Troubleshooting - Remak DoorMaster C1 Installation And Operating Instructions Manual

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Troubleshooting

The heat-exchanging surface of the exchanger can

be vacuumed or blown through. To remove deeper dirt,
use a long bristle brush. Be careful not to damage the
exchanger fins! If distorted, the exchanger fins can be
repaired using a flat screwdriver or a special comb (3.2
mm).
Cleaning the Air Curtain Interior
and Checking the Internal Parts
This applies for the air curtain interior, water heat ex-
changer leak check, screw and electrical connection
checks.
Remove the inlet grill from the air curtain body (refer

to page 11).
Release and remove the side covers, respectively

laminated side walls (C1 air curtains).
Release and open the lower service panel (D2 air

curtains).
Vacuum the dust from the air curtain interior.

Check and tighten all screw connections.

Check all electrical connections.

Check the grounding.

Check the heat exchanger (if equipped) for leaks,

and if necessary repair.
Reinstall all removed covers.

Check whether all cover plates removed due to

maintenance have been reinstalled and properly fixed.
Install and fix the inlet grill.

Compulsory Operation Screening Checks
Functional and protection tests include:
Device functional status check:
Fan operation test (each output stage)

Electric heater functionality test - the heating coil ba-

ttery KM 3.1 (KM 3.2) contactor switching
Protection test (only E1 and E2 versions)

Electric heater protection blocking function test

Test in simulated fan TK motor failure (by disconne-

cting motor thermo-contact)
Test in exceeded preset operating temperature - by

turning the TH 167 thermostat to the minimum value
and back to the preset value (max.45°C); the KM 3.1
(KM 3.2) contactors must close/open.
Test of the electric heater safety protection (thermo-

stats SM2060 and SM2080) circuits - by opening the
circuit loop (separately 60°C and 80°C)
Troubleshooting
First read these Installation and Operating Instructions
when looking for a solution to any problem. If no so-
lution can be found, contact your dealer for customer
service.
General Check
Check the connection to the power supply (turned off
main switch, circuit breaker, etc.) If the main switch is
turned on and the air curtain does not operate, arrange
inspection by an expert.
24
Expert Check
Expert checking of the device can only be performed by
professionally trained persons who have been informed
of possible dangers arising from the assignments which
they have been authorized to carry out. Proceed accor-
ding to the following steps:
Power Supply Check
If the air curtain does not operate at all, follow the steps
below to locate the failure:
Check the front-end circuit breaker.

If the circuit breaker is OK, check the supply voltage

on the X1 terminals, 230V (N and W versions) or 400 V
(E version). If there is no voltage present in the terminal
box, check the power supply cable and its connection in
the parent distribution board; if voltage is present on the
terminals, check the fuses - refer to the following point.
Check DK-DK terminals. If no door contact is conne-

cted to the air curtain, these terminals must be interco-
nnected.
Check the fuses (C air curtain: FU2; D air curtain

FU1, FU2, FU3) in the air curtain side cover. If any fuse
is blown, replace it. Test the air curtain functionality.
n If the front-end circuit breaker has been tripped, check
the status of the emergency thermostats - the air curtain
could be overheated, or the cables open. The contacts
of the thermostats are normally closed, if the temperatu-
re exceeds 80°C the thermostat contacts will open and
the circuit breaker will be tripped. If this happens, the air
curtain will have to be checked by an expert.
Checking the Functionality of Operation
and Emergency Thermostats inside the Air
Curtain
(only E1 and EE2 versions)
If the fans run but the air curtain does not heat:
Check the settings of the control thermostat for the

low preset temperature (45°C is recommended).
Check the fuses in the air curtain side cover (C air

curtain: FU1, FU3; D air curtain FU4).
Check the operation thermostat TH1.1 (TH2.1) sta-

tus - contacts closed (the contacts open above 60°C).
Protecting thermostats:
Control: TH 167 1x
Operation: SM2060
Emergency: SM2080
Note: The data in parenthesis are valid for C1-
-E1(E2)-100 and C1-E1(E2)-150 air curtains
Checking the Sensors and Controllers
If the supply voltage and fuses are in order while the air
curtain does not heat or work at all, or any control stage
does not work, check the functionality of the controllers.
The following items must be connected to the air cur-
tain:
Speed controller

Heating output controller

Room thermostat

Door contact

Air curtains
2x (1x)
2x (1x)