Remak DoorMaster C1 Installation And Operating Instructions Manual page 23

Maintenance and Screening Checks
Screening Checks and Maintenance
DoorMaster air curtains are made of high quality com-
ponents; therefore, they do not need special maintenan-
ce. It is only recommended to perform regular service
checks (every six months of operation) which include
removal (vacuuming) of dust deposits from the air cur-
tain interior, filter and heat-exchanging surfaces of the
exchangers (blowing or vacuuming), if equipped.
Before performing maintenance, read the safety instruc-
tions on pages 3 and 12, and observe them during the
maintenance work. Before starting any service work,
ensure that the main switch is always turned off and
secured to avoid accidental starting of the device during
service work. Wait until the heat exchangers cools down
(close inlet valves). Removing live electrical parts of the
air curtain is forbidden. It is advisable to hire an authori-
zed contractor to perform regular maintenance.
Maintenance Procedure
Check the inlet grill, and if necessary remove the

dirt.
Check the filter (if equipped) for fouling, replace if

fouled.
Check the heat exchanger (if equipped), and if nece-

ssary remove the dirt.
Check the heat exchanger (if equipped) for leaks,

and if necessary repair.
Check the outlet grill, and if necessary remove the

dirt.
Check the impeller connection to the motor shaft.

Remove the dust deposits from the air curtain interi-

or.
Check all electrical connections.

Check the grounding.

Clean the air curtain external casing.

Regular Checks
Throughout the air curtain service life, the user is ob-
liged to perform regular inspections of the electrical
equipment at intervals in accordance with the applicable
legal regulations.
For a list and frequency of regular inspections, measu-
ring and testing of the air curtain electrical equipment,
refer to table 4.
Figure 34 – Filter insert brace installation

Important: If taking the exchanger out of operation
during the winter season, the water must be com-
pletely drained from the exchanger, and possible
water residuals must be removed, e.g. by blowing
out the exchanger with pressurised air; or the ex-
changer must be filled with a safe antifreeze soluti-
on of water and glycol. The water residuals can fre-
eze in the exchanger and damage the copper pipes.
External Casing Cleaning Procedure
This applies for the inlet grill, output slit and external
casing.
Safely disconnect the device from the power supply.

Remove the dirt and dust deposits using a rag and

detergent solution.
Filter Insert Check (type D)
This applies for the inlet grill and filter insert, if equi-
pped.
It is not necessary to remove the filter insert from the

inlet grill to vacuum it. Be careful when vacuuming the
filter inset, otherwise the filtration textile could be torn.
n If it is highly fouled, remove the filter insert (remove
the bars, see figure #34) and vacuum or wash it in cle-
an water. Remove the damaged filter insert.
Reinstall the bars (see figure #34) - start in the cent-

re, and ensure the textile is properly stretched.
Install and fix the inlet grill.

Cleaning the Inlet Area
This applies for inlet grill and heat-exchanging surfaces
of the exchanger.
Remove the inlet grill from the air curtain body (refer

to page 11).
Remove the dirt and dust deposits using a rag and

detergent solution.
Table 4 – Operation checks
It is recommended to execute all the checks mentioned above

before and after heating season.
Air curtains
23