5"
(648mm)
.5" (13mm)
MTG HOLES
(L)
Installation
Icemaker performance is very sensitive to the quality of installation. To ensure proper performance, ease of
service and warranty coverage, it is critical that you follow the requirements detailed in this manual. If you cannot
meet these requirements or have questions, call our technical service group immediately at (800) 523-9361 or
(610) 252-7301.
System layout
(1524mm)
60"
Discharge air
Condenser unit Evaporator
8" (204mm)
8" (204mm)
Clearances
Installation Specifications
Outdoor ambient temperature range: – 20°F – 130°F
(– 29°C – 54.4°C).
Indoor ambient temperature range: 50°F – 90°F
(10°C – 32°C).
Installations with condenser unit above indoor unit
require a suction line S-trap at the bottom of the rise.
Installation with condenser unit elevations above 20 ft (6.1m)
require an additional S-trap at the midpoint of the rise.
Maximum line rise must not exceed 35 ft (10.7m).
Maximum line set length must not exceed 100 feet (30.5m).
Max line drop must not exceed 15 ft (4.6m).
Note: The service loop is not included when calculating the
length, rise or drop of the tubing run.
Water pressure 10 psi – 70 psi.
Water temperature 50°F – 90°F (10°C – 32°C).
24"
(610mm)
Air flow
additional
S - trap
install
required
12" (305mm)
6"
(153mm)
Refrigeration line
elevation specifications
Condenser unit
Maximum line
height
(10.7m)
20 ft+
(6.1m)
Condenser unit
S - trap install
required
3 ft+
(.9m)
6"
(153mm)
35 ft
Install condenser unit
Mount condenser unit
1. Level unit.
2. Securely attach base of unit using holes found in
base plate.
Electrical connection
Refer to wiring schematic located in condenser unit
electrical box.
Note: Electric disconnects required within 10 ft (3m)
for all hard-wired connections.
Note: Install in accordance with NEC and local
electrical codes.
Evaporator unit level
Condenser unit
Maximum line
drop
-15 ft
(-4.6m)
5
Install evaporator unit
Installation overview
The evaporator is designed to be installed in the
following applications:
1. Ice storage and transport bins, top-mount (Fig. 1.1).
2. VU155 or VU300 series ice and beverage dispensers
(Fig. 1.2).
Installation checklist
The following are used for all installation applications:
❒ Locate and level unit
❒ Routing and mounting ice transport tubes
❒ Routing and mounting bin thermostat
❒ Plumbing for water
❒ Plumbing for drain
❒ Routing and connecting refrigerant lines
❒ Start up and testing
Installing to Ice storage and transport bins, top-mount
Mount evaporator unit
1. Verify bin top is level.
Note: Do NOT weld or permanently attach evaporator unit.
Removal may be necessary for service.
2. Position icemaker on bin.
a) If new storage bin and icemaker, position icemaker with
connections facing rear of bin.
b) If using existing bin, place supplied gasket 2.5" (64mm)
from front of bin. Position icemaker with utility connections
facing rear of bin.
Fig. 1
1
2
Fig. 2
Routing and mounting ice transport tubes
1. Remove icemaker top panel and louvered side panel.
2. Remove transport tubes. Route tubes from inside bin, through
gasket and connect to evaporator port (Fig 2).
3. Tighten hose clamp to secure tubes to ports.
Routing and mounting bin thermostat
1. Insert thermostat through clamps on transport tube as shown
(Fig. 3).
Plumb for water and drain
1. Connect drain to 3/4" MPT fitting in rear of unit.
2. Connect potable water supply (plastic or copper tubing) to
3/8" push-in connector in rear of unit.
Fig. 3
Bin
thermostat capillary tube
ICE TRANSPORT TUBE
transport
Ice
transport
tubes
Bin top
Ice
tubes
6
Installing to VU155 or VU300 series ice and beverage dispensers
Mount evaporator unit
Note: Locate unit within 20 ft (6.1m) of dispenser.
1. Level unit.
2. Securely attach base of unit using holes found in base plate.
Note: Do NOT weld or permanently attach evaporator unit.
Removal may be necessary for service.
3. Remove front panel of evaporator unit.
Routing and mounting ice transport tubes (Fig. 4).
Incorrect ice transport tube installation can result in wet ice
and dispensing problems. Follow guidelines below to
ensure correct installation. Call factory for assistance if you
are unable to meet these requirements.
Note: If connecting an MC825 evaporator unit to a manually filled
VU155 or VU300 series dispenser consult dispenser
manual for proper transport tube mounting in dispenser
manual or contact Follett technical service.
1. Push one end of the supplied ice transport tube(s) through
hole(s) provided in side of dispenser.
2. Route tube into ice tube bracket inside dispenser and engage
bracket tabs in holes located in end of ice transport tube(s)
(Fig. 5).
Fig. 4
Correct installation
Incorrect installation
No dips,
No joints,
No bends of
less than
6" (153mm)
Fig. 5 – Ice tube retainer bracket
ice tube
1" (25mm)
ice tube
retaining
bracket
ice tube
7
Fig. 6 – Bin thermostat capillary tube mounting
Front view – VU155 Front view – VU300
ice tube
retaining
bracket
thermostat thermostat
ice tube
tabs in ice tube
retainer bracket
engage holes in ice
tube and hold tube
in place
ice tube
retaining
bracket
ice tube
thermostat
3. Verify bin thermostat capillary tube is mounted correctly (Fig. 6).
4. Run tube from dispenser to icemaker, and cut to length.
Note: Tubes may NOT have dips, may NOT have bends of less than 6" (153mm) radius,
and may NOT have splices/joints.
5. Cut insulation off tube where tube enters grommet.
6. Slide end of tube without insulation through grommet and run to evaporator port.
7. Install a section of insulation on tube from grommet to evaporator port.
8. Slip supplied hose clamp over free end of tube.
9. Pull insulation back from free end of tube.
10. Push tube on evaporator port.
11. Position clamp behind lip on evaporator port and tighten clamp.
12. Connect bin thermostat twist-lock cord to dispenser plug.
Install refrigeration line
Note: The installer of the refrigeration line set must be USA Government-Environmental Protection Agency
(EPA) certified in proper refrigerant handling and servicing procedures.
A qualified person must perform all roof or wall penetration.
Do not form unwanted traps in refrigeration lines. A service loop is not considered an oil trap.
Never coil excess refrigeration tubing.
The compressor oil rapidly absorbs moisture. Minimize the exposure of the refrigeration system by
not releasing the condenser unit or evaporator unit holding charge until all line connections are
finished and the system is ready for evacuation.
To prevent oxidation of the copper, purge line set and condenser unit with dry nitrogen while brazing.
For lines longer than fifty feet, add one additional pound of R404A refrigerant for every 25 feet of line run
up to 100 feet (see refrigeration charge table). Consult factory for line runs beyond 100 feet.
It is recommended that both liquid and suction lines are run and insulated together for the first 15
feet from the condensing unit. This protects the system from sub-cooling loss and/or liquid slugging
the compressor.
8
1. Make line set run from the condenser unit to the evaporator unit in accordance with all specifications
found in the Installation specifications section.
2. Braze all connections. Do not overheat shut off valves on condenser unit or evaporator unit.
3. Pressurize line sets and check for leaks.
4. Bleed off line set.
5. Open the liquid line valve and suction line valves on evaporator unit.
6. Energize liquid line solenoid valve. Valve can be energized by supplying electrical power to evaporator
unit and filling float reservoir and evaporators with water. Do NOT connect power to condensing unit until
evacuation is complete and vacuum has been broken with R404A refrigerant.
7. Open the liquid line valve, then the suction line valve on the condenser unit.
8. Evacuate refrigeration system to 500 microns or less. Verify system holds vacuum for 30 minutes
with the pump off and the system isolated.
9. Add 8 lbs R404A to refrigeration system for up to 50 ft (15.2m) line length. See chart below for line length
longer than 50 ft (15.2m)
R404A icemaker charge specifications
Model Line Run Charge
825 0 – 50 ft (0 – 15.2m) 8 lbs (3.6kg)
50 – 75 ft (15.2 – 22.9m) 9 lbs (4.1kg)
75 – 100 ft (22.9 – 30.5m) 10 lbs (4.5kg)
100 ft+ (30.5m+) Consult factory
10. Insulate entire suction line including shut off valves to prevent condensation.
11. Adjust the condenser unit low pressure control set points to a cut-in of 30psi and a cut-out of 10psi.
Pressure adjustment
1. Turn cut-in adjusting screw (Fig. 7.1)
clockwise until indicator points to 30psig on
cut-in scale. Cut-in MUST be adjusted first.
2. Turn cut-out adjusting screw (Fig. 7.2)
counter clockwise until indicator points to
10psig on cut-out scale.
3. Do NOT adjust high pressure cut-out
adjusting screw (Fig. 7.3). Control is preset
to cut-out at 450psig.
Fig. 7
cut out
scale
2
1
3
cut in
scale
Startup and test
1. Plug evaporator unit in.
2. Turn dispenser power ON if applicable.
3. Turn condenser unit power ON.
4. Check to make sure unit makes ice.
5. Put a piece of ice on bin thermostat and verify that the evaporator unit shuts OFF.
6. Restart icemaker.
9
Operation
Preventive maintenance
Periodic cleaning of Follett’s icemaker system is required to ensure peak performance and delivery of clean,
sanitary ice. The recommended cleaning procedures that follow should be performed at least as frequently as
recommended and more often if environmental conditions dictate.
Cleaning of the icemaker system, in most cases, should be performed by your facility’s maintenance staff or a
Follett authorized service agent. Regardless of who performs the cleaning, it is the operator’s responsibility to
see that this cleaning is performed according to the schedule below. Service problems resulting from lack of
preventive maintenance will not be covered under the Follett warranty.
Weekly exterior evaporator unit care
The exterior may be cleaned with a stainless cleaner such as 3M Stainless Steel Cleaner & Polish or equivalent.
Recommended monthly cleaning of condenser (air-cooled icemaker only)
Solution A – Sanitizing solution:
Prepare 1 gallon (3.8L) of 200ppm 5.25% Sodium Hypochlorite solution
(mix 1 oz household bleach to 2 gallons water) or equivalent. Solution
temperature must be at least 120 F (48.9°C).
Solution B – Ice machine solution:
Following manufacturer's instructions, prepare one 7oz packet of Follett
SafeCLEAN™ Ice Machine Cleaner or equivalent. Solution temperature
must be at least 120 F (48.9°C).
Fig. 8
2
1
1. Remove evaporator unit panels required to gain access to water
reservoir components (Fig. 7) and electrical control box (Fig. 8).
2. Turn compressor switch OFF (Fig. 8.3).
3. Dispense all ice from dispenser.
4. Shut OFF water valve.
5. Drain water from reservoir through float/evaporator drain line
(Fig. 7.1). Reinsert hose into hose clip (Fig. 7.3).
6. Remove water reservoir lid and fill reservoir (Fig. 7.2) with Solution B.
7. Restart icemaker and allow gearmotor to run with the compressor off
for 15 minutes.
8. While waiting 15 minutes, follow step 8a through 8c.
a) Remove ice compression nozzles (Fig. 9.1). Soak in Solution B.
b) Descale drain pans (Fig. 9.2) by grasping firmly an gently bending
up and down. Vacuum residue out.
c) Inspect all drain lines. Clean as necessary with Solution B.
9. Turn bin signal switch (Fig. 8.1) on electrical box of icemaker OFF.
10. Drain Solution B through float/evaporator drain line (Fig. 7.1). Rinse
evaporator by filling reservoir (Fig. 7.2) with potable water and draining
evaporator through float/evaporator drain line (Fig. 7.1) three times.
Reinsert hose to hose clip and plug into end of drain line (Fig. 7.1).
11. Connect ice transport tubes (Fig. 9.3) directly to evaporator outlet
ports (without ice compression nozzle) (Fig. 9.4).
Note: If bin will not be cleaned at this time place a large pan in the
storage area to catch ice or connect a separate ice transport tube to
evaporators and divert ice into a separate container.
3
Fig. 9
2
1
3
10
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